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74ACT11257N
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Encyclopedia Entry: 74ACT11257N

Product Overview

Category

The 74ACT11257N belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in digital electronic systems for data multiplexing and demultiplexing applications.

Characteristics

  • The 74ACT11257N is a quad 2-input multiplexer with three-state outputs.
  • It operates on a wide voltage range, typically between 4.5V and 5.5V.
  • This IC offers high-speed performance, making it suitable for applications requiring fast data switching.
  • It has a low power consumption, making it energy-efficient.

Package

The 74ACT11257N is available in a standard 16-pin DIP (Dual In-line Package) format.

Essence

The essence of the 74ACT11257N lies in its ability to efficiently multiplex and demultiplex data signals in digital systems.

Packaging/Quantity

This IC is typically sold in reels or tubes containing multiple units. The exact quantity may vary depending on the supplier.

Specifications

  • Supply Voltage Range: 4.5V to 5.5V
  • Input Voltage Range: 0V to VCC
  • Output Voltage Range: 0V to VCC
  • Operating Temperature Range: -40°C to +85°C
  • Propagation Delay Time: 6ns (max)
  • Output Current: ±24mA

Detailed Pin Configuration

The 74ACT11257N has a total of 16 pins, each serving a specific function. The pin configuration is as follows:

  1. A0: Input A0
  2. B0: Input B0
  3. Y0: Output Y0
  4. GND: Ground
  5. A1: Input A1
  6. B1: Input B1
  7. Y1: Output Y1
  8. VCC: Supply Voltage
  9. A2: Input A2
  10. B2: Input B2
  11. Y2: Output Y2
  12. OE: Output Enable
  13. A3: Input A3
  14. B3: Input B3
  15. Y3: Output Y3
  16. NC: No Connection

Functional Features

  • The 74ACT11257N can select one of the four data inputs (A0-A3) and route it to the corresponding output (Y0-Y3) based on the control inputs (B0-B2).
  • It features three-state outputs, allowing the outputs to be effectively disconnected from the system when not in use.
  • The output enable (OE) pin controls the activation of the outputs, providing flexibility in data routing.

Advantages and Disadvantages

Advantages

  • High-speed performance enables efficient data switching.
  • Low power consumption contributes to energy efficiency.
  • Wide voltage range allows compatibility with various systems.
  • Three-state outputs provide flexibility in system design.

Disadvantages

  • Limited number of input/output channels compared to other multiplexer ICs.
  • Not suitable for applications requiring a higher level of integration.

Working Principles

The 74ACT11257N operates based on the principles of digital multiplexing and demultiplexing. It utilizes control inputs (B0-B2) to select one of the four data inputs (A0-A3) and routes it to the corresponding output (Y0-Y3). The output enable (OE) pin controls the activation of the outputs, allowing the system to disconnect them when not in use.

Detailed Application Field Plans

The 74ACT11257N finds application in various digital electronic systems, including but not limited to: - Data communication systems - Data acquisition systems - Multiplexed data buses - Address decoding circuits - Memory systems

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the 74ACT11257N are: - 74HC11257: Similar functionality, but operates at a lower voltage range (2V to 6V). - CD4051: Analog multiplexer/demultiplexer IC with similar pin configuration. - SN74LS157: Quad 2-line to 1-line data selector/multiplexer IC.

These alternative models offer similar functionalities and can be used as substitutes depending on specific system requirements.

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تکنیکی حل میں 74ACT11257N کے اطلاق سے متعلق 10 عام سوالات اور جوابات کی فہرست بنائیں

Sure! Here are 10 common questions and answers related to the application of 74ACT11257N in technical solutions:

  1. Q: What is the 74ACT11257N? A: The 74ACT11257N is a quad 2-input multiplexer with non-inverting outputs, commonly used in digital logic circuits.

  2. Q: What is the purpose of a multiplexer? A: A multiplexer is used to select one of several input signals and route it to a single output line.

  3. Q: How many inputs does the 74ACT11257N have? A: The 74ACT11257N has four inputs, labeled A0, A1, A2, and A3.

  4. Q: Can I use the 74ACT11257N as a demultiplexer? A: No, the 74ACT11257N is specifically designed as a multiplexer and cannot be used as a demultiplexer.

  5. Q: What is the voltage range supported by the 74ACT11257N? A: The 74ACT11257N operates with a voltage range of 2V to 6V.

  6. Q: How many output lines does the 74ACT11257N have? A: The 74ACT11257N has two output lines, labeled Y0 and Y1.

  7. Q: Can I cascade multiple 74ACT11257N chips together? A: Yes, you can cascade multiple 74ACT11257N chips to increase the number of input channels.

  8. Q: What is the propagation delay of the 74ACT11257N? A: The propagation delay of the 74ACT11257N is typically around 5 nanoseconds.

  9. Q: Is the 74ACT11257N compatible with TTL logic levels? A: Yes, the 74ACT11257N is designed to be compatible with both TTL and CMOS logic levels.

  10. Q: Can I use the 74ACT11257N in high-speed applications? A: Yes, the 74ACT11257N is capable of operating at high speeds, making it suitable for various applications including data routing and selection.

Please note that these answers are general and may vary depending on specific datasheet specifications and application requirements.