DS75176B Datasheet, PDF (6/8 Pages) National Semiconductor (TI) – Multipoint RS-485/RS-422 Transceivers

Function Tables
DS75176B Transmitting
Inputs
RE DE
DI
X
1
1
X
1
0
X
0
X
X
1
X
Line
Condition
No Fault
No Fault
X
Fault
Outputs
DO DO
0
1
1
0
Z
Z
Z
Z
DS75176B Receiving
Inputs
Outputs
RE
DE
RI-RI
RO
0
0
≥ +0.2V
1
0
0
≤ −0.2V
0
0
0
Inputs Open**
1
1
0
X
Z
X — Don’t care condition
Z — High impedance state
Fault — Improper line conditons causing excessive power dissipation in the driver, such as shorts or bus contention
situations
**This is a fail safe condition
Typical Application
00875911
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