SN74HC42 decoders equivalent, 4-line to 10-line decoders.
as 3-Line to 8-Line
Decoders
SN54HC42 . . . FK PACKAGE (TOP VIEW)
VCC
NC
A
0
1
2
3 2 1 20 19
4
18
B
35
17 C
.
ordering information
These decimal decoders consist of eight inverters and ten 4-input NAND gates. The inverters are connected in pairs to make BCD input data available for decoding by the NAND gates. Full decoding of valid input logic ensures that a.
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