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SN74HC251DE4
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SN74HC251DE4

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: Efficiently selects one of eight data inputs based on control signals
  • Packaging/Quantity: Tape and reel packaging, 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)

Detailed Pin Configuration

The SN74HC251DE4 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: Control input 0
  12. S1: Control input 1
  13. S2: Control input 2
  14. OE: Output enable
  15. VCC: Power supply
  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.
  • Multiple control inputs allow for versatile data selection.
  • Output enable pin allows for easy control of output state.

Advantages and Disadvantages

Advantages: - High-speed operation enables quick data selection. - Low-power consumption prolongs battery life in portable devices. - Wide supply voltage range accommodates different power sources. - Multiple control inputs provide flexibility in data selection. - Compact SOIC package saves board space.

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

Working Principles

The SN74HC251DE4 is a data selector/multiplexer IC that efficiently selects one of eight data inputs based on control signals. The control inputs (S0, S1, S2) determine which input is connected to the output (Y). The output enable (OE) pin controls the output state. When OE is low, the selected input is passed to the output. When OE is high, the output is in a high-impedance state.

Detailed Application Field Plans

The SN74HC251DE4 can be used in various applications, including but not limited to:

  1. Data routing and switching systems
  2. Communication equipment
  3. Industrial automation
  4. Automotive electronics
  5. Consumer electronics
  6. Medical devices
  7. Test and measurement instruments
  8. Robotics

Detailed and Complete Alternative Models

  1. CD74HC251E: Similar 8-input multiplexer IC from Texas Instruments.
  2. MC74HC251N: 8-input multiplexer IC from ON Semiconductor.
  3. 74HC251D: 8-input multiplexer IC from NXP Semiconductors.
  4. SN54HC251J: 8-input multiplexer IC from Texas Instruments (through-hole package).

These alternative models offer similar functionality and can be considered as substitutes for the SN74HC251DE4.

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Sebutkan 10 pertanyaan dan jawaban umum terkait penerapan SN74HC251DE4 dalam solusi teknis

Sure! Here are 10 common questions and answers related to the application of SN74HC251DE4 in technical solutions:

  1. Q: What is SN74HC251DE4? A: SN74HC251DE4 is a multiplexer/demultiplexer integrated circuit (IC) 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 SN74HC251DE4? A: The voltage supply range for SN74HC251DE4 is typically between 2V and 6V.

  3. Q: How many inputs does SN74HC251DE4 have? A: SN74HC251DE4 has 8 inputs, labeled A0 to A7.

  4. Q: Can SN74HC251DE4 be used as a demultiplexer? A: Yes, SN74HC251DE4 can be used as both a multiplexer and a demultiplexer.

  5. Q: What is the output configuration of SN74HC251DE4? A: SN74HC251DE4 has a single output, labeled Y.

  6. Q: What is the maximum operating frequency of SN74HC251DE4? A: The maximum operating frequency of SN74HC251DE4 is typically around 50 MHz.

  7. Q: How can I control the selection of inputs in SN74HC251DE4? A: The selection of inputs in SN74HC251DE4 can be controlled using the select inputs, labeled S0 and S1.

  8. Q: Can SN74HC251DE4 handle analog signals? A: No, SN74HC251DE4 is a digital IC and can only handle digital signals.

  9. Q: What is the output voltage level of SN74HC251DE4? A: The output voltage level of SN74HC251DE4 is typically the same as the supply voltage.

  10. Q: Can I cascade multiple SN74HC251DE4 ICs together? A: Yes, you can cascade multiple SN74HC251DE4 ICs together to increase the number of inputs or outputs in your circuit.

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