ADM485
TEST CIRCUITS
VOD
R
R
VOC
Figure 20. Driver Voltage Measurement
375Ω
VOD3
60Ω
VTST
375Ω
Figure 21. Driver Voltage Measurement
A
CL1
RLDIFF
B
CL2
Figure 22. Driver Propagation Delay
0V OR 3V
DE IN
A
DE
B
VCC
RL
S1
S2
CL VOUT
Figure 23. Driver Enable/Disable
A
RE
B
VOUT
CL
Figure 24. Receiver Propagation Delay
+1.5V
S1
–1.5V
VCC
RL
RE
S2
CL VOUT
REIN
Figure 25. Receiver Enable/Disable
Rev. F | Page 10 of 16