DS88C120 Datasheet, PDF (8/10 Pages) National Semiconductor (TI) – Dual CMOS Compatible Differential Line Receiver

Application Hints (Continued)
Balanced RS-422 Fail-Safe
TL F 5801 – 13
TL F 5801–14
TL F 5801 – 15
Truth Table (For Balanced Fail-Safe)
Input
0
1
X
0
1
X
Strobe
1
1
1
0
0
0
A-OUT
0
1
0
1
1
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
TL F 5801 – 16
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