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74F381 データシートの表示（PDF） - Fairchild Semiconductor

部品番号
コンポーネント説明
メーカー
74F381
4-Bit Arithmetic Logic Unit
Fairchild
Fairchild Semiconductor Fairchild
74F381 Datasheet PDF : 9 Pages
1 2 3 4 5 6 7 8 9
Truth Table
Inputs
Outputs
Function
S0
S1
S2
Cn
An
Bn
F0
F1
F2
F3
G
P
CLEAR
L
L
L
X
X
X
L
L
L
L
L
L
L
L
L
H
H
H
H
H
L
L
L
H
L
H
H
H
L
L
L
H
L
L
L
L
L
H
H
B Minus A
H
L
L
L
H
H
H
H
H
H
H
L
H
L
L
L
L
L
L
H
L
H
L
H
H
H
H
H
L
L
H
H
L
H
L
L
L
H
H
H
H
H
L
L
L
L
H
L
L
L
L
H
H
H
H
H
L
L
L
H
L
L
L
L
H
H
L
H
L
L
H
H
H
L
L
A Minus B
L
H
L
L
H
H
H
H
H
H
H
L
H
L
L
L
L
L
L
H
L
H
L
H
H
L
L
L
H
H
H
H
L
H
H
H
H
L
L
H
H
H
L
L
L
L
H
L
L
L
L
L
L
L
L
H
H
L
L
H
H
H
H
H
H
L
L
H
L
H
H
H
H
H
L
A Plus B
H
H
L
L
H
H
L
H
H
H
L
L
H
L
L
H
L
L
L
H
H
H
L
H
L
L
L
L
H
L
H
H
L
L
L
L
L
H
L
H
H
H
H
H
H
H
L
L
X
L
L
L
L
L
L
H
H
X
L
H
H
H
H
H
H
H
A⊕B
L
L
H
X
H
L
H
H
H
H
H
L
X
H
H
L
L
L
L
L
L
X
L
L
L
L
L
L
H
H
X
L
H
H
H
H
H
H
H
A+B
H
L
H
X
H
L
H
H
H
H
H
H
X
H
H
H
H
H
H
H
L
X
L
L
L
L
L
L
L
L
X
L
H
L
L
L
L
H
H
AB
L
H
H
X
H
L
L
L
L
L
L
L
X
H
H
H
H
H
H
H
L
X
L
L
H
H
H
H
H
H
X
L
H
H
H
H
H
H
H
PRESET
H
H
H
X
H
L
H
H
H
H
H
H
X
H
H
H
H
H
H
H
L
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
3
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