Test circuits and waveforms (continued) – Rainbow Electronics MAX13486E User Manual
Page 11
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MAX13485E/MAX13486E
Half-Duplex RS-485/RS-422 Transceivers in µDFN
__________________________________________________________________________
+1V
-1V
GENERATOR
V
ID
S3
S2
S1
1k
Ω
CL
15pF
50
Ω
V
CC
RO
RE
RE
RO
RE
RO
RO
RE
V
CC
/2
V
CC
V
CC
V
CC
V
OL
0
0
0
0
0
0
V
OH
V
OH
0.25V
0.25V
V
OH
/2
S1 OPEN
S2 CLOSED
S3 = +1V
S1 CLOSED
S2 OPEN
S3 = -1V
S1 OPEN
S2 CLOSED
S3 = +1V
S1 CLOSED
S2 OPEN
S3 = -1V
t
RZH
, t
RZH(SHDN)
t
RZL
, t
RZL(SHDN)
t
RLZ
t
RHZ
V
CC
/2
V
CC
/2
V
CC
(V
OL
+ V
CC
)/2
V
CC
V
CC
V
OL
V
CC
/2
Figure 8. Receiver Enable and Disable Times
Test Circuits and Waveforms (continued)
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