Datasheet

6 Maxim Integrated
40Mbps, +3.3V, RS-485 Half-Duplex
Transceivers
MAX14840E/MAX14841E
Test and Timing Diagrams (continued)
Figure 5. Driver Enable and Disable Times (t
DLZ
, t
DZL
)
Figure 6. Receiver Propagation Delay Test Circuit
Figure 7. Receiver Propagation Delays
R
L =
110I
50I
OUT
0
0.25V
1.5V
t
DZL
, t
DZL(SHDN)
t
DLZ
DE
S1
A
B
D
DI
0 OR V
CC
V
CC
V
CC
1.5V
V
CC
OUT
V
OL
GENERATOR
DE
V
ID
B
A
RECEIVER
OUTPUT
ATE
R
A
B
V
OH
V
OL
RO
t
RPHL
t
RSKEW =
t
RPHL
- t
RPLH

f = 1MHz, t
LH
P 3ns, t
HL
P 3ns
t
RPLH
-1V
1V
2
V
CC
2
V
CC