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Logic IC.

Part number	74LS157 Quad 2-to-1 Line Multiplexer
Category	Integrated Circuits › Logic Gates
Package	DIP-16
Pins	16

74LS157 Quad 2-to-1 Line Multiplexer pinout

Pin	Name	Type
1	S	input
2	I0a	input
3	I1a	input
4	Za	output
5	I0b	input
6	I1b	input
7	Zb	output
8	GND	ground
9	Zc	output
10	I1c	input
11	I0c	input
12	Zd	output
13	I1d	input
14	I0d	input
15	E	input
16	VCC	power

Schematic symbol and footprint

Schematic symbol

Footprint: DIP-16_W7.62mm — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.