MAX13485E Datasheet, PDF (11/16 Pages) Maxim Integrated Products – Half-Duplex RS-485/RS-422 Transceivers in uDFN

Half-Duplex RS-485/RS-422 Transceivers in µDFN
Test Circuits and Waveforms (continued)
+1V
S3
-1V
V_ID
1kΩ
CL
15pF
S1
V_CC
S2
GENERATOR
50Ω
S1 OPEN
S2 CLOSED
S3 = +1V
V_CC
V_CC/2
RE
0
t_RZH, t_RZH(SHDN)
V_OH
RO
V_OH/2
0
S1 OPEN
S2 CLOSED
S3 = +1V
V_CC/2
RE
t_RHZ
RO
0.25V
V_CC
0
V_OH
0
Figure 8. Receiver Enable and Disable Times
RE
RO
RE
S1 CLOSED
S2 OPEN
S3 = -1V
V_CC/2
V_CC
0
t_RZL, t_RZL(SHDN)
V_CC
(V_OL + V_CC)/2
V_OL
S1 CLOSED
S2 OPEN
S3 = -1V
V_CC
V_CC/2
0
t_RLZ
V_CC
RO
0.25V
V_OL
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