HD74HCT137 데이터 시트보기 (PDF) - Renesas Electronics
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HD74HCT137 Datasheet PDF : 8 Pages
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HD74HCT137
Function Table
Inputs
Enable
Select
GL
G1
G2
C
B
A
X
X
H
X
X
X
X
L
X
X
X
X
L
H
L
L
L
L
L
H
L
L
L
H
L
H
L
L
H
L
L
H
L
L
H
H
L
H
L
H
L
L
L
H
L
H
L
H
L
H
L
H
H
L
L
H
L
H
H
H
H
H
L
X
X
X
H : High level
L : Low level
X : Irrelevant
Pin Arrangement
Outputs
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
L
Output Corresponding to stored address L; all Others. H
A1
B2
C3
GL 4
G2 5
G1 6
Y7 7
GND 8
B
A Y0
C
Y1
GL
Y2
G2
Y3
G1
Y4
Y7 Y6 Y5
(Top view)
16 VCC
15 Y0
14 Y1
13 Y2
12 Y3
11 Y4
10 Y5
9 Y6
Rev.2.00 Mar 30, 2006 page 2 of 7
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