Nexperia

74LVC157A

Quad 2-input multiplexer

5.2. Pin description

Table 2. Pin description

Symbol

Pin

Description

S

1

common data select input

1I0

2

data input from source 0

1I1

3

data input from source 1

1Y

4

multiplexer output

2I0

5

data input from source 0

2I1

6

data input from source 1

2Y

7

multiplexer output

GND

8

ground (0 V)

3Y

9

multiplexer output

3I1

10

data input from source 1

3I0

11

data input from source 0

4Y

12

multiplexer output

4I1

13

data input from source 1

4I0

14

data input from source 0

E

15

enable input (active LOW)

VCC

16

supply voltage

6. Functional description

Table 3. Function table

H = HIGH voltage level; L = LOW voltage level; X = don’t care

Input

Output

E

S

nI0

nI1

nY

H

X

X

X

L

L

L

L

X

L

L

L

H

X

H

L

H

X

L

L

L

H

X

H

H

74LVC157A

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Product data sheet

Rev. 10 — 20 September 2021

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