CD74HC147 Datasheet, PDF (2/6 Pages) Texas Instruments – High Speed CMOS Logic 10-to-4 Line Priority Encoder

CD74HC147, CD74HCT147
Functional Diagram
11
I1
12
I2
13
I3
1
I4
2
I5
3
I6
4
I7
5
I8
10
I9
9
Y0
7
Y1
6
Y2
14
Y3
GND = 8
V_CC = 16
TRUTH TABLE
INPUTS
OUTPUTS
I1
I2
I3
I4
I5
I6
I7
I8
I9
Y3
Y2
Y1
Y0
H
H
H
H
H
H
H
H
H
H
H
H
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
NOTE: H = High Logic Level, L = Low Logic Level, X = Don’t Care
2