MAX14840E 데이터 시트보기 (PDF) - Maxim Integrated
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MAX14840E Datasheet PDF : 15 Pages
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40Mbps, +3.3V, RS-485 Half-Duplex
Transceivers
Test and Timing Diagrams (continued)
+1.5V
S3
R
S1
-1.5V
1kI
VID R RO
VCC
S2
CL
15pF
RE
GENERATOR
50I
RE
RO
RE
1.5V
tRHZ
RO
0.25V
VCC
1.5V
tRZH, tRZH(SHDN) 0
S1 OPEN
S2 CLOSED
S3 = +1.5V
VOH
VCC
2
0
VCC S1 OPEN
S2 CLOSED
S3 = +1.5V
0
VOH
0
Figure 8. Receiver Enable and Disable Times
RE
tRZL, tRZL(SHDN)
RO
1.5V
RE
tRLZ
RO
0.25V
VCC
S1 CLOSED
1.5V
S2 OPEN
0 S3 = -1.5V
VCC
VCC
2
VOL
VCC S1 CLOSED
S2 OPEN
S3 = -1.5V
0
VCC
VOL
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