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74HC251D,653
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74HC251D,653

Product Overview

Category

The 74HC251D,653 belongs to the category of integrated circuits (ICs).

Use

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

Characteristics

  • High-speed operation
  • Low power consumption
  • Wide operating voltage range
  • Compatibility with TTL levels
  • Schmitt-trigger action on all inputs

Package

The 74HC251D,653 is available in a small outline package (SO) with 16 pins.

Essence

The essence of this product lies in its ability to efficiently multiplex and demultiplex data signals in digital systems.

Packaging/Quantity

The 74HC251D,653 is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

  • Supply voltage: 2V to 6V
  • Input voltage: 0V to VCC
  • Output voltage: 0V to VCC
  • Operating temperature range: -40°C to +125°C
  • Propagation delay: 11 ns (typical)
  • Maximum quiescent current: 4µA

Detailed Pin Configuration

The 74HC251D,653 has 16 pins arranged as follows:

  1. A0 (Input)
  2. A1 (Input)
  3. A2 (Input)
  4. GND (Ground)
  5. Y0 (Output)
  6. Y1 (Output)
  7. Y2 (Output)
  8. Y3 (Output)
  9. Y4 (Output)
  10. Y5 (Output)
  11. Y6 (Output)
  12. Y7 (Output)
  13. OE (Output Enable)
  14. S (Select)
  15. VCC (Supply Voltage)
  16. NC (No Connection)

Functional Features

The 74HC251D,653 offers the following functional features:

  • Data multiplexing and demultiplexing
  • Selectable output enable (OE) for tri-state outputs
  • Schmitt-trigger action on all inputs for improved noise immunity
  • Wide operating voltage range allows compatibility with various digital systems

Advantages and Disadvantages

Advantages

  • High-speed operation enables efficient data processing
  • Low power consumption helps in reducing overall system energy requirements
  • Compatibility with TTL levels ensures seamless integration with existing digital circuits
  • Schmitt-trigger action on inputs enhances noise immunity, resulting in reliable data transmission

Disadvantages

  • Limited number of input/output channels compared to some other ICs
  • Relatively higher propagation delay may impact real-time applications

Working Principles

The 74HC251D,653 works based on the principles of multiplexing and demultiplexing. It takes multiple input signals and selects one of them based on the select (S) input. The selected signal is then routed to the corresponding output pin. The output enable (OE) input allows the outputs to be tri-stated when not in use.

Detailed Application Field Plans

The 74HC251D,653 finds applications in various fields, including:

  1. Digital communication systems
  2. Data acquisition systems
  3. Industrial automation
  4. Consumer electronics
  5. Automotive electronics

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the 74HC251D,653 are:

  1. SN74HC251N
  2. CD74HC251E
  3. MC74HC251N
  4. TC74HC251AP

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

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací 74HC251D,653 v technických řešeních

Sure! Here are 10 common questions and answers related to the application of 74HC251D,653:

  1. Q: What is the 74HC251D,653? A: The 74HC251D,653 is a multiplexer/demultiplexer IC (Integrated Circuit) that can be used to select one of eight data inputs and route it to a single output.

  2. Q: What is the purpose of using a multiplexer/demultiplexer in a technical solution? A: Multiplexers/demultiplexers are used to save pins on microcontrollers or other devices by allowing multiple signals to share a single input/output line.

  3. Q: How many data inputs can the 74HC251D,653 handle? A: The 74HC251D,653 can handle up to eight data inputs.

  4. Q: Can the 74HC251D,653 be used as both a multiplexer and a demultiplexer? A: Yes, the 74HC251D,653 can be used as both a multiplexer and a demultiplexer depending on how it is configured.

  5. Q: What is the maximum voltage the 74HC251D,653 can handle? A: The 74HC251D,653 can handle a maximum voltage of 6 volts.

  6. Q: How does the 74HC251D,653 select which input to route to the output? A: The 74HC251D,653 has control inputs that allow you to select which input to route to the output based on the binary value applied to these control inputs.

  7. Q: Can the 74HC251D,653 be cascaded to handle more than eight inputs? A: Yes, multiple 74HC251D,653 ICs can be cascaded together to handle more than eight inputs.

  8. Q: What is the power supply voltage range for the 74HC251D,653? A: The power supply voltage range for the 74HC251D,653 is typically between 2 volts and 6 volts.

  9. Q: Can the 74HC251D,653 be used in both digital and analog applications? A: No, the 74HC251D,653 is designed for digital applications and may not provide accurate results in analog applications.

  10. Q: Are there any specific precautions to consider when using the 74HC251D,653? A: It is important to ensure that the power supply voltage does not exceed the maximum specified value and to avoid exceeding the maximum input current ratings to prevent damage to the IC.

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