CD74HC151 Datasheet, PDF (2/7 Pages) Texas Instruments – High Speed CMOS Logic 8-Input Multiplexer

Functional Diagram
CD74HC151, CD74HCT151
4
I₀
3
I₁
2
I₂
1
I₃
15
I₄
14
I₅
13
I₆
12
I₇
11
S₀
10
S₁
9
S₂
7
E
5
Y
6
Y
GND = 8
V_CC = 16
TRUTH TABLE
SELECT INPUTS
DATA INPUTS
ENABLE
OUTPUT
S2
S1
S0
I0
I1
I2
I3
I4
I5
I6
I7
E
Y
Y
X
X
X
X
X
X
X
X
X
X
X
H
H
L
L
L
L
L
X
X
X
X
X
X
X
L
H
L
L
L
L
H
X
X
X
X
X
X
X
L
L
H
L
L
H
X
L
X
X
X
X
X
X
L
H
L
L
L
H
X
H
X
X
X
X
X
X
L
L
H
L
H
L
X
X
L
X
X
X
X
X
L
H
L
L
H
L
X
X
H
X
X
X
X
X
L
L
H
L
H
H
X
X
X
L
X
X
X
X
L
H
L
L
H
H
X
X
X
H
X
X
X
X
L
L
H
H
L
L
X
X
X
X
L
X
X
X
L
H
L
H
L
L
X
X
X
X
H
X
X
X
L
L
H
H
L
H
X
X
X
X
X
L
X
X
L
H
L
H
L
H
X
X
X
X
X
H
X
X
L
L
H
H
H
L
X
X
X
X
X
X
L
X
L
H
L
H
H
L
X
X
X
X
X
X
H
X
L
L
H
H
H
H
X
X
X
X
X
X
X
L
L
H
L
H
H
H
X
X
X
X
X
X
X
H
L
L
H
NOTE: H = High Voltage Level, L = Low Voltage Level, X = Don’t Care
2