74LS157 Quad 2 To 1 Line Multiplexer IC

74LS157 Quad 2 To 1 Line Multiplexer is a part of the 74XXYY IC series. The 74LS150 IC has a wide range of working voltage, a wide range of working conditions, and directly interfaces with CMOS, NMOS, and TTL. The output of the IC always comes in TTL which makes it easy to work with other TTL devices and microcontrollers. The IC also constitutes a wide array of features such as thermal overload protection & ESD protection. The IC 74LS157 is smaller in size and it has a much faster speed which makes it reliable in every kind of device.

What is a Multiplexer?
A multiplexer is a combinational logic circuit that switches one of several input lines to a single common output line. The select lines determine which input is connected to the output, and also to increase the amount of data that can be sent over a network within a certain time. It is also called a data selector.

74LS157 Pin Configuration

Pin No
Pin Name
Description

1
S
Common Select Input

2
I0a
Data Input Pin From Source 0

3
I1a
Data Input Pin From Source 1

4
Za
Multiplexer Output

5
I0b
Data Input Pin From Source 0

6
I1b
Data Input Pin From Source 1

7
Zb
Multiplexer Output

8
GND
Ground Pin

9
Zd
Multiplexer Output

10
I1d
Data Input Pin From Source 1

11
I0d
Data Input Pin From Source 0

12
Zc
Multiplexer Output

13
I1c
Data Input Pin From Source 1

14
I0c
Data Input Pin From Source 0

15
E’
Active Low Enable Pin

16
Vcc
Chip Supply Voltage

Applications

It is used to increase the efficiency of the communication system by allowing the transmission of data, such as audio & video data from different channels via cables and single lines.

You can download this Datasheet for 74LS157 Quad 2 To 1 Line Multiplexer from the link given below:

Download Datasheet