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Quad 2-Input Multiplexer IC - 74HC157

Quad 2-Input Multiplexer IC - 74HC157

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  • Expand any data input point
  • Multiplex dual data buses
  • Generate four functions of two variables (one variable is common)
  • Source programmable counters

Quad 2-Input Multiplexer IC - 74HC157

The 74HC Series 74HC157 is a 16-Pin Quad 2-Input Multiplexer IC having 2V to 6V Operating Voltage range with 1uA Low Input current and high noise immunity. It selects 4 bits of data from two sources under the control of a common data select input (S). The enable input (E) is active LOW. When E is HIGH, all of the outputs (1Y to 4Y) are forced LOW regardless of all other input conditions.

Pinout:

Pinout of 74HC157 IC

Pin Number

Pin Name

Description

2,5,11,14

Input A

This is the first input line of the 2:1 Multiplexer

3,6,10,13

Input B

This is the second input line of the 2:1 Multiplexer

4,7,9,12

Output Y

This is the output line pin of the Multiplexer

1

Line Select (S)

The select pin selects one of the two input lines and gives it to the output line

15

Enable (E)

Active low pin. Grounded for normal operation

8

Ground

Connected to the ground of the system

16

Vcc

This pin powers the IC, typically +5V is used.



Also check 74LS161 Synch 4-Bit Counter. It has an operating voltage range of 4.5V to 5.5V and a temperature range of -55°C to +125°C
Also check 74HC151 IC74HC151 - 8-Input Multiplexer IC), used as a Data Selector/Multiplexer with full on-chip decoding to select one of eight data sources based on a unique three-binary code at select inputs

Package Includes:

  • 1 x IC - 74HC157

Specifications:

Type DIP
Voltage Rating 2 to 6V
Current Rating 1µA low input current
Temperature Rating -55 to 125 Deg C
Number of pins 16
Noise Immunity NIL = 30%, NIH = 30% of VCC at VCC = 5V
Dimensions 7x5x3mm
Weight 2g

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ADDITIONAL RESOURCES

1.What is 74HC157?

  • The 74HC157 (74HCT157) is a high-speed Si-gate CMOS device that is pin compatible with Low-power Schottky TTL. The 74HC/HCT157 is frequently used to transfer data between two groups of registers and four common output buses.

2.Is IC 74157 multiplexer?

  • The 74HC157 is a two-input (2:1) multiplexer integrated circuit. Because it contains four similar multiplexers, it is known as a Quad package 2-Input Multiplexer. As we know, a Multiplexer accepts two or more inputs and selects one of them as the output based on the Select line status.