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ISO1176T
SLLSE28G – OCTOBER 2010 – REVISED OCTOBER 2015
ISO1176T Isolated Profibus RS-485 Transceiver with Integrated Transformer Driver
1 Features
•
1
•
•
•
•
•
•
•
•
Meets or Exceeds the Requirements of EN 50170
and TIA/EIA-485-A
Signaling Rates up to 40 Mbps
Easy Isolated Power Design with Integrated
Transformer Driver
Typical Efficiency > 60% (ILOAD = 100 mA) - see
SLUU471
Differential Output exceeds 2.1 V (54-Ω Load)
Low Bus Capacitance 10 pF (Maximum)
Fail-safe Receiver for Bus Open, Short, or Idle
50-kV/µs Typical Transient Immunity
Safety and Regulatory Approvals
– 4242 VPK Basic Insulation per DIN V VDE V
0884-10 and DIN EN 61010-1
– 2500 VRMS Isolation for 1 minute per UL 1577
– CSA Component Acceptance Notice 5A, IEC
60950-1 and IEC 61010-1 Standards
The galvanically isolated differential bus transceiver is
an integrated circuit designed for bi-directional data
communication on multipoint bus-transmission lines.
The transceiver combines a galvanically isolated
differential line driver and differential input line
receiver. The driver has an active-high enable with
isolated enable-state output on the ISODE pin (pin
10) to facilitate direction control. The driver differential
outputs and the receiver differential inputs connect
internally to form a differential input/output (I/O) bus
port that is designed to offer minimum loading to the
bus whenever the driver is disabled or VCC2 = 0.
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 near-by sensitive circuitry if they are of
sufficient magnitude and duration. The ISO1176T can
significantly reduce the risk of data corruption and
damage to expensive control circuits.
The device is characterized for operation over the
ambient temperature range of –40°C to 85°C.
•
2 Applications
•
•
•
•
•
•
Profibus®
Factory Automation
Networked Sensors
Motor/motion Control
HVAC and Building Automation Networks
Networked Security Stations
Device Information(1)
PART NUMBER
BODY SIZE (NOM)
SOIC (16)
10.30 mm × 7.50 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Typical Application
X-FMR
3 Description
4
8
3
2
7
6
LDO
D1
1
C4 C5
3
2
C1
1
The ISO1176T is an isolated differential line
transceiver with integrated oscillator outputs that
provide the primary voltage for an isolation
transformer. The device is ideal for long transmission
lines because the ground loop is broken to allow the
device to operate with a much larger common-mode
voltage range.
The symmetrical isolation barrier of each device is
tested to provide 4242VPK of isolation per VDE for 60
seconds between the line transceiver and the logiclevel interface.
PACKAGE
ISO1176T
5
OUT
IN
5
C6
EN
GND
NC
4
D2
1
2
4
C2
3
5
6
Control
Circuitry
D1
VCC2
16
C3
Isolated Supply to
other Components
D2
VCC1
B
GND1
A
R
ISODE
13
12
10
Profibus
Interface
RE
7
DE
GND2
D
GND2
8
14, 15
9, 11
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.
ISO1176T
SLLSE28G – OCTOBER 2010 – REVISED OCTOBER 2015
www.ti.com
Table of Contents
1
2
3
4
5
6
Features ..................................................................
Applications ...........................................................
Description .............................................................
Revision History.....................................................
Pin Configuration and Functions .........................
Specifications.........................................................
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
6.9
6.10
6.11
6.12
6.13
7
1
1
1
2
4
4
Absolute Maximum Ratings ...................................... 4
ESD Ratings.............................................................. 5
Recommended Operating Conditions....................... 5
Thermal Information .................................................. 5
Electrical Characteristics: Power Rating ................... 5
Electrical Characteristics: ISODE-Pin ....................... 6
Electrical Characteristics: RS-485 Driver.................. 6
Electrical Characteristics: Receiver .......................... 7
Supply Current .......................................................... 7
Transformer Driver Characteristics ......................... 8
Switching Characteristics: RS-485 Driver ............... 9
Switching Characteristics: Receiver........................ 9
Typical Characteristics .......................................... 10
Parameter Measurement Information ................ 12
8
Detailed Description ............................................ 17
8.1
8.2
8.3
8.4
9
Overview .................................................................
Functional Block Diagram .......................................
Feature Description.................................................
Device Functional Modes........................................
17
17
18
20
Application and Implementation ........................ 23
9.1 Application Information............................................ 23
9.2 Typical Application ................................................. 23
10 Power Supply Recommendations ..................... 26
11 Layout................................................................... 26
11.1 Layout Guidelines ................................................. 26
11.2 Layout Example .................................................... 27
12 Device and Documentation Support ................. 28
12.1
12.2
12.3
12.4
12.5
Documentation Support ........................................
Community Resources..........................................
Trademarks ...........................................................
Electrostatic Discharge Caution ............................
Glossary ................................................................
28
28
28
28
28
13 Mechanical, Packaging, and Orderable
Information ........................................................... 28
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision F (October 2012) to Revision G
Page
•
Added Pin Configuration and Functions section, ESD Ratings 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
•
VDE standard changed to DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 ...................................................................... 1
•
Added Maximum Device Power Dissipation to Power Rating Table. .................................................................................... 5
Changes from Revision E (August 2011) to Revision F
•
Page
Changed From "ISO1176T Reference Design SLLU471" To: "ISO1176T Reference Design SLUU471"........................... 28
Changes from Revision D (May 2011) to Revision E
Page
•
Deleted the MIN and MAX values for tr_D, tf_D and tBBM specifications in the Transformer Driver Characteristics table. ....... 8
•
Changed test conditions from 1.9 V to 2.4 V, and changed TYP value from 230 to 350 for fSt specification in the
Transformer Driver Characteristics table................................................................................................................................ 8
Changes from Revision C (February 2011) to Revision D
Page
•
Added Figure 33 ..................................................................................................................................................................... 1
•
Moved the Pin Description closer to the Pin drawing............................................................................................................. 4
2
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Changes from Revision B (December 2010) to Revision C
Page
•
Deleted ROFF from the TRANSFORMER DRIVER CHARACTERISTICS table ..................................................................... 8
•
Added a Typ value of 23ns to Prop delay time for VCC1 = 5V in the RS-485 DRIVER SWITCHING
CHARACTERISTIC table ....................................................................................................................................................... 9
•
Added a Typ value of 25ns to Prop delay time for VCC1 = 3.3V in the RS-485 DRIVER SWITCHING
CHARACTERISTIC table ....................................................................................................................................................... 9
•
Changed θJA = 212°C/W To: θJA = 76°C/W, Changed the IS Max value From: 128mA To: 347mA, and changed
paragraph two in the IEC SAFETY LIMITING VALUES section .......................................................................................... 19
•
Changed Figure 29............................................................................................................................................................... 19
Changes from Revision A (December 2010) to Revision B
Page
•
Changed the Steady-state short-circuit output current - Test Conditions and values............................................................ 6
•
Changed the Oscillator frequency values............................................................................................................................... 8
•
Changed the D1, D2 output rise time values ......................................................................................................................... 8
Changes from Revision initial (October 2010) to Revision A
Page
•
Updated transformer driver characteristics............................................................................................................................. 8
•
Added Thermal Table data ................................................................................................................................................... 19
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SLLSE28G – OCTOBER 2010 – REVISED OCTOBER 2015
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5 Pin Configuration and Functions
DW Package
16-Pin SOIC
Top View
D1
D2
1
16
2
15
GND1
VCC1
R
RE
DE
D
3
4
14
13
5
12
6
11
7
10
8
9
VCC2
GND2
GND2
B
A
GND2
ISODE
GND2
Pin Functions
PIN
NAME
I/O
NO.
DESCRIPTION
A
12
I/O
Non-inverting Driver Output / Receiver Input
B
13
I/O
Inverting Driver Output / Receiver Input
D
8
I
Driver Input
D1
1
O
Transformer Driver Terminal 1, Open Drain Output
D2
2
O
Transformer Driver Terminal 2, Open Drain Output
DE
7
I
Driver Enable Input
GND1
3
—
Logic-side Ground
GND2
9, 11, 14, 15
—
Bus-side Ground. All pins are internally connected.
ISODE
10
O
Bus-side Driver Enable Output Status
R
5
O
Receiver Output
RE
6
I
Receiver Enable Input. This pin has complementary logic.
VCC1
4
—
Logic-side Power Supply
VCC2
16
—
Bus-side Power Supply
6 Specifications
6.1 Absolute Maximum Ratings
See
(1)
VCC1,
VCC2
Input supply voltage
(2)
Voltage at any bus I/O terminal
VO
MIN
MAX
UNIT
–0.5
7
V
–9
14
V
14
V
7
V
Voltage at D1, D2
VI
Voltage input at D, DE or RE terminal
–0.5
IO
Receiver output current
–10
10
mA
ID1, ID2 Transformer Driver Output Current
450
mA
TJ
Maximum junction temperature
170
°C
TSTG
Storage temperature
150
°C
(1)
(2)
4
–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 the referenced network ground terminal and are peak voltage
values.
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6.2 ESD Ratings
VALUE
V(ESD)
Electrostatic
discharge
Human body model (HBM), per ANSI/ESDA/JEDEC JS001 (1)
Bus pins to GND1
±6000
Bus pins to GND2
±10000
All pins
±4000
Charged-device model (CDM), per JEDEC specification JESD22-C101
(2)
V
±1500
Machine model (MM), 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.
6.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
MIN
Logic side supply voltage, VCC1 (with respect to GND1)
VCC
Bus side supply voltage, VCC2 (with respect to GND2)
VCM
Voltage at either bus I/O terminal
VIH
High-level input voltage
VIL
Low-level input voltage
VID
Differential input voltage
NOM
MAX
3
5.5
4.75
5.25
A, B
–7
12
RE
2
VCC1
D, DE
0
TA
Ambient temperature
TJ
Operating junction temperature
1 / tUI
Signaling Rate
V
V
0.8
D, DE
Output Current
V
0.7 VCC1
RE
IO
UNIT
V
0.3 VCC1
A with respect to B
–12
12
RS-485 driver
–70
70
–8
8
-40
85
Receiver
V
mA
°C
150
°C
40
Mbps
6.4 Thermal Information
ISO1176T
THERMAL METRIC (1)
DW (SOIC)
UNIT
16 PINS
RθJA
Junction-to-ambient thermal resistance
76
°C/W
RθJC(top)
Junction-to-case (top) thermal resistance
37.9
°C/W
RθJB
Junction-to-board thermal resistance
44.6
°C/W
ψJT
Junction-to-top characterization parameter
12.1
°C/W
ψJB
Junction-to-board characterization parameter
37.9
°C/W
(1)
For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
6.5 Electrical Characteristics: Power Rating
over operating free-air temperature range (unless otherwise noted)
PARAMETER
PD
Maximum device power dissipation
TEST CONDITIONS
VCC1 = 5.5 V, VCC2 = 5.25 V, TJ = 150°C, CL =
50 pf, RL = 54 Ω
Input a 20 MHz 50% duty cycle square wave
VALUE
UNIT
719
mW
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SLLSE28G – OCTOBER 2010 – REVISED OCTOBER 2015
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6.6 Electrical Characteristics: ISODE-Pin
over operating free-air temperature range (unless otherwise noted)
PARAMETER
VOH
High-level output voltage
VOL
Low-level output voltage
TEST CONDITIONS
MIN
TYP
IOH = –8mA
VCC2 – 0.8
4.6
IOH = –20µA
VCC2 – 0.1
5
MAX
UNIT
V
IOL = 8mA
0.2
0.4
IOL = 20µA
0
0.1
V
6.7 Electrical Characteristics: RS-485 Driver
over recommended operating conditions (unless otherwise noted)
PARAMETER
VOD
Open-circuit differential output voltage
|VOD(SS)|
Steady-state differential output voltage
magnitude
|ΔVOD(SS)|
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VCC2
V
|VA – VB|, See Figure 9
1.5
See Figure 10 and Figure 14
2.1
See Figure 11, Common-mode loading
with Vtest from –7 V to +12 V
2.1
Change in steady-state differential output
voltage between logic states
See Figure 12 and Figure 13, RL = 54 Ω
-0.2
0.2
VOC(SS)
Steady-state common-mode output
voltage
See Figure 12 and Figure 13, RL = 54 Ω
2
3
ΔVOC(SS)
Change in steady-state common-mode
output voltage
See Figure 12 and Figure 13, RL = 54 Ω
–0.2
0.2
VOC(pp)
Peak-to-peak common-mode output
voltage
See Figure 12 and Figure 13, RL = 54 Ω
VOD(ring)
Differential output voltage over and under
shoot
See Figure 14 and Figure 17
II
Input current
D, DE at 0 V or VCC1
IO(OFF)
Power-off output current
VCC2 = 0 V
IOZ
High-impedance output current
DE at 0 V
IOS(P)
Peak short-circuit output current
IOS(SS)
Steady-state short-circuit output current
COD
Differential output capacitance
CMTI
Common-mode transient immunity
6
See
Figure 16,
DE at VCC1
V
V
V
0.5
10%
–10
10
VOD(pp)
µA
See receiver input current
See receiver input current
VOS = –7 V to 12 V
–250
VOS = 12 V, D at GND1
VOS = –7 V, D at VCC1
250
135
–135
mA
mA
See receiver CIN
See Figure 27
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25
kV/µs
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6.8 Electrical Characteristics: Receiver
over recommended operating conditions (unless otherwise noted)
PARAMETER
VIT(+)
Positive-going input threshold voltage
VIT(–)
Negative-going input threshold voltage
Vhys
Hysteresis voltage (VIT+ – VIT–)
VOH
High-level output voltage
VOL
Low-level output voltage
VOH
High-level output voltage
VOL
Low-level output voltage
TEST CONDITIONS
See Figure 23
VCC1 = 3.3 V ± 10%
and VCC2 = 5 V ±
5%
IO = 8mA
VID = 200 mV,
See Figure 23
VID = –200 mV,
See Figure 23
VCC1 = 5 V ± 10%
and VCC2 = 5 V ±
5%
VID = 200 mV,
See Figure 23
VID = –200 mV,
See Figure 23
IA, IB
IA(off),
IB(off)
Bus pin input current
MIN
IO = –8mA
VI = –7 or 12 V, Other input = 0 V
–200
TYP
MAX
UNIT
–80
–10
mV
–120
mV
25
mV
IOH = –8 mA
VCC1 – 0.4
3
IOH = –20 µA
VCC1 – 0.1
3.3
V
IOL = 8 mA
0.2
0.4
IOL = 20 µA
0
0.1
IOH = –8 mA
VCC1 – 0.8
4.6
IOH = –20 µA
VCC1 – 0.1
5
V
IOL = 8 mA
0.2
0.4
IOL = 20 µA
0
0.1
VCC2 = 4.75 V
or 5.25 V
V
V
–160
200
µA
µA
VCC2 = 0 V
II
Receiver enable input current
RE = 0 V
–50
50
IOZ
High-impedance state output current
RE = VCC1
–1
1
RID
Differential input resistance
A, B
60
CID
Differential input capacitance
Test input signal is a 1-MHz sine wave with 1-Vpp
amplitude. CD is measured across A and B.
7
CMR
Common mode rejection
See Figure 26
4
µA
kΩ
10
pF
V
6.9 Supply Current
over operating free-air temperature range (unless otherwise noted)
PARAMETER
ICC1
(1)
ICC2 (1)
(1)
Logic-side quiescent supply
current
Bus-side quiescent supply current
TEST CONDITIONS
VCC1 = 3.3 V ± 10%, DE, RE = 0V or VCC1,
No load
VCC1 = 5 V ± 10%, DE, RE = 0V or VCC1, No
load
VCC2 = 5 V ± 5%, DE, RE = 0V or VCC1, No
load
MIN
TYP
MAX
UNIT
4.5
8
mA
7
11
mA
13.5
18
mA
ICC1 and ICC2 are measured when device is connected to external power supplies. D1 and D2 are disconnected from external
transformer.
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6.10 Transformer Driver Characteristics
over operating free-air temperature range (unless otherwise noted)
PARAMETER
fOSC
RON
tr_D
tf_D
fSt
tBBM
8
Oscillator frequency
Switch on resistance
D1, D2 output rise time
D1, D2 output fall time
Startup frequency
Break before make time delay
TEST CONDITIONS
MIN
TYP
MAX
VCC1 = 5 V ± 10%, D1 and D2 connected to
Transformer
350
450
610
VCC1 = 3.3 V ± 10%, D1 and D2 connected to
Transformer
300
400
550
D1 and D2 connected to 50Ω pullup resistors
1
2.5
VCC1 = 5 V ± 10%, See Figure 28, D1 and D2
connected to 50-Ω pullup resistors
80
VCC1 = 3.3 V ± 10%, See Figure 28, D1 and
D2 connected to 50-Ω pullup resistors
70
VCC1 = 5 V ± 10%, See Figure 28, D1 and D2
connected to 50-Ω pullup resistors
55
VCC1 = 3.3 V ± 10%, See Figure 28, D1 and
D2 connected to 50-Ω pullup resistors
80
VCC1 = 2.4 V, D1 and D2 connected to
Transformer
VCC1 = 3.3 V ± 10%, See Figure 28, D1 and
D2 connected to 50-Ω pullup resistors
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kHz
Ω
ns
ns
350
VCC1 = 5 V ± 10%, See Figure 28, D1 and D2
connected to 50-Ω pullup resistors
UNIT
kHz
38
ns
140
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6.11 Switching Characteristics: RS-485 Driver
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
See Figure 17
VCC1 = 5V ± 10%,
VCC2 = 5V ± 5%
23
35
ns
2
5
ns
25
40
ns
2
5
ns
tPLH, tPHL
Prop delay time
tsk(p)
Pulse skew (|tPHL – tPLH|)
tPLH, tPHL
Prop delay time
tsk(p)
Pulse skew (|tPHL – tPLH|)
See Figure 17
VCC1 = 3.3V ± 10%,
VCC2 = 5V ± 5%
tr
Differential output signal rise time
See Figure 17
2
3
7.5
ns
tf
Differential output signal fall time
See Figure 17
2
3
7.5
ns
tpDE
DE to ISODE prop delay
See Figure 21
30
ns
tt(MLH) , tt(MHL)
Output transition skew
See Figure 18
1
ns
tp(AZH), tp(BZH),
tp(AZL), tp(BZL)
Propagation delay, high-impedance-to-active
output
80
ns
tp(AHZ), tp(BHZ),
tp(ALZ), tp(BLZ)
Propagation delay, active-to-high-impedance
output
80
ns
| tp(AZL) – tp(BZH) |
| tp(AZH) – tp(BZL) |
Enable skew time
1.5
ns
t(CFB)
Time from application of short-circuit to
current fold back
See Figure 16
t(TSD)
Time from application of short-circuit to
thermal shutdown
See Figure 16, TA = 25°C
See Figure 19 and Figure 20,
CL = 50pf, RE at 0 V
0.55
0.5
µs
100
µs
6.12 Switching Characteristics: Receiver
over recommended operating conditions (unless otherwise noted)
PARAMETER
TYP
MAX
See Figure 23
VCC1 = 5 V ± 10%,
VCC2 = 5 V ± 5%
TEST CONDITIONS
50
65
ns
2
5
ns
See Figure 23
VCC1 = 3.3 V ± 10%,
VCC2 = 5 V ± 5%
53
70
ns
2
5
ns
Output signal rise time
2
4
ns
Output signal fall time
2
4
ns
13
25
ns
13
25
ns
13
25
ns
13
25
ns
tPLH, tPHL
Propagation delay time
tsk(p)
Pulse skew (|tPHL – tPLH|)
tPLH, tPHL
Propagation delay time
tsk(p)
Pulse skew (|tpHL - tpLH|)
tr
tf
tPZH
Propagation delay, high-impedance-to-highlevel output
tPHZ
Propagation delay, high-level-to-highimpedance output
tPZL
Propagation delay, high-impedance-to-lowlevel output
tPLZ
Propagation delay, low-level-to-highimpedance output
MIN
UNIT
DE at VCC1, See Figure 24
DE at VCC1, See Figure 25
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6.13 Typical Characteristics
90
35
No Load
TA = 25°C
30
ICC2 @ 5 V
80
RL = 54 W,
CL = 50 pF,
TA = 25°C
ICC - Supply Current - mA
ICC - Supply Current - mA
70
25
ICC2 @ 5 V
20
15
ICC1 @ 5 V
ICC1 @ 3.3 V
10
5
40
30
20
0
0
5
10
15
20
25
Data Rate - Mbps
30
35
40
Figure 1. RMS Supply Current (ICC1 and ICC2) vs Signaling
Rate With No Load
5
4
15
20
25
Data Rate - Mbps
30
35
40
15 pF Load
TA = 25°C
-89
-79
50 Ω
3
VCC2 = 4.75 V
2.5
2
1.5
-69
-59
-49
-39
-29
-19
1
0.5
-9
TA = 25 C
0
20
40
60
IL − Load Current − mA
1
0
80
1
2
3
4
5
VO - Output Voltage - V
Figure 3. Differential Output Voltage vs Load Current
Figure 4. Receiver High-Level Output Voltage Vs High-Level
Output Current
0.7
110
15 pF Load
TA = 25°C
100
VCC = 4.75 V
0.6
Driver Enable Skew − ns
90
80
70
60
50
40
30
20
0.5
VCC = 5.25 V
0.4
VCC = 5 V
0.3
0.2
0.1
10
0
10
100 Ω
IO - Output Current - mA
VCC2 = 5.25 V
3.5
0
0
-99
VCC2 = 5 V
4.5
0
1
2
3
VO - Output Voltage - V
4
0
−40
5
Figure 5. Receiver Low-Level Output Voltage vs Low-Level
Output Current
10
ICC1 @ 3.3 V
ICC1 @ 5 V
Figure 2. RMS Supply Current (ICC1 and ICC2) vs Signaling
Rate With Load
5
VOD − Differential Output Voltage − V
50
10
0
IO - Output Current - mA
60
RL = 110 Ω,
CL = 50 pF
−15
10
35
60
TA − Free-Air Temperature − °C
85
Figure 6. Driver Enable Skew vs Free-Air Temperature
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SLLSE28G – OCTOBER 2010 – REVISED OCTOBER 2015
Typical Characteristics (continued)
58
28
56
26
Receiver Propagation Delay - ns
Driver Propagation Delay - ns
tPHL (VCC1 = 3.3 V)
tPLH (VCC1 = 3.3 V)
24
22
tPHL (VCC1 = 5 V)
20
tPHL (VCC1 = 5 V)
54
CL = 15 pH,
VCC2 = 5 V
tPHL (VCC1 = 3.3 V)
tPLH (VCC1 = 3.3 V)
52
50
48
tPHL (VCC1 = 5 V)
46
tPLH (VCC1 = 5 V)
44
18
-40
-15
10
35
60
TA - Free-Air Temperature - °C
42
-40
85
Figure 7. Driver Propagation Delay vs Free-Air Temperature
-15
10
35
60
TA - Free-Air Temperature - °C
85
Figure 8. Receiver Propagation Delay vs Free-Air
Temperature
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11
ISO1176T
SLLSE28G – OCTOBER 2010 – REVISED OCTOBER 2015
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7 Parameter Measurement Information
VCC1
VCC1
IOA
DE
IOA
DE
A
A
II
0 or
VCC1
B
GND1
II
0 or
VCC1
VOD
D
IOB
GND2
B
GND2
GND1
VI
54 W
VOD
D
IOB
VI
VOA
VOB
GND1
VOB
GND2
GND 1
VOA
GND2
Figure 9. Open Circuit Voltage Test Circuit
Figure 10. VOD Test Circuit
VCC2
VCC1
IOA
RL
2
DE
DE
375 W
A
D
0 or 3 V
.
B
+
VOD
-
A
II
0 or
VCC1
60 W
VOD
D
- 7 V to12 V
B
GND1
RL
2
IOB
VI
375 W
GND2
GND2
VOB
GND1
Figure 11. Driver VOD with Common-mode
Loading Test Circuit
VOC
VOA
GND2
Figure 12. Driver VOD and VOC Without CommonMode Loading Test Circuit
VCC1
IOA
DE
RL
2
A
Input
Input
Generator : PRR = 500 kHz , 50 % duty
VI
cycle, t r < 6 ns , t f < 6 ns , ZO = 50 W
II
D
GND1
VOD
B
VOB
GND1
RL
2
IOB
GND2
VOA
A
VA
B
VB
VOC
VOC(p-p)
VOC
VOC (SS )
GND2
Figure 13. Steady-State Output Voltage Test Circuit and Voltage Waveforms
VOD(RING )
VOD (SS )
VOD ( pp)
0V differential
Figure 14. VOD(RING) Waveform and Definitions
12
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ISO1176T
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SLLSE28G – OCTOBER 2010 – REVISED OCTOBER 2015
VCC1
IOA
DE
A
0 or
VCC1
II
VI
V OD
B
D
IOB
GND 2
GND 1
V OA
V OB
GND 1
54 W
GND 2
Figure 15. Input Voltage Hysteresis Test Circuit
DE
250
Output Current - mA
IOS
A
D
IOS
B
+
V_
OS
GND1
GND2
135
60
t(CFB)
time
t(TSD)
Figure 16. Driver Short-Circuit Test Circuit and Waveforms (Short Circuit applied at Time t=0)
3V
DE
VCC1
A
D
Input
Generator
B
VI
VOD
R L = 54 W
±1 %
VI
C L = 50 pF
± 20%
VOD
C L includes fixture and
instrumentation capacitance
GND1
1.5 V
tpHL
tpLH
50 W
Generator: PRR= 500 kHz , 50 % duty
cycle, t r < 6ns , t f < 6 ns ,ZO = 50 W
1.5 V
90%
90%
0V
10 %
VOD(H)
0V
10%
VOD(L)
tf
tr
Figure 17. Driver Switching Test Circuit and Waveforms
DE
VCC1
A
50 %
D
Input
Generator
VI
RL= 54 W CL = 50pF
± 20%
±1%
B
50 W
GND1
Generator : PRR= 500 kHz, 50 % duty
cycle, t r< 6ns , t f
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