ADM4850 AD [Analog Devices], ADM4850 Datasheet - Page 9

• Manufacturer Part Number: ADM4850
• Description: 5 V Slew-Rate Limited Half- and Full-Duplex RS-485/RS-422 Transceivers
• Manufacturer: AD [Analog Devices]

SWITCHING CHARACTERISTICS
3V
0V
5V
0V
A, B
VO
B
A
RO
10% POINT
1/2VO
90% POINT
Figure 10. Driver Propagation Delay, Rise/Fall Timing
t
PLH
0V
1.5V
Figure 11. Receiver Propagation Delay
t
R
1.5V
t
PLH
t
SKEW
t
SKEW
=
=
|t
PLH –
|t
PLH –
t
PHL
1.5V
t
PHL
|
t
|
PHL
0V
t
PHL
t
1.5V
F
90% POINT
10% POINT
V
V
OH
OL
Rev. 0 | Page 9 of 16
A, B
A, B
RE
0V
DE
R
R
Figure 13. Receiver Enable/Disable Timing
t
t
t
t
Figure 12. Driver Enable/Disable Timing
1.5V
ZL
ZH
1.5V
ZL
ZH
1.5V
1.5V
2.3V
2.3V
O/P HIGH
O/P LOW
ADM4850–ADM4857
t
t
t
t
HZ
LZ
LZ
HZ
1.5V
1.5V
V
V
V
V
OL
OH
OL
OH
+0.5V
+0.5V
–0.5V
–0.5V
3V
0V
3V
0V
V
V
V
V
OL
OH
OL
OH
0V