Texas Instruments
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SN74LS251D
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SN74LS251D

Product Overview

Category

SN74LS251D belongs to the category of integrated circuits (ICs).

Use

It is commonly used in digital logic applications for data multiplexing and selection.

Characteristics

  • Low power consumption
  • High-speed operation
  • Wide operating voltage range
  • Compatibility with TTL logic levels

Package

SN74LS251D is available in a 16-pin dual in-line package (DIP).

Essence

The essence of SN74LS251D lies in its ability to efficiently multiplex and select data signals in digital systems.

Packaging/Quantity

SN74LS251D is typically packaged in tubes or reels, with quantities varying based on customer requirements.

Specifications

  • Supply Voltage: 4.75V to 5.25V
  • Operating Temperature Range: -40°C to +85°C
  • Input Voltage High Level (VIH): 2.0V (min)
  • Input Voltage Low Level (VIL): 0.8V (max)
  • Output Voltage High Level (VOH): 2.7V (min)
  • Output Voltage Low Level (VOL): 0.5V (max)

Detailed Pin Configuration

  1. A0
  2. A1
  3. A2
  4. GND
  5. B
  6. C
  7. D
  8. E
  9. F
  10. G
  11. H
  12. I
  13. J
  14. K
  15. L
  16. VCC

Functional Features

SN74LS251D offers the following functional features:

  • Data selection and multiplexing capability
  • Active-low enable input for easy control
  • Multiple inputs for versatile data routing options
  • High-speed operation for efficient data processing

Advantages and Disadvantages

Advantages

  • Low power consumption makes it suitable for battery-powered devices
  • Wide operating voltage range allows compatibility with various systems
  • High-speed operation enables efficient data processing

Disadvantages

  • Limited number of input and output pins may restrict complex data routing scenarios
  • Not suitable for applications requiring high-density integration

Working Principles

SN74LS251D operates based on the principles of digital logic. It uses a combination of multiplexers and logic gates to select and route data signals according to the control inputs.

Detailed Application Field Plans

SN74LS251D finds applications in various fields, including:

  1. Data communication systems
  2. Industrial automation
  3. Consumer electronics
  4. Automotive electronics
  5. Medical equipment

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to SN74LS251D are:

  1. 74HC151
  2. CD4051
  3. MC14551
  4. 74F151

These alternatives can be considered based on specific application requirements and availability.

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Перелічіть 10 типових запитань і відповідей, пов’язаних із застосуванням SN74LS251D у технічних рішеннях

Sure! Here are 10 common questions and answers related to the application of SN74LS251D:

  1. Question: What is SN74LS251D?
    Answer: SN74LS251D is a multiplexer/demultiplexer IC (Integrated Circuit) that can be used in various technical solutions.

  2. Question: What is the purpose of SN74LS251D?
    Answer: SN74LS251D is used to select one of multiple input signals and route it to a single output line.

  3. Question: How many inputs does SN74LS251D have?
    Answer: SN74LS251D has 8 input lines.

  4. Question: How many output lines does SN74LS251D have?
    Answer: SN74LS251D has 1 output line.

  5. Question: What is the voltage range supported by SN74LS251D?
    Answer: SN74LS251D supports a voltage range of 4.75V to 5.25V.

  6. Question: Can SN74LS251D be used for both multiplexing and demultiplexing?
    Answer: Yes, SN74LS251D can be used as both a multiplexer and a demultiplexer.

  7. Question: What is the maximum frequency at which SN74LS251D can operate?
    Answer: SN74LS251D can operate at a maximum frequency of 33 MHz.

  8. Question: Does SN74LS251D require any external components for operation?
    Answer: Yes, SN74LS251D requires external resistors and capacitors for proper operation.

  9. Question: Can SN74LS251D be cascaded to increase the number of inputs?
    Answer: Yes, multiple SN74LS251D ICs can be cascaded together to increase the number of inputs.

  10. Question: What are some common applications of SN74LS251D?
    Answer: SN74LS251D is commonly used in data multiplexing, address decoding, and signal routing applications.

Please note that these answers are general and may vary depending on the specific implementation and requirements of your technical solution.