Three-way RS NOR latch

199

01:52:01

The logic sources are, from top to bottom, A, B, C, and RST.
Q outputs match the parallel logic sources, so the outputs are, from top to bottom, QA, QB, and QC.
The truth table is below:

A   B   C     RST      QA    QB    QC
0   0   0        0       Hold Hold Hold 
1   0   0         0          1       0        0
0   1   0         0          0       1        0
1    1   0         X          0       0       0
0   0   1         0          0       0       1
1    0   1         X          0      0       0
0    1   1         X          0      0       0
1    1    1         X          0      0       0
X   X   X         1          0      0       0
(X means irrelevant)

published 4 years ago

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