74VHC138 데이터 시트보기 (PDF) - Fairchild Semiconductor
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74VHC138 Datasheet PDF : 7 Pages
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Truth Table
Inputs
Outputs
E1 E2 E3 A0 A1 A2 O0 O1 O2 O3 O4 O5 O6 O7
HX X X X X HHHHHHHH
X HX X X X HHHHHHHH
XX L XXXHHHHHHHH
L
L
H
L
L
L
L
HH
H
H
H
H
H
L
L
H
H
L
L
H
L
H
H
H
H
H
H
L
L
H
L
H
L
HH
L
H
H
H
H
H
L
L
H
H
H
L
HHH
L
H
H
H
H
L
L
H
L
L
H
HHH
H
L
H
H
H
L
L
H
H
L
H
HHH
H
H
L
H
H
L
L
H
L
H
H
HHH
H
H
H
L
H
L
L
H
H
H
H
HHH
H
H
H
H
L
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
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