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MM74HC138N Просмотр технического описания (PDF) - Fairchild Semiconductor

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Компоненты Описание
производитель
MM74HC138N
Fairchild
Fairchild Semiconductor Fairchild
MM74HC138N Datasheet PDF : 7 Pages
1 2 3 4 5 6 7
Truth Table
Inputs
Enable
Select
G1 G2 (Note 1) C B A
X
H
XXX
L
X
XXX
H
L
LLL
H
L
LLH
H
L
LHL
H
L
LHH
H
L
HL L
H
L
HLH
H
L
HH L
H
L
HHH
H = HIGH Level, L = LOW Level, X = don’t care
Note 1: G2 = G2A+G2B
Logic Diagram
Outputs
Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7
HHHHHHHH
HHHHHHHH
L HHHHHHH
H L HHHHHH
HH LHHHHH
HHH LHHHH
HHHH L HHH
HHHHH LHH
HHHHHH LH
HHHHHHH L
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