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ISO15, ISO35, ISO15M, ISO35M
SLOS580G – MAY 2008 – REVISED MARCH 2015
ISOx5 Isolated 3.3-V Half- and Full-Duplex RS-485 Transceivers
1 Features
3 Description
•
•
•
•
•
•
•
•
•
The ISO15 is an isolated half-duplex differential line
transceiver while the ISO35 is an isolated full-duplex
differential line driver and receiver for TIA/EIA
485/422 applications. The ISO15M and ISO35M have
extended ambient temperature ratings of –55°C to
125°C while the ISO15 and ISO35 are specified over
–40°C to 85°C.
1
Meets or Exceeds TIA/EIA RS-485 Requirements
1/8 Unit Load – Up to 256 Nodes on a Bus
Signaling Rates up to 1 Mbps
Thermal Shutdown Protection
Low Bus Capacitance – 16 pF (Typical)
50 kV/μs Typical Transient Immunity
Fail-safe Receiver for Bus Open, Short, Idle
3.3-V Inputs are 5-V Tolerant
Safety and Regulatory Approvals
– 4000-VPK VIOTM, 560-VPK VIORM per DIN V VDE
V 0884-10 (VDE V 0884-10):2006-12 and DIN
EN 61010-1
– 2500 VRMS Isolation Rating per UL 1577
– 2500 VRMS Isolation Rating per CSA CA5A and
IEC 60950-1
2 Applications
•
•
•
•
•
•
Security Systems
Chemical Production
Factory Automation
Motor and Motion Control
HVAC and Building Automation Networks
Networked Security Stations
These devices are ideal for long transmission lines
because the ground loop is broken to allow for a
much larger common-mode voltage range. The
symmetrical barrier of the device is tested to provide
isolatlion of 4000 VPK per VDE and 2500 VRMS per UL
and CSA between the bus-line transceiver and the
logic-level interface.
Any cabled I/O can be subjected to electrical noise
transients from various sources. These noise
transients can cause damage to the transceiver
and/or nearby sensitive circuitry if they are of
sufficient magnitude and duration. These isolated
devices can significantly increase protection and
reduce the risk of damage to expensive control
circuits.
Device Information(1)
PART NUMBER
ISO15
PACKAGE
SOIC (16)
ISO35
BODY SIZE (NOM)
10.30 mm × 7.50 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
4 Simplified Schematics
D
R
RE
5
6
3
4
GALVANIC ISOLATION
DE
R
13
12
B
3
4
RE
DE 5
A
D
6
GALVANIC ISOLATIO N
ISO35x
ISO15x
14
13
12
A
B
Z
11
Y
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.
ISO15, ISO35, ISO15M, ISO35M
SLOS580G – MAY 2008 – REVISED MARCH 2015
www.ti.com
Table of Contents
1
2
3
4
5
6
7
8
Features ..................................................................
Applications ...........................................................
Description .............................................................
Simplified Schematics...........................................
Revision History.....................................................
Pin Configuration and Functions .........................
Specifications.........................................................
1
1
1
1
2
4
5
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
7.10
7.11
5
5
5
6
6
6
6
7
7
7
8
Absolute Maximum Ratings .....................................
ESD Ratings..............................................................
Recommended Operating Conditions.......................
Thermal Information ..................................................
Dissipation Ratings ...................................................
Supply Current ..........................................................
Driver Electrical Characteristics ................................
Receiver Electrical Characteristics ...........................
Driver Switching Characteristics ...............................
Receiver Switching Characteristics.........................
Typical Characteristics ............................................
Parameter Measurement Information .................. 9
9
Detailed Description ............................................ 13
9.1
9.2
9.3
9.4
Overview .................................................................
Functional Block Diagrams .....................................
Feature Description.................................................
Device Functional Modes........................................
13
13
14
15
10 Application and Implementation........................ 18
10.1 Application Information.......................................... 18
10.2 Typical Application ............................................... 18
11 Power Supply Recommendations ..................... 20
12 Layout................................................................... 20
12.1 Layout Guidelines ................................................. 20
12.2 Layout Example .................................................... 21
13 Device and Documentation Support ................. 22
13.1
13.2
13.3
13.4
13.5
Documentation Support ........................................
Related Links ........................................................
Trademarks ...........................................................
Electrostatic Discharge Caution ............................
Glossary ................................................................
22
22
22
22
22
14 Mechanical, Packaging, and Orderable
Information ........................................................... 22
5 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision F (January 2012) to Revision G
Page
•
Added Pin Configuration and Functions section, ESD Rating table, Feature Description section, Device Functional
Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device
and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .............................. 1
•
Changed VDE standard to DIN V VDE V 0884-10 (VDE V 0884-10):2006-12. .................................................................... 1
Changes from Revision E (April 2010) to Revision F
Page
•
Changed the FEATURES From: 4000-Vpeak 560-Vpeak VIORM per IEC....Rev 2) To: 4000-VPK VIOTM, 560-VPKVIORM,
IEC 60747-5-2 (VDE 0884, Rev 2)......................................................................................................................................... 1
•
Changed Description From: The symmetrical isolation......interface. To; The symmetrical isolation barrier of the
device is tested to provide isolatlion of 4000 VPK per VDE and 2500 VRMS per UL and CSA between ....interface. ............. 1
•
Changed CTI From: ≥175 V To: ≥400 V................................................................................................................................. 7
•
Changed the Regulatory Information Table............................................................................................................................ 7
Changes from Revision D (March 2009) to Revision E
Page
•
Added devices ISO15M and ISO35M to the data sheet ........................................................................................................ 1
•
Changed Description - From: The ISO15 and ISO35 are qualified for use from –40°C to 85°C. To: The ISO15M and
ISO35M have extended ambient temperature ratings of –55°C to 125°C while the ISO15 and ISO35 are specified
over –40°C to 85°C................................................................................................................................................................. 1
•
Added Added Ambient Temp information in the RECOMMENDED OPERATING CONDITIONS table................................ 5
•
Added ISO15M and ISO35M to the Operating junction temperature in the RECOMMENDED OPERATING
CONDITIONS table ................................................................................................................................................................ 5
•
Changed the DRIVER ELECTRICAL table, IOZ High-impedance state output current - Test Condition VY or VZ = 12
V, VCC = 0 values From: TYP = -10 , MAX = - To: TYP = -, MAX = 90. ............................................................................... 6
•
Changed the DRIVER ELECTRICAL table, IOZ High-impedance state output current - Test Condition VY or VZ = –7
2
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Product Folder Links: ISO15 ISO35 ISO15M ISO35M
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SLOS580G – MAY 2008 – REVISED MARCH 2015
V values From: TYP = -, MAX = 90 To: TYP = -10, MAX = - ................................................................................................ 6
•
Added IA or IB limits for the ISO15M ans ISO35M devices .................................................................................................... 7
•
Added tr, tf limits for the ISO15M ans ISO35M devices ......................................................................................................... 7
•
Added pulse skew limits for the ISO15M ans ISO35M devices ............................................................................................. 7
•
Added tr, tf for the ISO15M ans ISO35M devices................................................................................................................... 7
•
Added the Driver output pins Note for Figure 3 through Figure 6 .......................................................................................... 9
•
Changed the Driver output pins Note for Figure 7 through Figure 8.................................................................................... 10
Changes from Revision C (December 2008) to Revision D
•
Page
Changed Propagation delay values From: μs To: ns in the DRIVER SWITCHING table...................................................... 7
Changes from Revision B (July 2008) to Revision C
Page
•
Added added IEC......Approved.............................................................................................................................................. 1
•
Added added CSA information column back in table............................................................................................................. 7
Changes from Revision A (June 2008) to Revision B
Page
•
Changed From: 4000-Vpeak Isolation To: 4000-Vpeak Isolation, 560-Vpeak VIORM UL 1577, IEC 60747-5-2 (VDE
0884, Rev 2) ........................................................................................................................................................................... 1
•
Changed Figure 15, Full-Duplex Common-Mode Transient Immunity Test Circuit.............................................................. 12
Changes from Original (May 2008) to Revision A
Page
•
Changed L(101) Minimum air gap (Clearance) From 7.7mm To 8.34mm. ............................................................................ 7
•
Changed From 40014131 To 40016131 ................................................................................................................................ 7
•
Deleted CSA information from the Regulatory Information Table. ......................................................................................... 7
Copyright © 2008–2015, Texas Instruments Incorporated
Product Folder Links: ISO15 ISO35 ISO15M ISO35M
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ISO15, ISO35, ISO15M, ISO35M
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6 Pin Configuration and Functions
ISO35x DW Package
16-Pin SOIC
Top View
VCC1
GND1
R
RE
DE
D
GND1
GND1
1
2
16
15
VCC2
GND2
3
4
5
6
7
8
14
13
12
A
B
Z
Y
GND2
11
10
9
GND2
ISO15x DW Package
16-Pin SOIC
Top View
VCC1
GND1
R
RE
DE
D
GND1
GND1
1
2
16
15
3
4
5
6
7
8
14
13
12
11
10
9
VCC2
GND2
NC
B
A
NC
GND2
GND2
Pin Functions
PIN
NAME
VCC1
ISO15x
NO.
ISO35x
NO.
I/O
DESCRIPTION
1
1
–
Logic side power supply
2,7,8
2,7,8
–
Logic side ground; internally connected
R
3
3
O
Receiver output
RE
4
4
I
Receiver logic-low enable
DE
5
5
I
Driver logic-high enable input
D
6
6
I
Driver input
9,10,15
9,10,15
–
Bus side ground; internally connected
11,14
–
–
Not connected internally; may be left floating
GND1
GND2
NC
A
12
14
B
13
13
Y
–
Z
VCC2
4
I/O
I
I/O
ISO15x: Noninverting bus input / output
ISO35x: Noninverting bus input
ISO15x: Inverting bus input / output
I
ISO35x: Inverting bus input
11
O
Noninverting bus output
–
12
O
Inverting bus output
16
16
–
Bus side power supply
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Product Folder Links: ISO15 ISO35 ISO15M ISO35M
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SLOS580G – MAY 2008 – REVISED MARCH 2015
7 Specifications
7.1 Absolute Maximum Ratings (1)
MAX
MAX
UNIT
–0.3
6
V
Voltage at any bus I/O terminal
–9
14
V
VIT
Voltage input, transient pulse, A, B, Y, and Z (through 100Ω, see Figure 13)
–50
50
V
VI
Voltage input at any D, DE or RE terminal
–0.5
7
V
IO
Receiver output current
–10
10
mA
TJ
Maximum junction temperature
170
°C
Tstg
Storage temperature
150
°C
VCC
Input supply voltage.
VO
(1)
(2)
(2)
VCC1, VCC2
-65
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings
only and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating
Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
All voltage values except differential I/O bus voltages are with respect to network ground terminal and are peak voltage values
7.2 ESD Ratings
VALUE
V(ESD)
Electrostatic
discharge
Human body model (HBM), per ANSI/ESDA/JEDEC JS001 (1)
Bus pins and GND1
±6000
Bus pins and GND2
±16000
All pins
±4000
Charged device model (CDM), per JEDEC specification JESD22-C101, all pins
(2)
V
±1000
Machine model ANSI/ESDS5.2-1996
(1)
(2)
UNIT
±200
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.
7.3 Recommended Operating Conditions
VCC
Supply Voltage, VCC1, VCC2
VOC
Voltage at either bus I/O terminal
VIH
High-level input voltage
VIL
Low-level input voltage
VID
Differential input voltage
RL
Differential input resistance
IO
Output current
1/tUI
Signaling rate
TA
Ambient temperature
TJ
Operating junction temperature
A, B
D, DE, RE
A with respect to B
MIN
NOM
MAX
3.15
3.3
3.6
V
–7
12
V
2
VCC
0
0.8
–12
54
Driver
Receiver
12
V
Ω
–60
60
–8
8
1
ISO15 and ISO35
–40
25
85
ISO15M and ISO35M
–55
25
125
ISO15 and ISO35
–40
150
ISO15M and ISO35M
–55
150
Product Folder Links: ISO15 ISO35 ISO15M ISO35M
V
60
ISO15x and ISO35x
Copyright © 2008–2015, Texas Instruments Incorporated
UNIT
mA
Mbps
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°C
°C
5
ISO15, ISO35, ISO15M, ISO35M
SLOS580G – MAY 2008 – REVISED MARCH 2015
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7.4 Thermal Information
THERMAL METRIC
ISO15,
ISO35
(1)
UNIT
DW (SOIC)
16 PINS
High-K board
79.6
RθJA
Junction-to-ambient thermal resistance
RθJC(top)
Junction-to-case (top) thermal resistance
39.7
RθJB
Junction-to-board thermal resistance
44.6
ψJT
Junction-to-top characterization parameter
11.8
ψJB
Junction-to-board characterization parameter
44
RθJC(bot)
Junction-to-case (bottom) thermal resistance
n/a
(1)
Low-K board
168
°C/W
For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
7.5 Dissipation Ratings
PD
VCC1 = VCC2 = 3.6 V, TJ = 150°C, CL = 15 pF,
Input a 0.5 MHz 50% duty cycle square wave
Device Power Dissipation
VALUE
UNIT
220
mW
7.6 Supply Current
over recommended operating condition (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
ICC1
Logic-side supply
current
ISO35x and RE at 0 V or VCC, DE at 0 V, No load (driver disabled)
ISO15x
RE at 0 V or VCC, DE at VCC, No Load (driver enabled)
ICC2
Bus-side supply
current
ISO35x and RE at 0 V or VCC, DE at 0 V, No load (driver disabled)
ISO15x
RE at 0 V or VCC, DE at VCC, No Load (driver enabled)
TYP
MAX
8
15
8
19
UNIT
mA
mA
7.7 Driver Electrical Characteristics
over recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
IO = 0 mA, no load
2.5
RL = 54 Ω, See Figure 3
1.5
2
2
2.3
| VOD |
Differential output voltage magnitude
Δ|VOD|
Change in magnitude of the differential
output voltage
VOC(SS)
Steady-state common-mode output voltage
ΔVOC(SS)
Change in steady-state common-mode
output voltage
VOC(pp)
Peak-to-peak common-mode output voltage See Figure 5
II
Input current
RL = 100 Ω (RS-422), See Figure 3
Vtest from –7 V to +12 V, See Figure 4
See Figure 3 and Figure 4
See Figure 5
MAX
V
1.5
–0.2
0
0.2
1
2.6
3
–0.1
0.1
0.5
D, DE, VI at 0 V or VCC1
UNIT
VCC
–10
V
V
V
10
μA
ISO15 See receiver input current
VY or VZ = 12 V
IOZ
High-impedance state output current
ISO35
VY or VZ = 12 V, VCC = 0
VY or VZ = –7 V
90
Other
input
at 0 V
VY or VZ = –7 V, VCC = 0
VA or VB at –7 V
Short-circuit output current
VA or VB at 12 V
COD
Differential output capacitance
VI = 0.4 sin (4E6πt) + 0.5 V, DE at 0 V
CMTI
Common-mode transient immunity
VI = VCC or 0 V, See Figure 14 and Figure 15
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μA
-10
Other
input
at 0 V
IOS
6
90
–10
–250
25
250
mA
16
pF
50
kV/μs
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SLOS580G – MAY 2008 – REVISED MARCH 2015
7.8 Receiver Electrical Characteristics
over recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VIT(+)
Positive-going input threshold voltage
IO = –8 mA
VIT(–)
Negative-going input threshold voltage
IO = 8 mA
Vhys
Hysteresis voltage (VIT+ – VIT–)
UNIT
–20
mV
mV
50
IO = –8 mA
Output voltage
VID = 200 mV, See
Figure 9
IOZ
High-impedance state output current
VI = –7 to 12 V, Other input = 0 V
-55oC ≤ TA ≤ 85oC
85oC ≤ TA ≤ 125oC
Bus input current
TYP MAX
–200
VO
IA or IB
MIN
-55oC ≤ TA ≤ 125oC
IO = 8 mA
–1
μA
1
VA or VB = 12 V, VCC = 0
VA or VB = 12 V, VCC = 0
V
0.4
VA or VB = 12 V
VA or VB = 12 V
mV
2.4
50
100
50
100
200
Other input at
0V
μA
200
VA or VB = –7 V
–100
–40
VA or VB = –7 V, VCC = 0
–100
–30
IIH
High-level input current, RE
VIH = 2 V
–10
μA
IIL
Low-level input current, RE
VIL = 0.8 V
–10
μA
RID
Differential input resistance
A, B
CID
Differential input capacitance
VI = 0.4 sin (4E6πt) + 0.5V, DE at 0 V
48
kΩ
16
pF
7.9 Driver Switching Characteristics
over recommended operating conditions (unless otherwise noted)
PARAMETER
TEST
CONDITIONS
MIN
TYP MAX
tPLH, tPHL Propagation delay
UNIT
340
tsk(p)
Pulse skew (|tPHL – tPLH|)
tr, tf
Differential output signal rise time, fall time
tPHZ
Propagation delay, high-level-to-high-impedance output
tPZH
Propagation delay, high-impedance-to-high-level output
tPLZ
Propagation delay, low-level to high-impedance output
tPZL
Propagation delay, standby-to-low-level output
ISO15 and ISO35
6
See Figure 6
ISO15M and ISO35M
120
180
300
120
180
350
ns
205
See Figure 7
ns
530
330
See Figure 8
ns
530
7.10 Receiver Switching Characteristics
over recommended operating conditions (unless otherwise noted)
PARAMETER
tPLH, tPHL
Propagation delay
TEST CONDITIONS
MIN
TYP
ISO15x and ISO35x
Pulse skew (|tPHL – tPLH|)
ISO15M and
ISO35M
13
18
See Figure 10
ISO15 and ISO35
2
4
ISO15M and
ISO35M
2
6
13
25
13
25
tr, tf
Output signal rise and fall time
tPZH,
tPZL
Propagation delay, high-impedance-to-high-level output
Propagation delay, high-impedance-to-low-level output
tPHZ,
tPLZ
Propagation delay, high-level-to-high-impedance output
Propagation delay, low-level to high-impedance output
UNIT
100
ISO15 and ISO35
tsk(p)
MAX
DE at 0 V, See Figure 11
and Figure 12
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ns
ns
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7.11 Typical Characteristics
25
60
20
Supply Current (mA)
Supply Current (mA)
50
40
ICC1 (3.3 V)
ICC2 (3.3 V)
30
20
ICC1 (3.3 V)
ICC2 (3.3 V)
10
5
10
0
0
0
200
400
600
Data Rate (kbps)
800
1000
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0
200
D001
D007
Figure 1. ISOx5 Supply Current vs Data Rate With Load
8
15
400
600
Data Rate (kbps)
800
1000
D002
D007
Figure 2. ISOx5 Supply Current vs Data Rate With No Load
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SLOS580G – MAY 2008 – REVISED MARCH 2015
8 Parameter Measurement Information
VCC2
VCC1
IOA
DE
DE
A
375 W
A
II
0 or
VCC1
D
VOD
B
GND1
D
0 or 3 V
+
VOD
-
B
60 W
IOB
GND2
VI
375 W
GND2
VOA
VOB
GND1
-7 V to 12 V
GND2
Figure 3. Driver VOD Test and Current Definitions
Figure 4. Driver VOD With Common-Mode Loading
Test Circuit
VCC1
IOA
DE
27 W
A
A
VA
B
VB
II
VOD
Input
D
VI
B
GND1
VOB
VOC
27 W
IOB
GND2
VOA
VOC(SS)
VOC(PP)
VOC
GND2
GND1
Figure 5. Test Circuit and Waveform Definitions for the Driver Common-Mode Output Voltage
3V
DE
VCC1
A
D
Input
Generator
VI
B
VI
VOD
RL = 54 W
±1%
CL = 50 pF
±20%
90%
50%
10%
GND1
Generator: PRR = 500 kHz, 50% duty
cycle, tr