Datasheet
Vcc
GND
B
A
R
1
2
4 5
6
7
8
DE
3
U1
RE
DUT_VCC
R5
120 W
0V
0V
Receive
data
B
A
V
OD
0 W
R8
0 W
R9
Vcc
GND
B
A
D
R
1
2
45
6
7
8
DE
3
U1
RE
DUT_VCC
R5
120 W
5V
5V
B
A
0 W
R8
0 W
R9
D
Transmit
data
5V
PSU1
R
JMP3
1
2
VCC
3
4
JMP2
1
2
VCC
3
4
/RE
DE
JMP6
1
2
3
4
B
A
1
JMP11
2
3
1
2
3
TB1
GND
EARTH
VCC
HVD96
EVM1
1
2
3
TB2
Scope
Ch4 Ch3 Ch2 Ch1
B
A
5V
PSU2
5V
Signal
Generator
JMP4
1
2
VCC
3
4
D
JMP3
1
2
VCC
3
4
JMP2
1
2
VCC
3
4
/RE
DE
1
JMP14
2
3
1
2
3
TB1
GND
EARTH
VCC
HVD96
EVM2
1
2
3
TB2
B
A
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Powering up the EVM and Taking Measurements
Figure 9. Wire-fault Simulation Using two EVMs
Figure 10 illustrates the EVM configurations and the measurement set-up. The right evaluation module
(EVM2) is configured as the driver. Both, driver and receiver enable inputs, DE and RE, receive high
potential through the wire-bridges to VCC at JMP3 and JMP2. Note that EVM2 is turned by 180°.
EVM1 on the left is configured as the receiver. Here, the driver and receiver enable inputs receive low
potential through the wire-bridges to GND at JMP3 and JMP2.
Figure 10. EVM Configurations: Left as Receiver EVM, Right as Transmitter EVM
The input data signal entering EVM2 at JMP4 is measured on scope channel 1, probing the signal at
the D-input pin of JMP14. The cross-wiring of the bus wires occurs at the EVM interlink, between the
two TB2 terminal blocks. To proof wire-fault robustness, the differential receiver input and the
single-ended receiver output signals are measured after the cross-wiring. Channels 2 and 3 measure
the bus voltages, V
A
and V
B
, at pin 2 and pin 3 of JMP6, while the receiver output is taken from pin 1 at
JMP11. Note that both 5 V power supplies, PSU1 and PSU2 have their ground terminals connected to
the ground and Earth terminals of their respective EVMs.
The scope pictures for the individual examples are shown in Figure 11, Figure 12, and Figure 13.
Figure 14 and Figure 15 show the top and bottom view of the SN65HVD96 EVM.
7
SLLU128A–June 2010–Revised August 2010 Sympol™ Transceiver
Copyright © 2010, Texas Instruments Incorporated