ON Semiconductor
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MC74AC157D
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MC74AC157D

Product Overview

Category

MC74AC157D belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in digital electronic systems for data multiplexing and selection purposes.

Characteristics

  • High-speed operation
  • Low power consumption
  • Wide operating voltage range
  • Compatibility with TTL logic levels
  • Schmitt trigger inputs for noise immunity

Package

MC74AC157D is available in a 16-pin dual in-line package (DIP).

Essence

The essence of MC74AC157D lies in its ability to efficiently handle data multiplexing and selection tasks in digital circuits.

Packaging/Quantity

This IC is typically packaged in reels or tubes, with quantities varying depending on the manufacturer's specifications.

Specifications

  • Supply Voltage: 2V to 6V
  • Input Voltage: 0V to VCC
  • Output Voltage: 0V to VCC
  • Operating Temperature Range: -40°C to +85°C
  • Propagation Delay Time: 5 ns (max)
  • Output Current: ±24 mA

Detailed Pin Configuration

  1. A Input 1
  2. B Input 1
  3. C Input 1
  4. D Input 1
  5. GND (Ground)
  6. Y Output 1
  7. Y Output 2
  8. Y Output 3
  9. Y Output 4
  10. C Input 2
  11. B Input 2
  12. A Input 2
  13. Enable Input
  14. VCC (Supply Voltage)
  15. Select Input
  16. GND (Ground)

Functional Features

  • Data multiplexing and selection: MC74AC157D allows for the selection of one out of four data inputs based on the select input.
  • Enable control: The enable input enables or disables the data selection process.
  • Schmitt trigger inputs: These inputs provide noise immunity and ensure reliable operation in noisy environments.

Advantages

  • High-speed operation allows for efficient data processing.
  • Low power consumption makes it suitable for battery-powered devices.
  • Wide operating voltage range provides flexibility in various applications.
  • Compatibility with TTL logic levels ensures compatibility with existing digital systems.
  • Schmitt trigger inputs enhance noise immunity, improving overall system reliability.

Disadvantages

  • Limited number of data inputs (four) may restrict its use in complex systems requiring more inputs.
  • Propagation delay time may introduce timing issues in certain high-speed applications.

Working Principles

MC74AC157D operates based on the principle of data multiplexing and selection. It takes multiple data inputs and selects one of them based on the select input. The enable input controls the activation of the selection process. The outputs provide the selected data to the connected circuitry.

Detailed Application Field Plans

MC74AC157D finds applications in various digital electronic systems, including but not limited to: - Data multiplexers - Digital signal processors - Communication systems - Microcontrollers - Industrial automation systems

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to MC74AC157D are: - 74HC157 - CD74HC157 - SN74LS157 - CD40157

These models offer similar functionality and can be used interchangeably depending on specific requirements.

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10 domande e risposte comuni relative all'applicazione di MC74AC157D nelle soluzioni tecniche

Sure! Here are 10 common questions and answers related to the application of MC74AC157D in technical solutions:

  1. Q: What is MC74AC157D? A: MC74AC157D is a quad 2-input multiplexer with 3-state outputs, commonly used in digital logic circuits.

  2. Q: What is the operating voltage range for MC74AC157D? A: The operating voltage range for MC74AC157D is typically between 2V and 6V.

  3. Q: What is the maximum output current that MC74AC157D can handle? A: MC74AC157D can handle a maximum output current of 24mA.

  4. Q: Can MC74AC157D be used for level shifting applications? A: Yes, MC74AC157D can be used for level shifting applications as it supports both TTL and CMOS logic levels.

  5. Q: How many inputs does MC74AC157D have? A: MC74AC157D has four inputs, labeled A, B, C, and D.

  6. Q: What is the purpose of the 3-state outputs in MC74AC157D? A: The 3-state outputs allow multiple MC74AC157D devices to be connected together without causing conflicts on the shared bus.

  7. Q: What is the propagation delay of MC74AC157D? A: The propagation delay of MC74AC157D is typically around 5ns.

  8. Q: Can MC74AC157D be used in high-speed applications? A: Yes, MC74AC157D is designed for high-speed operation and can be used in applications requiring fast switching times.

  9. Q: Is MC74AC157D compatible with other logic families? A: MC74AC157D is compatible with both TTL and CMOS logic families, making it versatile for use in various systems.

  10. Q: What is the package type for MC74AC157D? A: MC74AC157D is available in a 16-pin SOIC (Small Outline Integrated Circuit) package.

Please note that these answers are general and may vary depending on the specific datasheet and manufacturer's specifications for MC74AC157D.