ADM485
SWITCHING CHARACTERISTICS
3V
1.5V
tPLH
1.5V
0V
B
tPHL
A, B
0V
0V
1/2V
O
V
O
tPLH
tPHL
A
tSKEW
= tPLH – tPHL
V
V
OH
OL
+V
0V
O
90% POINT
90% POINT
RO
1.5V
1.5V
tSKEW
= tPLH – tPHL
10% POINT
10% POINT
–V
O
tR
tF
Figure 28. Receiver Propagation Delay
Figure 26. Driver Propagation Delay, Rise/Fall Timing
3V
0V
3V
1.5V
1.5V
tZL
RE
DE
1.5V
tZL
1.5V
0V
tLZ
tLZ
1.5V
1.5V
RO
V
+ 0.5V
– 0.5V
2.3V
2.3V
OL
A, B
A, B
OUTPUT LOW
OUTPUT HIGH
V
V
+ 0.5V
OL
OH
V
OL
V
OL
tZH
tHZ
tZH
tHZ
V
V
OH
OH
– 0.5V
V
RO
0V
OH
0V
Figure 27. Driver Enable/Disable Timing
Figure 29. Receiver Enable/Disable Timing
Rev. F | Page 11 of 16
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