74153.md

74153: dual 4-line multiplexer

• Type: multiplexer
• Number of elements: 2
• Inputs per element: 4
• Outputs per element: 1
• Bits: 2
• DIP: 16-pin

Description

This multiplexer forwards a 2-bit input from one of four sources to the output.

A high voltage on the enable input E ties the output to low voltage.

Inputs and outputs

Label	Description	Signal
S0	data select input 0	active high
S1	data select input 1	active high
OEn	enable input of element n	active low
An	source A input of element n	active high
Bn	source B input of element n	active high
Cn	source C input of element n	active high
Dn	source D input of element n	active high
Yn	output of element n	active high

Function table

OEn	S1	S0	An	Bn	Cn	Dn	Yn
H	X	X	X	X	X	X	L
L	L	L	L	X	X	X	L
L	L	L	H	X	X	X	H
L	L	H	X	L	X	X	L
L	L	H	X	H	X	X	H
L	H	L	X	X	L	X	L
L	H	L	X	X	H	X	H
L	H	H	X	X	X	L	L
L	H	H	X	X	X	H	H

• H: HIGH voltage level
• L: LOW voltage level
• X: don't care

Pin layout

Datasheets

• CD74HC153 by Texas Instruments
• 74HC153, 74HCT153 by Nexperia