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SN74HC251DRG4
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SN74HC251DRG4

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Data Selector/Multiplexer
  • Characteristics: High-speed, Low-power, 8-input Multiplexer
  • Package: SOIC (Small Outline Integrated Circuit)
  • Essence: A versatile multiplexer IC that allows selection of one out 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: 2 µA (maximum)

Pin Configuration

The SN74HC251DRG4 has a total of 16 pins. The pin configuration is as follows:

  1. GND (Ground)
  2. S0 (Select Input 0)
  3. S1 (Select Input 1)
  4. S2 (Select Input 2)
  5. I0 (Data Input 0)
  6. I1 (Data Input 1)
  7. I2 (Data Input 2)
  8. I3 (Data Input 3)
  9. I4 (Data Input 4)
  10. I5 (Data Input 5)
  11. I6 (Data Input 6)
  12. I7 (Data Input 7)
  13. E (Enable Input)
  14. Y (Multiplexed Output)
  15. Vcc (Positive Power Supply)
  16. GND (Ground)

Functional Features

  • 8-input multiplexer with common enable input
  • Selection of one data input from eight using select inputs
  • High-speed operation for quick data selection
  • Low-power consumption for energy efficiency
  • Wide supply voltage range for compatibility with various systems

Advantages and Disadvantages

Advantages: - Versatile multiplexer suitable for a wide range of applications - High-speed operation allows for efficient data selection - Low-power consumption helps in reducing overall system power requirements - Compact SOIC package enables space-saving integration

Disadvantages: - Limited to 8-input selection, may not be suitable for applications requiring more inputs - Propagation delay time may affect real-time applications with strict timing requirements

Working Principles

The SN74HC251DRG4 is a data selector/multiplexer IC that operates based on select inputs (S0, S1, S2) and an enable input (E). The select inputs determine which data input (I0-I7) is connected to the output (Y). When the enable input is high, the selected data input is passed through to the output. When the enable input is low, the output is in a high-impedance state.

Detailed Application Field Plans

The SN74HC251DRG4 can be used in various applications, including but not limited to: - Data routing and selection in digital systems - Address decoding in microcontrollers and memory devices - Multiplexing multiple data sources into a single output - Signal conditioning and switching in communication systems

Detailed and Complete Alternative Models

Some alternative models to SN74HC251DRG4 include: - CD4051B: 8-channel analog multiplexer/demultiplexer - 74HC151: 8-input multiplexer with inverted outputs - MC14051B: 8-channel analog multiplexer/demultiplexer with latch

These alternative models offer similar functionality and can be considered based on specific application requirements.

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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av SN74HC251DRG4 i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of SN74HC251DRG4 in technical solutions:

  1. Q: What is SN74HC251DRG4? A: SN74HC251DRG4 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 operating voltage range for SN74HC251DRG4? A: The operating voltage range for SN74HC251DRG4 is typically between 2V and 6V.

  3. Q: How many inputs does SN74HC251DRG4 have? A: SN74HC251DRG4 has 8 inputs, labeled A0 to A7.

  4. Q: Can SN74HC251DRG4 be used as a demultiplexer? A: Yes, SN74HC251DRG4 can be used as both a multiplexer and a demultiplexer.

  5. Q: What is the maximum frequency at which SN74HC251DRG4 can operate? A: SN74HC251DRG4 can operate at a maximum frequency of 50 MHz.

  6. Q: How many control inputs does SN74HC251DRG4 have? A: SN74HC251DRG4 has 3 control inputs, labeled G1, G2A, and G2B.

  7. Q: What is the purpose of the control inputs in SN74HC251DRG4? A: The control inputs are used to select the desired input channel and control the operation of the multiplexer/demultiplexer.

  8. Q: Can SN74HC251DRG4 be cascaded to increase the number of input channels? A: Yes, SN74HC251DRG4 can be cascaded to increase the number of input channels by connecting the output of one IC to the input of another.

  9. Q: What is the output configuration of SN74HC251DRG4? A: SN74HC251DRG4 has a single output with a standard logic level (high or low) depending on the selected input channel.

  10. Q: Can SN74HC251DRG4 be used in both digital and analog applications? A: SN74HC251DRG4 is primarily designed for digital applications, but it can also be used in certain analog applications where the signal levels are within its operating range.

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