74HCT147N,652 查看數據表（PDF） - NXP Semiconductors.
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74HCT147N,652 Datasheet PDF : 7 Pages
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Philips Semiconductors
10-to-4 line priority encoder
Product specification
74HC/HCT147
Fig.4 Functional diagram.
FUNCTION TABLE
A0
H
A1
H
A2
H
A3
H
INPUTS
A4
H
A5
H
A6
H
A7
H
A8
H
Y3
H
OUTPUTS
Y2
H
Y1
H
Y0
H
X
X
X
X
X
X
X
X
L
L
H
H
L
X
X
X
X
X
X
X
L
H
L
H
H
H
X
X
X
X
X
X
L
H
H
H
L
L
L
X
X
X
X
X
L
H
H
H
H
L
L
H
X
X
X
X
L
H
H
H
H
H
L
H
L
X
X
X
L
H
H
H
H
H
H
L
H
H
X
X
L
H
H
H
H
H
H
H
H
L
L
X
L
H
H
H
H
H
H
H
H
H
L
H
L
H
H
H
H
H
H
H
H
H
H
H
L
Notes
1. H = HIGH voltage level
L = LOW voltage level
X = don’t care
December 1990
4
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