Datasheet

Data Sheet ADM2491E
Rev. C | Page 9 of 16
SWITCHING CHARACTERISTICS
1.5V1.5V
t
PLH
t
PHL
t
R
t
F
1/2V
OUT
V
OUT
90% POINT
10% POINT
90% POINT
10% POINT
t
PWD
= |t
PLH
– t
PHL
|
V
DD1
0V
Z
Y
V
OH
V
OL
Y, Z
TxD
06985-010
Figure 10. Driver Propagation Delay, Rise/Fall Timing
t
ZL
t
LZ
t
ZH
t
HZ
0.5V
DD1
0.5V
DD1
V
OL
+ 0.5V
V
OH
– 0.5V
2.3V
2.3V
DE
Y, Z
Y, Z
V
DD1
0V
V
OL
V
OH
0V
06985-011
Figure 11. Driver Enable/Disable Delay
A, B
RxD
0V 0V
1.5V 1.5V
t
PLH
t
PHL
V
OH
V
OL
06985-012
Figure 12. Receiver Propagation Delay
t
ZL
t
LZ
t
ZH
t
HZ
0.5V
DD1
0.5V
DD1
V
OL
+ 0.5V
V
OH
– 0.5V
1.5V
1.5V
RE
RxD
RxD
0V
V
DD1
0V
V
OL
V
OH
0V
06985-013
OUTPUT LOW
OUTPUT HIGH
Figure 13. Receiver Enable/Disable Delay