Datasheet

ADM485
Rev. F | Page 11 of 16
SWITCHING CHARACTERISTICS
3
V
0V
B
A
0V
–V
O
+V
O
90% POINT
10% POINT
t
R
t
SKEW
= t
PLH
– t
PHL
1/2V
O
t
PLH
t
PHL
1.5V
1.5V
90% POINT
10% POINT
t
F
V
O
00078-026
Figure 26. Driver Propagation Delay, Rise/Fall Timing
DE
A
, B
A
, B
1.5V
2.3V
2.3V
t
ZH
t
ZL
1.5V
3
V
0V
V
OL
V
OH
0V
V
OL
+ 0.5V
V
OH
– 0.5V
t
HZ
t
LZ
00078-027
Figure 27. Driver Enable/Disable Timing
A, B
RO
0V
t
PLH
1.5V
0V
t
PHL
1.5V
V
OH
V
OL
t
SKEW
= t
PLH
– t
PHL
00078-028
Figure 28. Receiver Propagation Delay
RE
RO
RO
1.5V
1.5V
1.5V
t
ZH
t
ZL
1.5V
3
V
0V
V
OL
V
OH
V
OL
+ 0.5V
V
OH
– 0.5V
t
HZ
t
LZ
OUTPUT LOW
OUTPUT HIGH
0V
00078-029
Figure 29. Receiver Enable/Disable Timing