HCF4556 데이터 시트보기 (PDF) - STMicroelectronics
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HCF4556 Datasheet PDF : 14 Pages
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LOGIC DIAGRAMS
4555B
HCC/HCF4555B/4556B
4556B
TRUTH TABLE
Inputs Enable Select
Outputs 4555B
E
B
A
Q3
Q2
Q1
Q0
0
0
0
0
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
0
1
1
1
0
0
0
1
X
X
0
0
0
0
X = DON’T CARE, LOGIC 1 = HIGH, LOGIC 0 = LOW.
Outputs 4556B
Q3
Q2
Q1
Q0
1
1
1
0
1
1
0
1
1
0
1
1
0
1
1
1
1
1
1
1
3/14
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