CD74HC253M Datasheet, PDF (2/14 Pages) Texas Instruments – High-Speed CMOS Logic Dual 4-Input Multiplexer

CD74HC253, CD74HCT253
Functional Diagrams
2OE
2I₃
2I₂
2I₁
2I₀
S₀
S₁
15
13
12
11
10
14
2
1I₀
6
1I₁
5
1I₂
4
1I₃
3
1OE
1
2OE
2OE
16
V_CC
8
GND
P
N
2OE
2OE
9
2Y
1OE
1OE
N
P
1OE
1OE
7
1Y
TRUTH TABLE
SELECT INPUTS
(Note 1)
DATA INPUTS
OUTPUT
ENABLE OUTPUT
S1
S0
I₀
I₁
I₂
I₃
OE
Y
X
X
X
X
X
X
H
Z
L
L
L
X
X
X
L
L
L
L
H
X
X
X
L
H
L
H
X
L
X
X
L
L
L
H
X
H
X
X
L
H
H
L
X
X
L
X
L
L
H
L
X
X
H
X
L
H
H
H
X
X
X
L
L
L
H
H
X
X
X
H
L
H
H = High Voltage Level, L = Low Voltage Level, X = Don’t Care, Z = High Impedance (Off).
NOTE:
1. Select inputs S1 and S0 are common to both sections.
2