Datasheet

MAX13487E/MAX13488E
Half-Duplex RS-485-/RS-422-Compatible
Transceiver with AutoDirection Control
_______________________________________________________________________________________ 9
t
DZH(SHDN)
t
DZL(SHDN)
1.5V
2.3V
2.3V
OUTPUT NORMALLY HIGH
OUTPUT NORMALLY LOW
V
CC
V
CC
C
L
S
1
S
2
0
A, B
0
A, B
V
OL
SHDN
500Ω
OUTPUT
UNDER TEST
Figure 4. Driver Enable and Disable Times
V
ID
A
B
R
RECEIVER
OUTPUT
ATE
Figure 5. Receiver-Propagation-Delay Test Circuit
1.5V
1.5V
1V
-1V
f = 1MHz, t
LH
≤ 3ns, t
HL
≤ 3ns
t
RPHL
t
RSKEW
=
|
t
RPHL
- t
RPLH |
t
RPLH
V
OH
V
OL
RO
A
B
Figure 6. Receiver Propagation Delays
Test Circuits and Waveforms (continued)