DS78C120 Datasheet, PDF (8/9 Pages) National Semiconductor (TI) – Dual CMOS Compatible Differential Line Receiver

Application Hints (Continued)
Balanced RS-422 Fail Safe
DS005801-13
Truth Table
DS005801-14
DS005801-15
(For Balanced Fail-Safe)
Input Strobe A-OUT
0
1
0
1
1
1
X
1
0
0
0
1
1
0
1
X
0
1
B-OUT
1
0
0
1
1
1
C-OUT
0
1
X
0
0
0
D-OUT
0
0
1
0
0
0
DS005801-16
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