Description: 74HC138 pin diagram: 74LS138-8 line, 3-wire decoder, the the total 54/74S138 and 54/74LS138 two line structure type, its working principle is as follows:
When a strobe terminal (G1) is high, the other two selected through the end of (/ (G2A,)/(G2B))
Low, the output of the binary encoding of the address side (A, B, C) in a corresponding side with low
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