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THVD1510, THVD1512
THVD1550, THVD1551, THVD1552
SLLSEV1C – SEPTEMBER 2017 – REVISED DECEMBER 2018
THVD15xx 5-V RS-485 Transceivers With ±18-kV IEC ESD Protection
1 Features
•
1
•
•
•
•
•
•
•
•
•
•
•
Meets or Exceeds the Requirements of the
TIA/EIA-485A Standard
4.5 V to 5.5 V Supply Voltage
Integrated Bus I/O Protection
– ± 30 kV HBM ESD
– ± 18 kV IEC 61000-4-2 ESD Contact
Discharge
– ± 25 kV IEC 61000-4-2 ESD Air-Gap
Discharge
– ± 4 kV IEC 61000-4-4 Electrical Fast Transient
Extended Operational Common-mode: ± 15 V
Low EMI 500 kbps and 50 Mbps Data Rates
Extended Temperature Range: -40°C to 125°C
Large Receiver Hysteresis for Noise Rejection
Low Power Consumption
– Low Standby Supply Current: < 1 µA
– Current During Operation: < 1 mA
Glitch-Free Power-Up/Down for Hot Plug-in
Capability
Open, Short, and Idle Bus Failsafe
1/8 Unit Load Options (Up to 256 Bus Nodes)
Small-Size VSSOP Packages Save Board Space
or SOIC for Drop-in Compatibility
2 Applications
•
•
•
•
•
•
•
•
Motor Drives
Factory Automation and Control
Grid Infrastructure
Building Automation
HVAC Systems
Video Surveillance
Process Analytics
Telecom Infrastructure
Each of these devices operates from a single 5-V
supply. The devices in this family feature an extended
common-mode voltage range which makes them
suitable for multi-point applications over long cable
runs.
THVD15xx family of devices is available in small
VSSOP packages for space-constrained applications.
These devices are characterized over ambient freeair temperatures from –40°C to 125°C.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
THVD1510
THVD1550
VSSOP (8)
3.00 mm × 3.00 mm
SOIC (8)
4.90 mm × 3.91 mm
THVD1551
VSSOP (8)
3.00 mm × 3.00 mm
THVD1512
VSSOP (10)
3.00 mm × 3.00 mm
VSSOP (10)
3.00 mm × 3.00 mm
SOIC (14)
8.65 mm × 3.91 mm
THVD1552
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
THVD1510 and THVD1550 Simplified Schematic
R
RE
DE
D
1
2
7
3
6
B
A
4
THVD1551 Simplified Schematic
R
D
2
8
A
7
B
3
6
Z
5
Y
THVD1512 and THVD1552 Simplified Schematic
R
RE
DE
D
2 (1)
3 (2)
(9 ) 12
A
(8 ) 11
B
4 (3)
5 (4)
(7 ) 10
Z
(6) 9
Y
3 Description
THVD15xx is a family of noise-immune RS-485/RS422 transceivers designed to operate in rugged
industrial environments. The bus pins of these
devices are robust to high levels of IEC electrical fast
transients (EFT) and IEC electrostatic discharge
(ESD) events, eliminating the need for additional
system-level protection components.
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
THVD1510, THVD1512
THVD1550, THVD1551, THVD1552
SLLSEV1C – SEPTEMBER 2017 – REVISED DECEMBER 2018
www.ti.com
Table of Contents
1
2
3
4
5
6
7
Features ..................................................................
Applications ...........................................................
Description .............................................................
Revision History.....................................................
Device Comparison Table.....................................
Pin Configuration and Functions .........................
Specifications.........................................................
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
8
9
1
1
1
2
3
3
6
Absolute Maximum Ratings ...................................... 6
ESD Ratings ............................................................ 6
Recommended Operating Conditions....................... 7
Thermal Information .................................................. 7
Power Dissipation ..................................................... 7
Electrical Characteristics........................................... 8
Switching Characteristics .......................................... 9
Switching Characteristics .......................................... 9
Typical Characteristics ............................................ 10
Parameter Measurement Information ................ 11
Detailed Description ............................................ 14
9.1 Overview ................................................................. 14
9.2 Functional Block Diagrams ..................................... 14
9.3 Feature Description................................................. 14
9.4 Device Functional Modes........................................ 15
10 Application and Implementation........................ 18
10.1 Application Information...................................... 18
10.2 Typical Application ............................................... 18
11 Power Supply Recommendations ..................... 24
12 Layout................................................................... 25
12.1 Layout Guidelines ................................................. 25
12.2 Layout Example .................................................... 25
13 Device and Documentation Support ................. 26
13.1
13.2
13.3
13.4
13.5
13.6
13.7
13.8
Device Support......................................................
Third-Party Products Disclaimer ...........................
Related Links ........................................................
Receiving Notification of Documentation Updates
Community Resources..........................................
Trademarks ...........................................................
Electrostatic Discharge Caution ............................
Glossary ................................................................
26
26
26
26
26
26
26
26
14 Mechanical, Packaging, and Orderable
Information ........................................................... 27
4 Revision History
Changes from Revision B (July 2018) to Revision C
•
Page
Changed the Description of pins 13 and 14 in the Pin Functions table for THVD1512, THVD1552 D package ................... 5
Changes from Revision A (January 2018) to Revision B
•
Page
Added TSD to the Electrical Characteristics table ................................................................................................................... 8
Changes from Original (September 2017) to Revision A
Page
•
Changed the Machine model (MM) value From: ±400 To: ±200 in the ESD Ratings............................................................ 6
•
Changed the VOH MIN value From: 2.4 V To: 4 V in the Electrical Characteristics table ..................................................... 8
2
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THVD1510, THVD1512
THVD1550, THVD1551, THVD1552
www.ti.com
SLLSEV1C – SEPTEMBER 2017 – REVISED DECEMBER 2018
5 Device Comparison Table
PART NUMBER
DUPLEX
ENABLES
THVD1512
Full
DE, RE
THVD1510
Half
DE, RE
THVD1552
Full
DE, RE
THVD1551
Full
None
THVD1550
Half
DE, RE
SIGNALING RATE
NODES
up to 500 kbps
256
up to 50 Mbps
196
6 Pin Configuration and Functions
THVD1510, THVD1550 Devices
8-Pin D Package (SOIC)
Top View
THVD1510, THVD1550 Devices
8-Pin DGK Package (VSSOP)
Top View
R
1
8
VCC
/RE
2
7
B
DE
3
6
A
D
4
5
GND
Not to scale
R
1
8
VCC
/RE
2
7
B
DE
3
6
A
D
4
5
GND
Not to scale
Pin Functions
PIN
I/O
DESCRIPTION
NAME
D
DGK
A
6
6
Bus input/output
Bus I/O port, A (complementary to B)
B
7
7
Bus input/output
Bus I/O port, B (complementary to A)
D
4
4
Digital input
Driver data input
DE
3
3
Digital input
Driver enable, active high (2 MΩ internal pull-down)
GND
5
5
Ground
R
1
1
Digital output
VCC
8
8
Power
RE
2
2
Digital input
Copyright © 2017–2018, Texas Instruments Incorporated
Device ground
Receive data output
5-V supply
Receiver enable, active low (2 MΩ internal pull-up)
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3
THVD1510, THVD1512
THVD1550, THVD1551, THVD1552
SLLSEV1C – SEPTEMBER 2017 – REVISED DECEMBER 2018
www.ti.com
THVD1551 Device
8-Pin DGK Package (VSSOP)
Top View
VCC
1
8
A
R
2
7
B
D
3
6
Z
GND
4
5
Y
Not to scale
Pin Functions
PIN
NAME
I/O
DGK
DESCRIPTION
A
8
Bus input
Bus input, A (complementary to B)
B
7
Bus input
Bus input, B (complementary to A)
D
3
Digital input
GND
4
Ground
R
2
Digital output
VCC
1
Power
Y
5
Bus output
Bus output, Y (complementary to Z)
Z
6
Bus output
Bus output, Z (complementary to Y)
4
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Driver data input
Device ground
Receive data output
5-V supply
Copyright © 2017–2018, Texas Instruments Incorporated
Product Folder Links: THVD1510 THVD1512 THVD1550 THVD1551 THVD1552
THVD1510, THVD1512
THVD1550, THVD1551, THVD1552
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SLLSEV1C – SEPTEMBER 2017 – REVISED DECEMBER 2018
THVD1552 Device
14-Pin D Package (SOIC)
Top View
THVD1512, THVD1552 Devices
10-Pin DGS Package (VSSOP)
Top View
NC
1
14
VCC
R
2
13
VCC
/RE
3
12
A
DE
4
11
B
D
5
10
Z
GND
6
9
Y
GND
7
8
NC
R
1
10
VCC
RE
2
9
A
DE
3
8
B
D
4
7
Z
GND
5
6
Y
Not to scale
Not to scale
Pin Functions
PIN
NAME
D
DGS
A
12
9
B
11
D
5
DE
I/O
DESCRIPTION
Bus input
Bus input, A (complementary to B)
8
Bus input
Bus input, B (complementary to A)
4
Digital input
Driver data input
4
3
Digital input
Driver enable, active high (2 MΩ internal pull-down)
6, 7 (1)
5
Ground
1, 8
—
—
2
1
Digital output
—
10
Power
5-V supply.
13, 14
—
Power
5-V supply. These pins are not connected together internally, so power must
be applied to both.
Y
9
6
Bus output
Bus output, Y (Complementary to Z)
Z
10
7
Bus output
Bus output, Z (Complementary to Y)
RE
3
2
Digital input
Receiver enable, active low (2 MΩ internal pull-up)
GND
NC
R
VCC
(1)
Device ground
Internally not connected
Receive data output
These pins are internally connected
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SLLSEV1C – SEPTEMBER 2017 – REVISED DECEMBER 2018
www.ti.com
7 Specifications
7.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1)
MIN
MAX
UNIT
Supply voltage
VCC
–0.5
7
V
Bus voltage
Range at any bus pin (A, B, Y, or Z) as
differential or common-mode with respect to
GND
–18
18
V
Input voltage
Range at any logic pin (D, DE, or RE)
–0.3
5.7
V
Receiver output current
IO
–24
24
mA
–65
150
°C
Storage temperature, Tstg
(1)
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings
only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended
Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
7.2 ESD Ratings
VALUE
V(ESD)
Electrostatic discharge
Contact discharge, per IEC 61000-4-2
Bus terminals and GND
±18,000
Air-gap discharge, per IEC 61000-4-2
Bus terminals and GND
±25,000
Bus terminals and GND
±30,000
All pins except Bus
terminals and GND
±8,000
Human-body model (HBM), per
ANSI/ESDA/JEDEC JS-001 (1)
Charged-device model (CDM), per JEDEC specification JESD22C101 (2)
Machine model (MM), per JEDEC JESD22-A115-A
V(EFT)
(1)
(2)
6
Electrical fast transient
Per IEC 61000-4-4
Bus terminals
UNIT
V
±1,500
±200
±4,000
V
JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.
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SLLSEV1C – SEPTEMBER 2017 – REVISED DECEMBER 2018
7.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
MIN
NOM
MAX
UNIT
VCC
Supply voltage
4.5
5.5
V
VI
Input voltage at any bus terminal (1)
-15
15
V
VIH
High-level input voltage (driver, driver enable, and receiver enable
inputs)
2
VCC
V
VIL
Low-level input voltage (driver, driver enable, and receiver enable
inputs)
0
0.8
V
VID
Differential input voltage
-15
15
V
IO
Output current, driver
-60
60
mA
IOR
Output current, receiver
-8
8
mA
RL
Differential load resistance
54
Ω
THVD1510, THVD1512
500
kbps
1/tUI
Signaling rate
50
Mbps
TA
Operating ambient temperature
-40
125
°C
TJ
Junction temperature
-40
150
°C
(1)
THVD1550, THVD1551, THVD1552
The algebraic convention, in which the least positive (most negative) limit is designated as minimum is used in this data sheet.
7.4 Thermal Information
THERMAL METRIC
(1)
THVD1510
THVD1550
THVD1552
THVD1510
THVD1550
THVD1551
THVD1512
THVD1552
D (SOIC)
D (SOIC)
DGK (VSSOP)
DGS (VSSOP)
UNIT
8 PINS
14 PINS
8 PINS
10 PINS
RθJA
Junction-to-ambient thermal resistance
112.4
88.0
151.7
151.4
°C/W
RθJC(top)
Junction-to-case (top) thermal resistance
62.7
45.4
62.8
59.3
°C/W
RθJB
Junction-to-board thermal resistance
62.0
44.1
81.3
81.6
°C/W
ψJT
Junction-to-top characterization parameter
15.4
11.3
7.8
6.5
°C/W
ψJB
Junction-to-board characterization parameter
61.3
43.7
79.8
79.9
°C/W
RθJC(bot)
Junction-to-case (bottom) thermal resistance
N/A
N/A
N/A
N/A
°C/W
(1)
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report.
7.5 Power Dissipation
PARAMETER
PD
Driver and receiver enabled,
VCC = 5.5 V, TA = 125 °C,
50% duty cycle square wave at
signaling rate
Copyright © 2017–2018, Texas Instruments Incorporated
TEST CONDITIONS
VALUE
Unterminated
RL = 300 Ω, CL = 50 pF (driver)
THVD151x 500 kbps
210
THVD155x 50 Mbps
350
RS-422 load
RL = 100 Ω, CL = 50 pF (driver)
THVD151x 500 kbps
220
THVD155x 50 Mbps
330
RS-485 load
RL = 54 Ω, CL = 50 pF (driver)
THVD151x 500 kbps
250
THVD155x 50 Mbps
340
UNIT
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mW
mW
mW
7
THVD1510, THVD1512
THVD1550, THVD1551, THVD1552
SLLSEV1C – SEPTEMBER 2017 – REVISED DECEMBER 2018
www.ti.com
7.6 Electrical Characteristics
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
1.5
2.7
V
2
3
V
1.5
2.7
V
Driver
RL = 60 Ω, -15 V ≤ Vtest ≤ 15 V, (See Figure 11)
Driver differential output
voltage magnitude
|VOD|
RL = 100 Ω (See Figure 12)
RL = 54 Ω (See Figure 12)
Δ|VOD|
Change in differential output
voltage
VOC
Common-mode output
voltage
ΔVOC(SS)
Change in steady-state
common-mode output
voltage
IOS
Short-circuit output current
–200
1
RL = 54 Ω (See Figure 12)
DE = VCC, -15 V ≤ VO ≤ 15V
200
VCC/2
3
mV
V
–200
200
mV
–250
250
mA
Receiver
VI = 12 V
THVD151x
II
Bus input current
DE = 0 V, VCC = 0 V or 5.5 V
VI = 15 V
VI = -7 V
-100
VI = -15 V
-215
VI = 12 V
THVD155x
VI = 15 V
75
125
95
156
-40
-85
115
160
150
200
μA
VI = -7 V
-130
-75
VI = -15 V
-280
-180
See (1)
–85
–20
mV
–200
–135
See (1)
mV
Receiver
VTH+
Positive-going input
threshold voltage
VTH-
Negative-going input
threshold voltage
VHYS
Input hysteresis
VTH+
Positive-going input
threshold voltage
VTH-
Negative-going input
threshold voltage
VHYS
Input hysteresis
VOH
Output high voltage
IOH = -8 mA
VOL
Output low voltage
IOL = 8 mA
IOZ
Output high-impedance
current
VO = 0 V or VCC, RE = VCC
-1
Input current (D, DE, RE)
4.5 V ≤ VCC ≤ 5.5 V, 0 V ≤ VIN ≤ VCC
–5
Over common-mode range of - 7 V to +12 V
50
–85
–20
mV
–220
–135
See (1)
mV
4
VCC - 0.3
See
Over common-mode range of ± 15 V
mV
(1)
50
0.2
mV
V
0.4
V
1
µA
0
5
µA
Logic
IIN
Supply
ICC
TSD
(1)
8
Driver and receiver enabled
RE = 0 V, DE = VCC,
No load
700
1000
µA
Driver enabled, receiver disabled
RE = VCC, DE = VCC,
No load
400
620
µA
Driver disabled, receiver enabled
RE = 0 V, DE = 0 V,
No load
400
630
µA
Driver and receiver disabled
RE = VCC, DE = 0 V,
D = open, No load
0.1
1
µA
Supply current (quiescent)
Thermal shutdown temperature
170
°C
Under any specific conditions, VTH+ is specified to be at least VHYS higher than VTH–.
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SLLSEV1C – SEPTEMBER 2017 – REVISED DECEMBER 2018
7.7 Switching Characteristics
500-kbps devices (THVD1510, THVD1512) over recommended operating conditions
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
300
400
600
ns
350
500
ns
15
ns
110
200
ns
100
500
ns
2
4
µs
15
25
ns
50
60
ns
10
ns
30
40
ns
Driver
tr, tf
Differential output rise/fall time
tPHL, tPLH
Propagation delay
tSK(P)
Pulse skew, |tPHL – tPLH|
tPHZ, tPLZ
Disable time (THVD1510,
THVD1512)
tPZH, tPZL
RL = 54 Ω, CL = 50 pF
Enable time (THVD1510,
THVD1512)
See Figure 13
See Figure 14 and
Figure 15
RE = 0 V
RE = VCC
Receiver
tr, tf
Differential output rise/fall time
tPHL, tPLH
Propagation delay
tSK(P)
Pulse skew, |tPHL – tPLH|
tPHZ, tPLZ
Disable time (THVD1510,
THVD1512)
tPZH(1),
tPZL(1),
tPZH(2),
tPZL(2)
Enable time (THVD1510,
THVD1512)
CL = 15 pF
See Figure 16
DE = VCC
See Figure 17
60
100
ns
DE = 0 V
See Figure 18
3
8
μs
TYP
MAX
7.8 Switching Characteristics
50-Mbps devices (THVD1550, THVD1551, THVD1552) over recommended operating conditions
PARAMETER
TEST CONDITIONS
MIN
UNIT
Driver
tr, tf
Differential output rise/fall time
tPHL, tPLH
Propagation delay
tSK(P)
Pulse skew, |tPHL – tPLH|
tPHZ, tPLZ
Disable time (THVD1550,
THVD1552)
tPZH, tPZL
RL = 54 Ω, CL = 50 pF
Enable time (THVD1550,
THVD1552)
RE = 0 V
See Figure 13
1
2
6
ns
5
10
16
ns
3.5
ns
10
22
ns
10
22
ns
2
4
μs
3
6
ns
30
45
ns
2
ns
8
18
ns
See Figure 14 and
Figure 15
RE = VCC
Receiver
tr, tf
Differential output rise/fall time
tPHL, tPLH
Propagation delay
tSK(P)
Pulse skew, |tPHL – tPLH|
tPHZ, tPLZ
Disable time (THVD1550,
THVD1552)
tPZH(1),
tPZL(1),
tPZH(2),
tPZL(2)
Enable time (THVD1550,
THVD1552)
1
CL = 15 pF
See Figure 16
DE = VCC
See Figure 17
55
90
ns
DE = 0 V
See Figure 18
3
8
μs
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7.9 Typical Characteristics
VOL
VOH
4.5
VO - Driver Output Voltage (V)
VO - Driver Differential Output Voltage (V)
5
4
3.5
3
2.5
2
1.5
1
0.5
0
10
20
30 40 50 60 70 80
IO - Driver Output Current (mA)
VCC = 5 V
90
3
2.5
2
1.5
1
0.5
0
10
20
D001
DE = VCC
D=0V
30 40 50 60 70 80
IO - Driver Output Current (mA)
VCC = 5 V
Figure 1. Driver Output Voltage vs Driver Output Current
90
100 110
D002
DE = VCC
D=0V
Figure 2. Driver Differential Output Voltage vs Driver Output
460
V0 - Driver Rise and Fall Time (ns)
IO - Driver Output Current (mA)
3.5
100 110
60
50
40
30
20
10
0
0
0.5
1
1.5
2
2.5 3 3.5 4 4.5
VCC - Supply Voltage (V)
TA = 25°C
DE = VCC
5
5.5
440
430
420
410
400
390
-20
0
D003
RL = 54 Ω
20
40
60
Temperature (qC)
80
100
120
D004
D = VCC
Figure 4. THVD1510 Driver Rise or Fall Time vs Temperature
3
VO - Driver Rise and Fall Time (ns)
395
390
385
380
375
370
365
360
355
350
345
340
335
330
-40
450
380
-40
6
Figure 3. Driver Output Current vs Supply Voltage
VO - Driver Propagation Delay (ns)
4
0
0
-20
0
20
40
60
80
Temperature (qC)
100
120
140
D005
Figure 5. THVD1510 Driver Propagation Delay vs
Temperature
10
4.5
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2.5
2
1.5
1
0.5
0
-40
-20
0
20
40
60
Temperature (qC)
80
100
120
D006
Figure 6. THVD1550 Driver Rise or Fall Time vs Temperature
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14
80
12
70
ICC - Supply Current (mA)
VO - Driver Propagation Delay (ns)
Typical Characteristics (continued)
10
8
6
4
60
50
40
30
20
2
10
0
-40
-20
0
20
40
60
Temperature (qC)
80
100
0
50
120
100
150
D007
200 250 300 350
Signaling Rate (Kbps)
400
450
500
D008
RL = 54 Ω
Figure 7. THVD1550 Driver Propagation Delay vs
Temperature
Figure 8. THVD1510 Supply Current vs Signal Rate
7
90
VIT- ( 7 V) VIT+ ( 7 V)
VIT- (0 V) VIT+ (0 V)
VIT- (12 V) VIT+ (12 V)
6
70
Receiver Output (V)
ICC - Supply Current (mA)
80
60
50
40
30
5
4
3
2
20
1
10
0
0
5
10
15
20
25
30
35
Signaling Rate (Mbps)
40
45
0
-170 -160 -150 -140 -130 -120 -110 -100 -90
50
-80
-70
-60
Differential Input Voltage (mV)
D009
-50
D010
RL = 54 Ω
Figure 10. Receiver Output vs Input
Figure 9. THVD1550 Supply Current vs Signal Rate
8 Parameter Measurement Information
375 Ÿ
Vcc
DE
A
0V or Vcc
D
VOD
Vtest
RL
B
375 Ÿ
Figure 11. Measurement of Driver Differential Output Voltage With Common-Mode Load
A
0V or Vcc
D
A
RL/2
B
VOD
B
RL/2
VA
CL
VB
VOC(PP)
VOC
ûVOC(SS)
VOC
Figure 12. Measurement of Driver Differential and Common-Mode Output With RS-485 Load
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Parameter Measurement Information (continued)
Vcc
Vcc
DE
A
D
Input
Generator
VI
50%
VI
VOD
50 Ÿ
0V
tPHL
tPLH
RL=
54 Ÿ
CL= 50 pF
VOD
~2 V
90%
50%
10%
B
tr
~ ±2V
tf
Figure 13. Measurement of Driver Differential Output Rise and Fall Times and Propagation Delays
A
S1
D
Vcc
VO
50%
VI
B
DE
Input
Generator
VI
RL =
110 Ÿ
CL =
50 pF
50 Ÿ
0V
tPZH
90%
VOH
50%
VO
~
~ 0V
tPHZ
Figure 14. Measurement of Driver Enable and Disable Times With Active High Output and Pull-Down
Load
Vcc
Vcc
RL= 110 Ÿ
A
0V
tPZL
VO
DE
Input
Generator
VI
S1
B
D
50%
tPLZ
§ Vcc
VO
CL=
50 pF
10%
50 %
VI
VOL
50 Ÿ
Figure 15. Measurement of Driver Enable and Disable Times With Active Low Output and Pull-up Load
3V
A
Input
Generator
R VO
VI
50 Ÿ
1.5V
0V
50 %
VI
B
0V
tPLH
tPHL
VOH
90%
CL=15 pF
50%
RE
VOD
10 %
tr
VOL
tf
Figure 16. Measurement of Receiver Output Rise and Fall Times and Propagation Delays
Vcc
Vcc
Vcc
VI
50 %
DE
0V or Vcc
0V
A
D
R
B
VO
1 kŸ
tPZH(1)
tPHZ
S1
CL=15 pF
VO
90 %
50 %
tPZL(1)
VI
50 Ÿ
D at Vcc
S1 to GND
§ 0V
RE
Input
Generator
VOH
VO
tPLZ
50 %
VCC D at 0V
S1 to Vcc
10 %
VOL
Figure 17. Measurement of Receiver Enable/Disable Times With Driver Enabled
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Parameter Measurement Information (continued)
Vcc
Vcc
VI
50%
0V
A
V or 1.5V
R
1.5 V or 0V
B
RE
VO
1 NŸ
tPZH(2)
S1
CL=15 pF
VOH
50%
VO
§ 0V
A at 1.5 V
B at 0 V
S1 to GND
tPZL(2)
Input
Generator
VI
VCC
50 Ÿ
VO
50%
VOL
A at 0V
B at 1.5V
S1 to VCC
Figure 18. Measurement of Receiver Enable Times With Driver Disabled
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9 Detailed Description
9.1 Overview
THVD1510 and THVD1550 are low-power, half-duplex RS-485 transceivers available in two speed grades
suitable for data transmission up to 500 kbps and 50 Mbps respectively.
THVD1551 is fully enabled with no external enabling pins. THVD1512 and THVD1552 have active-high driver
enables and active-low receiver enables. A standby current of less than 1 µA can be achieved by disabling both
driver and receiver.
9.2 Functional Block Diagrams
VCC
R
RE
A
DE
B
D
GND
Figure 19. THVD1510 and THVD1550
VCC
A
R
R
B
VCC
D
Z
D
Y
GND
Figure 20. THVD1551
VCC
A
R
R
B
RE
DE
D
Z
D
Y
GND
Figure 21. THVD1512 and THVD1552
9.3 Feature Description
Internal ESD protection circuits of the THVD15xx protect the transceivers against electrostatic discharges (ESD)
according to IEC 61000-4-2 of up to ±18 kV and against electrical fast transients (EFT) according to IEC 610004-4 of up to ±4 kV. With careful system design, one could achieve ±4 kV EFT Criterion A (no data loss when
transient noise is present).
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Feature Description (continued)
The THVD15xx device family provides internal biasing of the receiver input thresholds in combination with large
input-threshold hysteresis. The receiver output remains logic high under a bus-idle or bus-short conditions
without the need for external failsafe biasing resistors. Device operation is specified over a wide ambient
temperature range from –40°C to 125°C.
9.4 Device Functional Modes
9.4.1 Device Functional Modes for THVD1510 and THVD1550
When the driver enable pin, DE, is logic high, the differential outputs A and B follow the logic states at data input
D. A logic high at D causes A to turn high and B to turn low. In this case the differential output voltage defined as
VOD = VA – VB is positive. When D is low, the output states reverse: B turns high, A becomes low, and VOD is
negative.
When DE is low, both outputs turn high-impedance. In this condition the logic state at D is irrelevant. The DE pin
has an internal pull-down resistor to ground, thus when left open the driver is disabled (high-impedance) by
default. The D pin has an internal pull-up resistor to VCC, thus, when left open while the driver is enabled, output
A turns high and B turns low.
Table 1. Driver Function Table for THVD1510 and THVD1550
INPUT
ENABLE
D
DE
A
OUTPUTS
B
H
H
H
L
Actively drive bus high
Actively drive bus low
FUNCTION
L
H
L
H
X
L
Z
Z
Driver disabled
X
OPEN
Z
Z
Driver disabled by default
OPEN
H
H
L
Actively drive bus high by default
When the receiver enable pin, RE, is logic low, the receiver is enabled. When the differential input voltage
defined as VID = VA – VB is higher than the positive input threshold, VTH+, the receiver output, R, turns high.
When VID is lower than the negative input threshold, VTH-, the receiver output, R, turns low. If VID is between VTH+
and VTH- the output is indeterminate.
When RE is logic high or left open, the receiver output is high-impedance and the magnitude and polarity of VID
are irrelevant. Internal biasing of the receiver inputs causes the output to go failsafe-high when the transceiver is
disconnected from the bus (open-circuit), the bus lines are shorted to one another (short-circuit), or the bus is not
actively driven (idle bus).
Table 2. Receiver Function Table for THVD1510 and THVD1550
DIFFERENTIAL INPUT
ENABLE
OUTPUT
VID = VA – VB
RE
R
VTH+ < VID
L
H
Receive valid bus high
VTH- < VID < VTH+
L
?
Indeterminate bus state
VID < VTH-
L
L
Receive valid bus low
X
H
Z
Receiver disabled
FUNCTION
X
OPEN
Z
Receiver disabled by default
Open-circuit bus
L
H
Fail-safe high output
Short-circuit bus
L
H
Fail-safe high output
Idle (terminated) bus
L
H
Fail-safe high output
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9.4.2 Device Functional Modes for THVD1551
For this device, the driver and receiver are fully enabled, thus the differential outputs Y and Z follow the logic
states at data input D at all times. A logic high at D causes Y to turn high and Z to turn low. In this case, the
differential output voltage defined as VOD = VY – VZ is positive. When D is low, the output states reverse: Z turns
high, Y becomes low, and VOD is negative. The D pin has an internal pull-up resistor to VCC, thus, when left
open while the driver is enabled, output Y turns high and Z turns low.
Table 3. Driver Function Table for THVD1551
INPUT
OUTPUTS
FUNCTIONS
D
Y
Z
H
H
L
L
L
H
Actively drive bus low
OPEN
H
L
Actively drive bus high by default
Actively drive bus high
When the differential input voltage defined as VID = VA – VB is higher than the positive input threshold, VTH+, the
receiver output, R, turns high. When VID is less than the negative input threshold, VTH–, the receiver output, R,
turns low. If VID is between VTH+ and VTH– the output is indeterminate. Internal biasing of the receiver inputs
causes the output to go failsafe-high when the transceiver is disconnected from the bus (open-circuit), the bus
lines are shorted to one another (short-circuit), or the bus is not actively driven (idle bus).
Table 4. Receiver Function Table for THVD1551
DIFFERENTIAL INPUT
OUTPUT
VID = VA – VB
R
VTH+ < VID
H
Receive valid bus high
VTH- < VID < VTH+
?
Indeterminate bus state
FUNCTION
VID < VTH-
L
Receive valid bus low
Open-circuit bus
H
Fail-safe high output
Short-circuit bus
H
Fail-safe high output
Idle (terminated) bus
H
Fail-safe high output
9.4.3 Device Functional Modes for THVD1512 and THVD1552
When the driver enable pin, DE, is logic high, the differential outputs Y and Z follow the logic states at data input
D. A logic high at D causes Y to turn high and Z to turn low. In this case the differential output voltage defined as
VOD = VY – VZ is positive. When D is low, the output states reverse: Z turns high, Y becomes low, and VOD is
negative.
When DE is low, both outputs turn high-impedance. In this condition the logic state at D is irrelevant. The DE pin
has an internal pull-down resistor to ground, thus when left open the driver is disabled (high-impedance) by
default. The D pin has an internal pull-up resistor to VCC, thus, when left open while the driver is enabled, output
Y turns high and Z turns low.
Table 5. Driver Function Table for THVD1512 and THVD1552
16
INPUT
ENABLE
D
DE
Y
OUTPUTS
Z
H
H
H
L
Actively drive bus high
Actively drive bus low
FUNCTION
L
H
L
H
X
L
Z
Z
Driver disabled
X
OPEN
Z
Z
Driver disabled by default
OPEN
H
H
L
Actively drive bus high by default
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When the receiver enable pin, RE, is logic low, the receiver is enabled. When the differential input voltage
defined as VID = VA – VB is higher than the positive input threshold, VTH+, the receiver output, R, turns high.
When VID is lower than the negative input threshold, VTH-, the receiver output, R, turns low. If VID is between VTH+
and VTH- the output is indeterminate.
When RE is logic high or left open, the receiver output is high-impedance and the magnitude and polarity of VID
are irrelevant. Internal biasing of the receiver inputs causes the output to go failsafe-high when the transceiver is
disconnected from the bus (open-circuit), the bus lines are shorted to one another (short-circuit), or the bus is not
actively driven (idle bus).
Table 6. Receiver Function Table for THVD1512 and THVD1552
DIFFERENTIAL INPUT
ENABLE
OUTPUT
VID = VA – VB
RE
R
VTH+ < VID
L
H
Receive valid bus high
VTH- < VID < VTH+
L
?
Indeterminate bus state
Receive valid bus low
FUNCTION
VID < VTH-
L
L
X
H
Z
Receiver disabled
X
OPEN
Z
Receiver disabled by default
Open-circuit bus
L
H
Fail-safe high output
Short-circuit bus
L
H
Fail-safe high output
Idle (terminated) bus
L
H
Fail-safe high output
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10 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
10.1 Application Information
The THVD15xx family consists of half-duplex and full-duplex RS-485 transceivers commonly used for
asynchronous data transmissions. For half-duplex devices, the driver and receiver enable pins allow for the
configuration of different operating modes. Full-duplex implementation requires two signal pairs (four wires), and
allows each node to transmit data on one pair while simultaneously receiving data on the other pair.
10.2 Typical Application
An RS-485 bus consists of multiple transceivers connecting in parallel to a bus cable. To eliminate line
reflections, each cable end is terminated with a termination resistor, RT, whose value matches the characteristic
impedance, Z0, of the cable. This method, known as parallel termination, generally allows for higher data rates
over longer cable length.
R
R
R
A
RE
D
RT
B
DE
R
A
RT
D
A
R
B
A
R
D
R RE DE D
RE
B
DE
D
B
D
D
R RE DE D
Figure 22. Typical RS-485 Network With Half-Duplex Transceivers
Y
R
D
Z
A
RT
RT
B
R
R
DE
RE
Master
RE
D
Slave
B
R
A
DE
Z
RT
RT
A
B
Z
Y
D
D
Y
R Slave
D
R RE DE D
Figure 23. Typical RS-485 Network With Full-Duplex Transceivers
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Typical Application (continued)
10.2.1 Design Requirements
RS-485 is a robust electrical standard suitable for long-distance networking that may be used in a wide range of
applications with varying requirements, such as distance, data rate, and number of nodes.
10.2.1.1 Data Rate and Bus Length
There is an inverse relationship between data rate and cable length, which means the higher the data rate, the
shorter the cable length; and conversely, the lower the data rate, the longer the cable length. While most RS-485
systems use data rates between 10 kbps and 100 kbps, some applications require data rates up to 250 kbps at
distances of 4000 feet and longer. Longer distances are possible by allowing for small signal jitter of up to 5 or
10%.
10000
Cable Length (ft)
5%, 10%, and 20% Jitter
1000
Conservative
Characteristics
100
10
100
1k
10 k
100 k
1M
10 M
100 M
Data Rate (bps)
Figure 24. Cable Length vs Data Rate Characteristic
Even higher data rates are achievable (that is, 50 Mbps for the THVD1550, THVD1551 and THVD1552) in cases
where the interconnect is short enough (or has suitably low attenuation at signal frequencies) to not degrade the
data.
10.2.1.2 Stub Length
When connecting a node to the bus, the distance between the transceiver inputs and the cable trunk, known as
the stub, should be as short as possible. Stubs present a non-terminated piece of bus line which can introduce
reflections of varying phase as the length of the stub increases. As a general guideline, the electrical length, or
round-trip delay, of a stub should be less than one-tenth of the rise time of the driver, thus giving a maximum
physical stub length as shown in Equation 1.
L(STUB) ≤ 0.1 × tr × v × c
where
•
•
•
tr is the 10/90 rise time of the driver
c is the speed of light (3 × 108 m/s)
v is the signal velocity of the cable or trace as a factor of c
(1)
10.2.1.3 Bus Loading
The RS-485 standard specifies that a compliant driver must be able to drive 32 unit loads (UL), where 1 unit load
represents a load impedance of approximately 12 kΩ. Because the THVD15xx family consists of 1/8 UL
transceivers, connecting up to 256 receivers to the bus is possible.
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Typical Application (continued)
10.2.1.4 Receiver Failsafe
The differential receivers of the THVD15xx family are failsafe to invalid bus states caused by the following:
• Open bus conditions, such as a disconnected connector
• Shorted bus conditions, such as cable damage shorting the twisted-pair together
• Idle bus conditions that occur when no driver on the bus is actively driving
In any of these cases, the differential receiver will output a failsafe logic high state so that the output of the
receiver is not indeterminate.
Receiver failsafe is accomplished by offsetting the receiver thresholds such that the input indeterminate range
does not include zero volts differential. In order to comply with the RS-422 and RS-485 standards, the receiver
output must output a high when the differential input VID is more positive than 200 mV, and must output a low
when VID is more negative than –200 mV. The receiver parameters which determine the failsafe performance are
VTH+, VTH–, and VHYS (the separation between VTH+ and VTH–). As shown in the Electrical Characteristics table,
differential signals more negative than –200 mV will always cause a low receiver output, and differential signals
more positive than 200 mV will always cause a high receiver output.
When the differential input signal is close to zero, it is still above the VTH+ threshold, and the receiver output will
be high. Only when the differential input is more than VHYS below VTH+ will the receiver output transition to a low
state. Therefore, the noise immunity of the receiver inputs during a bus fault conditions includes the receiver
hysteresis value, Vhys, as well as the value of VTH+.
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Typical Application (continued)
10.2.1.5 Transient Protection
The bus pins of the THVD15xx transceiver family include on-chip ESD protection against ±30-kV HBM and ±18kV IEC 61000-4-2 contact discharge. The International Electrotechnical Commission (IEC) ESD test is far more
severe than the HBM ESD test. The 50% higher charge capacitance, C(S), and 78% lower discharge resistance,
R(D), of the IEC model produce significantly higher discharge currents than the HBM model. As stated in the IEC
61000-4-2 standard, contact discharge is the preferred transient protection test method.
R(C)
R(D)
High-Voltage
Pulse
Generator
330 Ω
(1.5 kΩ)
Device
Under
Test
150 pF
(100 pF)
C(S)
Current (A)
50 M
(1 M)
40
35
30 10-kV IEC
25
20
15
10
5
0
0
50
100
10-kV HBM
150
200
250
300
Time (ns)
Figure 25. HBM and IEC ESD Models and Currents in Comparison (HBM Values in Parenthesis)
The on-chip implementation of IEC ESD protection significantly increases the robustness of equipment. Common
discharge events occur because of human contact with connectors and cables. Designers may choose to
implement protection against longer duration transients, typically referred to as surge transients.
EFTs are generally caused by relay-contact bounce or the interruption of inductive loads. Surge transients often
result from lightning strikes (direct strike or an indirect strike which induce voltages and currents), or the
switching of power systems, including load changes and short circuit switching. These transients are often
encountered in industrial environments, such as factory automation and power-grid systems.
Figure 26 compares the pulse power of the EFT and surge transients with the power caused by an IEC ESD
transient. The left-hand diagram shows the relative pulse-power for a 0.5-kV surge transient and 4-kV EFT
transient, both of which dwarf the 10-kV ESD transient visible in the lower-left corner. 500-V surge transients are
representative of events that may occur in factory environments in industrial and process automation.
22
20
18
16
14
12
10
8
6
4
2
0
Pulse Power (MW)
Pulse Power (kW)
The right-hand diagram shows the pulse-power of a 6-kV surge transient, relative to the same 0.5-kV surge
transient. 6-kV surge transients are most likely to occur in power generation and power-grid systems.
0.5-kV Surge
4-kV EFT
10-kV ESD
0
5
10
15
20
25
Time (µs)
30
35
40
3.0
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
6-kV Surge
0.5-kV Surge
0
5
10
15
20
25
30
35
40
Time (µs)
Figure 26. Power Comparison of ESD, EFT, and Surge Transients
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Typical Application (continued)
In the case of surge transients, high-energy content is characterized by long pulse duration and slow decaying
pulse power. The electrical energy of a transient that is dumped into the internal protection cells of a transceiver
is converted into thermal energy, which heats and destroys the protection cells, thus destroying the transceiver.
Figure 27 shows the large differences in transient energies for single ESD, EFT, surge transients, and an EFT
pulse train that is commonly applied during compliance testing.
1000
100
Surge
10
1
Pulse Energy (J)
EFT Pulse Train
0.1
0.01
EFT
10-3
10-4
ESD
10-5
10-6
0.5
1
2
4
6
8 10
15
Peak Pulse Voltage (kV)
Figure 27. Comparison of Transient Energies
10.2.2 Detailed Design Procedure
Figure 28 and Figure 29 suggest a protection circuit against 1 kV surge (IEC 61000-4-5) transients. Table 7
shows the associated bill of materials.
5V
100nF
100nF
10k
VCC
R1
R
RxD
MCU/
UART
DIR
RE
A
DE
B
TVS
D
TxD
R2
10k
GND
Figure 28. Transient Protection Against Surge Transients for Half-Duplex Devices
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SLLSEV1C – SEPTEMBER 2017 – REVISED DECEMBER 2018
Typical Application (continued)
5V
100nF
R1
10k
VCC
A
TVS
R
RxD
B
RE
DIR
R2
R1
MCU/
UART
DE
DIR
Z
TVS
D
TxD
Y
10k
GND
R2
Figure 29. Transient Protection Against Surge Transients for Full-Duplex Devices
Table 7. Bill of Materials
DEVICE
FUNCTION
ORDER NUMBER
MANUFACTURER
XCVR
5-V, RS-485 transceiver
THVD15xx
TI
10-Ω, pulse-proof thick-film resistor
CRCW0603010RJNEAHP
Vishay
Bidirectional 400-W transient suppressor
CDSOT23-SM712
Bourns
R1
R2
TVS
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10.2.3 Application Curves
500 kbps
50 Mbps
Figure 30. THVD1510 Waveforms with 60-Ω Termination
Figure 31. THVD1550 Waveforms with 60-Ω Termination
11 Power Supply Recommendations
To ensure reliable operation at all data rates and supply voltages, each supply should be decoupled with a 100
nF ceramic capacitor located as close to the supply pins as possible. This helps to reduce supply voltage ripple
present on the outputs of switched-mode power supplies and also helps to compensate for the resistance and
inductance of the PCB power planes.
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SLLSEV1C – SEPTEMBER 2017 – REVISED DECEMBER 2018
12 Layout
12.1 Layout Guidelines
Robust and reliable bus node design often requires the use of external transient protection devices in order to
protect against surge transients that may occur in industrial environments. Since these transients have a wide
frequency bandwidth (from approximately 3 MHz to 300 MHz), high-frequency layout techniques should be
applied during PCB design.
1. Place the protection circuitry close to the bus connector to prevent noise transients from propagating across
the board.
2. Use VCC and ground planes to provide low inductance. Note that high-frequency currents tend to follow the
path of least impedance and not the path of least resistance.
3. Design the protection components into the direction of the signal path. Do not force the transient currents to
divert from the signal path to reach the protection device.
4. Apply 100-nF to 220-nF decoupling capacitors as close as possible to the VCC pins of transceiver, UART
and/or controller ICs on the board.
5. Use at least two vias for VCC and ground connections of decoupling capacitors and protection devices to
minimize effective via inductance.
6. Use 1-kΩ to 10-kΩ pullup and pulldown resistors for enable lines to limit noise currents in these lines during
transient events.
7. Insert pulse-proof resistors into the A and B bus lines if the TVS clamping voltage is higher than the specified
maximum voltage of the transceiver bus pins. These resistors limit the residual clamping current into the
transceiver and prevent it from latching up.
8. While pure TVS protection is sufficient for surge transients up to 1 kV, higher transients require metal-oxide
varistors (MOVs) which reduce the transients to a few hundred volts of clamping voltage, and transient
blocking units (TBUs) that limit transient current to less than 1 mA.
12.2 Layout Example
5
Via to ground
C
R
Via to VCC
R
1
JMP
6
4
R
MCU
5
6
R
THVD15x0
TVS
5
Figure 32. Half-Duplex Layout Example
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SLLSEV1C – SEPTEMBER 2017 – REVISED DECEMBER 2018
www.ti.com
13 Device and Documentation Support
13.1 Device Support
13.2 Third-Party Products Disclaimer
TI'S PUBLICATION OF INFORMATION REGARDING THIRD-PARTY PRODUCTS OR SERVICES DOES NOT
CONSTITUTE AN ENDORSEMENT REGARDING THE SUITABILITY OF SUCH PRODUCTS OR SERVICES
OR A WARRANTY, REPRESENTATION OR ENDORSEMENT OF SUCH PRODUCTS OR SERVICES, EITHER
ALONE OR IN COMBINATION WITH ANY TI PRODUCT OR SERVICE.
13.3 Related Links
The table below lists quick access links. Categories include technical documents, support and community
resources, tools and software, and quick access to order now.
Table 8. Related Links
PARTS
PRODUCT FOLDER
ORDER NOW
TECHNICAL
DOCUMENTS
TOOLS &
SOFTWARE
SUPPORT &
COMMUNITY
THVD1510
Click here
Click here
Click here
Click here
Click here
THVD1512
Click here
Click here
Click here
Click here
Click here
THVD1550
Click here
Click here
Click here
Click here
Click here
THVD1551
Click here
Click here
Click here
Click here
Click here
THVD1552
Click here
Click here
Click here
Click here
Click here
13.4 Receiving Notification of Documentation Updates
To receive notification of documentation updates — go to the product folder for your device on ti.com. In the
upper right-hand corner, click the Alert me button to register and receive a weekly digest of product information
that has changed (if any). For change details, check the revision history of any revised document.
13.5 Community Resources
The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective
contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of
Use.
TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration
among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help
solve problems with fellow engineers.
Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and
contact information for technical support.
13.6 Trademarks
E2E is a trademark of Texas Instruments.
13.7 Electrostatic Discharge Caution
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
13.8 Glossary
SLYZ022 — TI Glossary.
This glossary lists and explains terms, acronyms, and definitions.
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SLLSEV1C – SEPTEMBER 2017 – REVISED DECEMBER 2018
14 Mechanical, Packaging, and Orderable Information
The following pages include mechanical, packaging, and orderable information. This information is the most
current data available for the designated devices. This data is subject to change without notice and revision of
this document. For browser-based versions of this data sheet, refer to the left-hand navigation.
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SLLSEV1C – SEPTEMBER 2017 – REVISED DECEMBER 2018
www.ti.com
PACKAGE OUTLINE
D0008B
SOIC - 1.75 mm max height
SCALE 2.800
SOIC
C
SEATING PLANE
.228-.244 TYP
[5.80-6.19]
A
.004 [0.1] C
PIN 1 ID AREA
6X .050
[1.27]
8
1
2X
.150
[3.81]
.189-.197
[4.81-5.00]
NOTE 3
4
5
B
.150-.157
[3.81-3.98]
NOTE 4
8X .012-.020
[0.31-0.51]
.010 [0.25]
C A
.069 MAX
[1.75]
B
.005-.010 TYP
[0.13-0.25]
SEE DETAIL A
.010
[0.25]
.004-.010
[ 0.11 -0.25]
0 -8
.016-.050
[0.41-1.27]
DETAIL A
.041
[1.04]
TYPICAL
4221445/B 04/2014
NOTES:
1. Linear dimensions are in inches [millimeters]. Dimensions in parenthesis are for reference only. Controlling dimensions are in inches.
Dimensioning and tolerancing per ASME Y14.5M.
2. This drawing is subject to change without notice.
3. This dimension does not include mold flash, protrusions, or gate burrs. Mold flash, protrusions, or gate burrs shall not
exceed .006 [0.15], per side.
4. This dimension does not include interlead flash.
5. Reference JEDEC registration MS-012, variation AA.
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SLLSEV1C – SEPTEMBER 2017 – REVISED DECEMBER 2018
EXAMPLE BOARD LAYOUT
D0008B
SOIC - 1.75 mm max height
SOIC
8X (.061 )
[1.55]
SEE
DETAILS
SYMM
8X (.055)
[1.4]
SEE
DETAILS
SYMM
1
1
8
8X (.024)
[0.6]
8
SYMM
8X (.024)
[0.6]
5
4
6X (.050 )
[1.27]
SYMM
5
4
6X (.050 )
[1.27]
(.213)
[5.4]
(.217)
[5.5]
HV / ISOLATION OPTION
.162 [4.1] CLEARANCE / CREEPAGE
IPC-7351 NOMINAL
.150 [3.85] CLEARANCE / CREEPAGE
LAND PATTERN EXAMPLE
SCALE:6X
SOLDER MASK
OPENING
METAL
SOLDER MASK
OPENING
.0028 MAX
[0.07]
ALL AROUND
METAL
.0028 MIN
[0.07]
ALL AROUND
SOLDER MASK
DEFINED
NON SOLDER MASK
DEFINED
SOLDER MASK DETAILS
4221445/B 04/2014
NOTES: (continued)
6. Publication IPC-7351 may have alternate designs.
7. Solder mask tolerances between and around signal pads can vary based on board fabrication site.
www.ti.com
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EXAMPLE STENCIL DESIGN
D0008B
SOIC - 1.75 mm max height
SOIC
8X (.061 )
[1.55]
8X (.055)
[1.4]
SYMM
SYMM
1
1
8
8X (.024)
[0.6]
6X (.050 )
[1.27]
8
SYMM
8X (.024)
[0.6]
5
4
6X (.050 )
[1.27]
SYMM
5
4
(.217)
[5.5]
(.213)
[5.4]
HV / ISOLATION OPTION
.162 [4.1] CLEARANCE / CREEPAGE
IPC-7351 NOMINAL
.150 [3.85] CLEARANCE / CREEPAGE
SOLDER PASTE EXAMPLE
BASED ON .005 INCH [0.127 MM] THICK STENCIL
SCALE:6X
4221445/B 04/2014
NOTES: (continued)
8. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate
design recommendations.
9. Board assembly site may have different recommendations for stencil design.
www.ti.com
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SLLSEV1C – SEPTEMBER 2017 – REVISED DECEMBER 2018
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31
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SLLSEV1C – SEPTEMBER 2017 – REVISED DECEMBER 2018
32
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SLLSEV1C – SEPTEMBER 2017 – REVISED DECEMBER 2018
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SLLSEV1C – SEPTEMBER 2017 – REVISED DECEMBER 2018
www.ti.com
PACKAGE OUTLINE
DGS0010A
VSSOP - 1.1 mm max height
SCALE 3.200
SMALL OUTLINE PACKAGE
C
5.05
TYP
4.75
SEATING PLANE
PIN 1 ID
AREA
A
0.1 C
8X 0.5
10
1
3.1
2.9
NOTE 3
2X
2
5
6
10X
B
3.1
2.9
NOTE 4
SEE DETAIL A
0.27
0.17
0.1
C A
1.1 MAX
B
0.23
TYP
0.13
0.25
GAGE PLANE
0 -8
0.15
0.05
0.7
0.4
DETAIL A
TYPICAL
4221984/A 05/2015
NOTES:
1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing
per ASME Y14.5M.
2. This drawing is subject to change without notice.
3. This dimension does not include mold flash, protrusions, or gate burrs. Mold flash, protrusions, or gate burrs shall not
exceed 0.15 mm per side.
4. This dimension does not include interlead flash. Interlead flash shall not exceed 0.25 mm per side.
5. Reference JEDEC registration MO-187, variation BA.
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SLLSEV1C – SEPTEMBER 2017 – REVISED DECEMBER 2018
EXAMPLE BOARD LAYOUT
DGS0010A
VSSOP - 1.1 mm max height
SMALL OUTLINE PACKAGE
10X (1.45)
(R0.05)
TYP
SYMM
10X (0.3)
1
10
SYMM
6
5
8X (0.5)
(4.4)
LAND PATTERN EXAMPLE
SCALE:10X
SOLDER MASK
OPENING
METAL
SOLDER MASK
OPENING
METAL UNDER
SOLDER MASK
0.05 MAX
ALL AROUND
0.05 MIN
ALL AROUND
SOLDER MASK
DEFINED
NON SOLDER MASK
DEFINED
SOLDER MASK DETAILS
NOT TO SCALE
4221984/A 05/2015
NOTES: (continued)
6. Publication IPC-7351 may have alternate designs.
7. Solder mask tolerances between and around signal pads can vary based on board fabrication site.
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SLLSEV1C – SEPTEMBER 2017 – REVISED DECEMBER 2018
www.ti.com
EXAMPLE STENCIL DESIGN
DGS0010A
VSSOP - 1.1 mm max height
SMALL OUTLINE PACKAGE
10X (1.45)
10X (0.3)
SYMM
(R0.05) TYP
1
10
SYMM
8X (0.5)
6
5
(4.4)
SOLDER PASTE EXAMPLE
BASED ON 0.125 mm THICK STENCIL
SCALE:10X
4221984/A 05/2015
NOTES: (continued)
8. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate
design recommendations.
9. Board assembly site may have different recommendations for stencil design.
www.ti.com
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PACKAGE OPTION ADDENDUM
www.ti.com
10-Dec-2020
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
(4/5)
(6)
THVD1510D
ACTIVE
SOIC
D
8
75
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
VD1510
THVD1510DGK
ACTIVE
VSSOP
DGK
8
80
RoHS & Green
NIPDAUAG
Level-1-260C-UNLIM
-40 to 125
1510
THVD1510DGKR
ACTIVE
VSSOP
DGK
8
2500
RoHS & Green
NIPDAUAG
Level-1-260C-UNLIM
-40 to 125
1510
THVD1510DR
ACTIVE
SOIC
D
8
2500
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
VD1510
THVD1512DGS
ACTIVE
VSSOP
DGS
10
80
RoHS & Green
NIPDAUAG
Level-1-260C-UNLIM
-40 to 125
1512
THVD1512DGSR
ACTIVE
VSSOP
DGS
10
2500
RoHS & Green
NIPDAUAG
Level-1-260C-UNLIM
-40 to 125
1512
THVD1550D
ACTIVE
SOIC
D
8
75
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
VD1550
THVD1550DGK
ACTIVE
VSSOP
DGK
8
80
RoHS & Green
NIPDAUAG
Level-1-260C-UNLIM
-40 to 125
1550
THVD1550DGKR
ACTIVE
VSSOP
DGK
8
2500
RoHS & Green
NIPDAUAG
Level-1-260C-UNLIM
-40 to 125
1550
THVD1550DR
ACTIVE
SOIC
D
8
2500
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
VD1550
THVD1551DGK
ACTIVE
VSSOP
DGK
8
80
RoHS & Green
NIPDAUAG
Level-1-260C-UNLIM
-40 to 125
1551
THVD1551DGKR
ACTIVE
VSSOP
DGK
8
2500
RoHS & Green
NIPDAUAG
Level-1-260C-UNLIM
-40 to 125
1551
THVD1552D
ACTIVE
SOIC
D
14
50
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
1552
THVD1552DGS
ACTIVE
VSSOP
DGS
10
80
RoHS & Green
NIPDAUAG
Level-1-260C-UNLIM
-40 to 125
1552
THVD1552DGSR
ACTIVE
VSSOP
DGS
10
2500
RoHS & Green
NIPDAUAG
Level-1-260C-UNLIM
-40 to 125
1552
THVD1552DR
ACTIVE
SOIC
D
14
2500
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
1552
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
Addendum-Page 1
Samples
PACKAGE OPTION ADDENDUM
www.ti.com
10-Dec-2020
(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
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