Datasheet

7Maxim Integrated
40Mbps, +3.3V, RS-485 Half-Duplex
Transceivers
MAX14840E/MAX14841E
Test and Timing Diagrams (continued)
Figure 8. Receiver Enable and Disable Times
GENERATOR
50I
R
1kI
C
L
15pF
R
-1.5V
+1.5V
RO
S1
V
CC
S2
S3
V
ID
RE
RE
RO
RE
RO
RE
RE
RO
RO
0
t
RHZ
t
RLZ
0.25V
0.25V
1.5V 1.5V
0 0
2
S1 OPEN
S2 CLOSED
S3 = +1.5V
S1 OPEN
S2 CLOSED
S3 = +1.5V
S1 CLOSED
S2 OPEN
S3 = -1.5V
S1 CLOSED
S2 OPEN
S3 = -1.5V
V
OH
0
0
V
OH
V
CC
V
CC
V
CC
1.5V1.5V
V
CC
t
RZL
, t
RZL(SHDN)
V
OL
0
V
CC
V
CC
V
CC
V
OL
t
RZH,
t
RZH(SHDN)
2
V
CC