Datasheet

Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
DI
DE
3V
Y
Z
C
L1
C
L2
R
DIFF
V
ID
OUTPUT
UNDER TEST
500Ω
S1
S2
V
CC
C
L
Figure 7. Driver Timing Test Circuit Figure 8. Driver Enable/Disable Timing Test Load
DI
3V
0V
Z
Y
V
O
0V
-V
O
V
O
1.5V
t
PLH
1/2 V
O
10%
t
R
90%
90%
t
PHL
1.5V
1/2 V
O
10%
t
F
V
DIFF
= V (Y) - V (Z)
V
DIFF
t
SKEW = |
t
PLH
- t
PHL |
OUTPUT NORMALLY LOW
OUTPUT NORMALLY HIGH
3V
0V
Y, Z
V
OL
Y, Z
0V
1.5V 1.5V
V
OL
+0.5V
V
OH
-0.5V
2.3V
2.3V
t
ZL(SHDN)
, t
ZL
t
LZ
t
ZH(SHDN)
, t
ZH
t
HZ
DE
Figure 9. Driver Propagation Delays Figure 10. Driver Enable and Disable Times (except
MAX3081/MAX3084/MAX3087)
V
OH
V
OL
A
B
1V
-1V
1.5V 1.5V
OUTPUT
INPUT
RO
t
PLH
t
PHL
OUTPUT NORMALLY LOW
OUTPUT NORMALLY HIGH
3V
0V
V
CC
RO
RO
0V
1.5V 1.5V
V
OL
+ 0.5V
V
OH
- 0.5V
1.5V
1.5V
t
ZL(SHDN)
, t
ZL
t
LZ
t
ZH(SHDN)
, t
ZH
t
HZ
RE
Figure 11. Receiver Propagation Delays Figure 12. Receiver Enable and Disable Times (except
MAX3081/MAX3084/MAX3087)
MAX3080–MAX3089
16
Maxim Integrated