The 74157 is a quad 2-input multiplexer IC containing four independent 2-to-1 digital multiplexers with common select and enable controls.

How many multiplexers are inside a 74157 IC?

The IC contains four independent 2-to-1 multiplexers.

What does a 2-to-1 multiplexer do?

A 2-to-1 multiplexer selects one of two digital input signals and routes the selected signal to an output according to a select control signal.

What package does the 74157 multiplexer IC use?

The product is specified in a 16-pin dual in-line package, commonly referred to as DIP-16.

What is the difference between 74HC157 and 74LS157?

Both devices perform the quad 2-input multiplexer function, but they belong to different logic families. 74HC157 uses CMOS logic technology, while 74LS157 uses Low-Power Schottky TTL technology, resulting in different electrical characteristics.

Can the 74HC157 be used with Arduino?

Yes. The 74HC157 can be used in Arduino-based digital logic and signal-selection projects when its supply voltage and input/output logic levels are compatible with the Arduino system.

Can the 74157 be used on a breadboard?

Yes. The DIP-16 package is well suited for breadboard prototyping and through-hole circuit development.

What are the applications of a 74157 multiplexer IC?

It can be used for digital data selection, signal routing, logic circuits, computer architecture experiments, control systems, Arduino interfaces and educational electronics.

Does the 74157 have four outputs?

Yes. The quad multiplexer contains four multiplexer channels, each providing one corresponding digital output.

74157 74HC157 74LS157 Quad 2-Input Multiplexer (DIP16) IC

Name: 74157 74HC157 74LS157 Quad 2-Input Multiplexer (DIP16) IC
Brand: KathalTech
SKU: 74157-74hc157-74ls157-quad-2-input-multiplexer-dip16-ic
Price: 46.00 BDT
Availability: InStock
Rating: 5.0 (1 reviews)

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৳46.00

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The 74157 / 74HC157 / 74LS157 Quad 2-Input Multiplexer DIP16 IC is a digital logic IC containing four independent 2-to-1 multiplexers. It allows a digital system to select one of two input signals for each channel using common select and enable controls, making it useful for signal routing, logic design, data selection, and digital electronics projects.

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Overview

74157 74HC157 74LS157 Quad 2-Input Multiplexer DIP16 IC

Simplify digital signal selection and routing with the 74157 / 74HC157 / 74LS157 Quad 2-Input Multiplexer IC. This versatile logic IC integrates four 2-to-1 multiplexer channels into a single 16-pin DIP package, allowing designers to select between two sets of digital input signals.

A common select input determines which input from each multiplexer channel is routed to the corresponding output. The device also provides an enable/strobe control, making it useful for building more flexible digital logic systems.

The DIP16 package is convenient for breadboard prototyping, educational electronics, circuit development, and through-hole PCB assembly. Depending on the exact IC family, electrical characteristics such as supply voltage, speed, and logic thresholds differ, so the specific part number should be matched to the circuit requirements.

It is a practical component for digital logic experiments, data routing, signal selection, multiplexing circuits, computer architecture projects, Arduino interface circuits, and electronics education.

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74157 / 74HC157 / 74LS157 Quad 2-Input Multiplexer

The 74157 family consists of quad 2-input multiplexer logic devices designed to select digital signals. The IC contains four separate 2-to-1 multiplexer sections, with all four channels controlled by a common select input.

Quad 2-to-1 Multiplexer

Each multiplexer channel has two digital inputs and one output. The common select signal determines which input is passed to the corresponding output.

This allows four separate pairs of digital signals to be selected simultaneously using a single IC.

Common Select and Enable

The device typically includes:

Two input sets for each of four channels
One common select input
One common enable/strobe control
Four corresponding digital outputs

This configuration makes the IC useful for selecting between multiple groups of digital data.

DIP16 Package

The 16-pin DIP package is convenient for breadboard experimentation, through-hole PCB assembly, and educational digital-logic projects. It can be easily inserted into standard DIP-compatible prototyping boards and sockets.

74157 vs 74HC157 vs 74LS157

Although these devices perform the same basic quad 2-input multiplexer function, the different logic families have different electrical characteristics.

74LS157 – Low-power Schottky TTL logic family.
74HC157 – High-speed CMOS logic family.
74157 – Original/standard 7400-series designation; exact electrical characteristics depend on the manufacturer and specific variant.

Always verify the exact part number and datasheet when mixing logic families or designing a circuit around specific voltage and timing requirements.

Applications

The IC can be used for:

Digital signal selection
Data routing
Logic circuits
Digital multiplexing
Computer architecture experiments
Address/data selection
Control systems
Arduino interface projects
Breadboard prototyping
Educational electronics
Custom digital circuits

Note: The exact operating voltage, input thresholds, output current, propagation delay, and other electrical specifications depend on whether the selected device is a 74LS157, 74HC157, or another 74157-family variant. Use the appropriate datasheet for the exact IC supplied.

Product Name	74157 / 74HC157 / 74LS157 Quad 2-Input Multiplexer IC
IC Function	Quad 2-Input Multiplexer
Number of Multiplexers	4
Inputs per Multiplexer	2
Package	DIP-16
Logic Type	Digital Logic
Select Input	Common Select Control
Enable Control	Common Enable / Strobe Control
Outputs	4 Digital Outputs
Applications	Digital Logic, Data Selection, Signal Routing, Multiplexing, Prototyping