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MC74ACT257DG
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MC74ACT257DG

Product Overview

Category

MC74ACT257DG belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in digital logic applications.

Characteristics

  • High-speed operation
  • Low power consumption
  • Wide operating voltage range
  • Compatibility with TTL inputs
  • Output drive capability: 24 mA

Package

MC74ACT257DG is available in a standard 16-pin SOIC (Small Outline Integrated Circuit) package.

Essence

The essence of MC74ACT257DG lies in its ability to perform multiplexing functions in digital systems.

Packaging/Quantity

MC74ACT257DG is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

  • Supply Voltage Range: 4.5V to 5.5V
  • Input Voltage Range: 0V to VCC
  • Operating Temperature Range: -40°C to +85°C
  • Logic Family: ACT
  • Number of Inputs: 2
  • Number of Outputs: 4

Detailed Pin Configuration

  1. A0 (Input)
  2. A1 (Input)
  3. G (Input)
  4. Y0 (Output)
  5. Y1 (Output)
  6. Y2 (Output)
  7. Y3 (Output)
  8. VCC (Power supply)
  9. B0 (Input)
  10. B1 (Input)
  11. C (Input)
  12. Y0 (Output)
  13. Y1 (Output)
  14. Y2 (Output)
  15. Y3 (Output)
  16. GND (Ground)

Functional Features

MC74ACT257DG is a quad 2-input multiplexer with 3-state outputs. It allows for the selection of one of four data inputs and routes it to the output based on the control inputs. The 3-state outputs provide high impedance when disabled, allowing multiple devices to be connected to a common bus.

Advantages and Disadvantages

Advantages

  • High-speed operation enables efficient data processing.
  • Low power consumption helps in reducing energy usage.
  • Wide operating voltage range provides flexibility in various applications.
  • Compatibility with TTL inputs allows for easy integration into existing systems.
  • Output drive capability of 24 mA ensures reliable signal transmission.

Disadvantages

  • Limited number of inputs and outputs may restrict certain complex applications.
  • Lack of built-in protection features may require additional circuitry for robustness.

Working Principles

MC74ACT257DG operates based on the principles of digital multiplexing. It uses control inputs to select one of the four data inputs and routes it to the corresponding output. The 3-state outputs allow for high impedance when disabled, preventing conflicts on shared buses.

Detailed Application Field Plans

MC74ACT257DG finds applications in various digital systems, including but not limited to: - Data multiplexing in microcontrollers and microprocessors - Address decoding in memory systems - Input/output expansion in embedded systems - Signal routing in communication devices

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to MC74ACT257DG are: - SN74ACT257: Manufactured by Texas Instruments - CD74ACT257: Manufactured by Texas Instruments - 74ACT257: Manufactured by Fairchild Semiconductor

These alternative models can be considered based on specific requirements and availability.

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قم بإدراج 10 أسئلة وإجابات شائعة تتعلق بتطبيق MC74ACT257DG في الحلول التقنية

Sure! Here are 10 common questions and answers related to the application of MC74ACT257DG:

  1. Q: What is MC74ACT257DG? A: MC74ACT257DG 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 MC74ACT257DG? A: The operating voltage range for MC74ACT257DG is typically between 4.5V and 5.5V.

  3. Q: How many inputs does MC74ACT257DG have? A: MC74ACT257DG has four inputs, labeled A0, A1, A2, and A3.

  4. Q: Can MC74ACT257DG handle both analog and digital signals? A: No, MC74ACT257DG is designed to handle only digital signals.

  5. Q: What are the output states of MC74ACT257DG? A: The outputs of MC74ACT257DG can be in one of three states: high (logic 1), low (logic 0), or high impedance (disconnected).

  6. Q: How many select inputs does MC74ACT257DG have? A: MC74ACT257DG has two select inputs, labeled S0 and S1.

  7. Q: What is the purpose of the select inputs in MC74ACT257DG? A: The select inputs determine which input is connected to the output. The combination of S0 and S1 determines the active input.

  8. Q: Can MC74ACT257DG drive heavy loads directly? A: No, MC74ACT257DG has limited current sourcing/sinking capabilities. It is recommended to use a buffer or driver if driving heavy loads.

  9. Q: What is the maximum frequency at which MC74ACT257DG can operate? A: MC74ACT257DG can typically operate at frequencies up to 100 MHz.

  10. Q: Can MC74ACT257DG be used in multiplexing applications? A: Yes, MC74ACT257DG is commonly used in multiplexing applications where multiple inputs need to be selected and routed to a single output.

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