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Low-Power, Slew-Rate-Limited
RS-485/RS-422 Transceivers
TTL IN
tR, tF < 6ns
D
R
100pF
B
100pF
A
RECEIVER
OUT
R = 54Ω
Z
Y
500mV/div
20ns/div
A
B
RO
2V/div
VCC = 5V
TA = +25°C
500mV/div
20ns/div
A
B
RO
2V/div
VCC = 5V
TA = +25°C
500mV/div
400ns/div
A
B
RO
2V/div
VCC = 5V
TA = +25°C
500mV/div
400ns/div
A
B
RO
2V/div
VCC = 5V
TA = +25°C
Figure 14. Receiver Propagation Delay Test Circuit
Figure 15. HWD481/HWD485/HWD490/HWD491/HWD487
Receiver tPHL
Figure 16. HWD481/HWD485/HWD490/HWD491/HWD1487
Receiver tPLH
Figure 17. HWD483, HWD487–HWD489 Receiver tPHL
Figure 18. HWD483, HWD487–HWD489 Receiver tPLH
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