Texas Instruments
Зображення може бути репрезентативним.
Деталі продукту див. у специфікаціях.
SN74HC251PWT
Переглянути деталі Таблиці даних

SN74HC251PWT

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Data Selector/Multiplexer
  • Characteristics: High-speed, low-power, 8-input multiplexer
  • Package: TSSOP-16 (Thin Shrink Small Outline Package)
  • Essence: Efficiently selects one of eight data inputs based on control signals
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Supply Voltage Range: 2V to 6V
  • Input Voltage Range: 0V to VCC
  • Output Voltage Range: 0V to VCC
  • Operating Temperature Range: -40°C to +85°C
  • Propagation Delay Time: 10 ns (typical)
  • Quiescent Current: 4 µA (maximum)

Detailed Pin Configuration

The SN74HC251PWT has a total of 16 pins. The pin configuration is as follows:

  1. A0: Data Input 0
  2. A1: Data Input 1
  3. A2: Data Input 2
  4. A3: Data Input 3
  5. A4: Data Input 4
  6. A5: Data Input 5
  7. A6: Data Input 6
  8. A7: Data Input 7
  9. GND: Ground
  10. Y: Multiplexed Output
  11. S0: Select Input 0
  12. S1: Select Input 1
  13. E: Enable Input
  14. NC: No Connection
  15. VCC: Supply Voltage
  16. NC: No Connection

Functional Features

  • High-speed operation allows for efficient data selection.
  • Low-power consumption makes it suitable for battery-powered devices.
  • Wide supply voltage range provides flexibility in various applications.
  • Enables the selection of one out of eight data inputs based on control signals.

Advantages and Disadvantages

Advantages: - High-speed operation ensures quick data selection. - Low-power consumption extends battery life in portable devices. - Wide supply voltage range allows for versatile applications. - Compact TSSOP-16 package saves board space.

Disadvantages: - Limited to 8-input multiplexing, may not be suitable for larger-scale applications. - Propagation delay time may affect real-time applications with strict timing requirements.

Working Principles

The SN74HC251PWT is a data selector/multiplexer IC that operates based on control signals. The select inputs (S0 and S1) determine which data input (A0-A7) is connected to the output (Y). When the enable input (E) is high, the selected data input is passed through to the output. The IC operates at high speed and low power, making it ideal for applications requiring efficient data selection.

Detailed Application Field Plans

The SN74HC251PWT finds applications in various fields, including:

  1. Digital communication systems
  2. Data acquisition systems
  3. Industrial automation
  4. Automotive electronics
  5. Consumer electronics
  6. Medical equipment
  7. Robotics
  8. Instrumentation

In these fields, the IC is used for data routing, signal multiplexing, and selecting specific data sources based on control signals.

Detailed and Complete Alternative Models

  1. CD4051B: 8-channel analog multiplexer/demultiplexer IC
  2. 74HC151: 8-input multiplexer IC
  3. CD74HC4067: 16-channel analog multiplexer/demultiplexer IC
  4. 74HC153: Dual 4-input multiplexer IC
  5. CD74HC257: Quad 2-input multiplexer IC

These alternative models provide similar functionality to the SN74HC251PWT and can be used as substitutes in various applications.

Word count: 383 words

Перелічіть 10 типових запитань і відповідей, пов’язаних із застосуванням SN74HC251PWT у технічних рішеннях

Sure! Here are 10 common questions and answers related to the application of SN74HC251PWT:

  1. Q: What is SN74HC251PWT? A: SN74HC251PWT is a multiplexer/demultiplexer IC (Integrated Circuit) that can be used to select one of multiple input signals and route it to a single output.

  2. Q: What is the voltage supply range for SN74HC251PWT? A: The voltage supply range for SN74HC251PWT is typically between 2V and 6V.

  3. Q: How many inputs does SN74HC251PWT have? A: SN74HC251PWT has 8 inputs, labeled A0 to A7.

  4. Q: Can SN74HC251PWT be used as a demultiplexer? A: Yes, SN74HC251PWT can be used as both a multiplexer and a demultiplexer.

  5. Q: What is the maximum operating frequency of SN74HC251PWT? A: The maximum operating frequency of SN74HC251PWT is typically around 50 MHz.

  6. Q: How many control inputs does SN74HC251PWT have? A: SN74HC251PWT has two control inputs, labeled G1 and G2.

  7. Q: Can SN74HC251PWT handle analog signals? A: No, SN74HC251PWT is a digital IC and can only handle digital signals.

  8. Q: What is the output configuration of SN74HC251PWT? A: SN74HC251PWT has a single output, labeled Y.

  9. Q: Can SN74HC251PWT be cascaded to increase the number of inputs? A: Yes, multiple SN74HC251PWT ICs can be cascaded together to increase the number of inputs.

  10. Q: What is the package type for SN74HC251PWT? A: SN74HC251PWT is available in a TSSOP (Thin Shrink Small Outline Package) package type.

Please note that these answers are general and may vary depending on the specific datasheet and manufacturer's specifications for SN74HC251PWT.