MC74HC157ADR2G

Product Overview

• Category: Integrated Circuit (IC)
• Use: Data Selector/Multiplexer
• Characteristics: High-Speed CMOS Logic, Quad 2-Input Multiplexer
• Package: SOIC-16
• Essence: This IC is designed to select one of four data inputs and route it to a single output line.
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 15 ns (typical)
• Maximum Quiescent Current: 4µA at 5.5V
• Maximum Output Current: ±25mA

Pin Configuration

The MC74HC157ADR2G has a total of 16 pins arranged as follows:

__ __ A1 | 1 16 | VCC B1 | 2 15 | Y C1 | 3 14 | A D1 | 4 13 | B G1 | 5 12 | C G2 | 6 11 | D Y1 | 7 10 | GND Y2 | 8 9 | GND --------

Functional Features

• Quad 2-Input Multiplexer: Allows selection of one out of four data inputs.
• High-Speed CMOS Logic: Provides fast switching times and low power consumption.
• Wide Supply Voltage Range: Can operate with a supply voltage between 2V and 6V.
• Low Quiescent Current: Consumes minimal power when not actively switching.

Advantages and Disadvantages

Advantages: - Fast switching times due to high-speed CMOS logic. - Low power consumption during operation. - Wide supply voltage range allows for flexibility in different applications.

Disadvantages: - Limited to selecting one out of four data inputs, may not be suitable for applications requiring more inputs. - Propagation delay time may affect timing-sensitive applications.

Working Principles

The MC74HC157ADR2G operates as a quad 2-input multiplexer. It selects one of the four data inputs (A, B, C, or D) based on the control inputs (G1 and G2) and routes it to the output pin (Y). The selection is made by activating the appropriate control inputs, which enable the corresponding data input to pass through to the output.

Detailed Application Field Plans

The MC74HC157ADR2G can be used in various applications that require data selection or multiplexing. Some potential application fields include:

1. Digital Communication Systems: Used for signal routing and data selection in communication systems such as routers and switches.
2. Industrial Automation: Enables selection of different sensor inputs in automated systems for monitoring and control purposes.
3. Audio/Video Switching: Allows selection of different audio or video sources in multimedia devices like TVs and home theater systems.
4. Data Acquisition Systems: Used to select and route analog or digital signals from multiple sensors or sources to a central processing unit.

Detailed and Complete Alternative Models

Some alternative models to the MC74HC157ADR2G include:

1. SN74HC157N: Similar quad 2-input multiplexer IC with DIP-16 package.
2. CD74HC157E: Quad 2-input multiplexer IC with wider supply voltage range and PDIP-16 package.
3. 74HCT157: Quad 2-input multiplexer IC with TTL-compatible inputs and SOIC-16 package.

These alternative models offer similar functionality but may have differences in characteristics, package types, or voltage compatibility.

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