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74HC251N,652

74HC251N,652

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Data Selector/Multiplexer
  • Characteristics:
    • High-speed operation
    • Low power consumption
    • Wide operating voltage range
    • Multiple input/output options
  • Package: DIP-16 (Dual In-line Package with 16 pins)
  • Essence: The 74HC251N,652 is a multiplexer IC that allows the selection of one out of eight data inputs to be routed to a single output.
  • Packaging/Quantity: Available in tape and reel packaging, with 2,500 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 +125°C
  • Propagation Delay: 10 ns (typical)
  • Input Capacitance: 3.5 pF (typical)
  • Output Current: ±25 mA

Pin Configuration

The 74HC251N,652 has 16 pins arranged as follows:

+---+--+---+ S0 --|1 +--+ 16|-- VCC S1 --|2 15|-- GND S2 --|3 14|-- Y I0 --|4 13|-- I7 I1 --|5 12|-- I6 I2 --|6 11|-- I5 I3 --|7 10|-- I4 E --|8 9|-- G +----------+

Functional Features

  • The 74HC251N,652 is a 3-to-8 line data selector/multiplexer.
  • It allows the selection of one out of eight data inputs to be routed to the output based on the control inputs (S0, S1, and S2).
  • The enable input (E) controls the operation of the IC.
  • When E is low, the outputs are in a high-impedance state.
  • The G input is used for gating the outputs.

Advantages

  • High-speed operation allows for efficient data selection.
  • Low power consumption makes it suitable for battery-powered devices.
  • Wide operating voltage range provides flexibility in various applications.
  • Multiple input/output options offer versatility in circuit design.

Disadvantages

  • Limited to 3-to-8 line data selection/multiplexing, not suitable for larger-scale applications.
  • DIP-16 package may require additional space compared to surface-mount packages.

Working Principles

The 74HC251N,652 works by using the control inputs (S0, S1, and S2) to select one of the eight data inputs (I0 to I7) and route it to the output pin (Y). The enable input (E) controls the operation of the IC. When E is low, the outputs are disabled and put into a high-impedance state. The G input is used for gating the outputs, allowing for further control over the output signals.

Detailed Application Field Plans

The 74HC251N,652 can be used in various applications, including:

  1. Data multiplexing in digital systems
  2. Address decoding in memory circuits
  3. Input selection in microcontroller-based systems
  4. Signal routing in communication systems
  5. Control signal selection in industrial automation

Alternative Models

Some alternative models that provide similar functionality to the 74HC251N,652 include:

  1. CD74HC251E
  2. SN74HC251N
  3. MC74HC251N
  4. 74HCT251N

These models can be considered as alternatives based on their specifications, pin configuration, and functional features.

In conclusion, the 74HC251N,652 is a versatile data selector/multiplexer IC with high-speed operation, low power consumption, and multiple input/output options. It finds applications in various fields such as digital systems, memory circuits, and communication systems. While it has some limitations, there are alternative models available to suit specific requirements.

Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van 74HC251N,652 in technische oplossingen

Sure! Here are 10 common questions and answers related to the application of 74HC251N,652:

  1. Q: What is the 74HC251N,652? A: The 74HC251N,652 is a multiplexer/demultiplexer IC (Integrated Circuit) that allows you 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 74HC251N,652 handle? A: The 74HC251N,652 can handle up to eight data inputs.

  4. Q: Can the 74HC251N,652 be used as both a multiplexer and a demultiplexer? A: Yes, the 74HC251N,652 can function as both a multiplexer and a demultiplexer depending on how it is configured.

  5. Q: What is the maximum voltage the 74HC251N,652 can handle? A: The 74HC251N,652 can handle a maximum voltage of 6 volts.

  6. Q: How does the 74HC251N,652 select which data input to route to the output? A: The 74HC251N,652 has three select inputs (S0, S1, and S2) that determine which data input is selected.

  7. Q: Can the 74HC251N,652 be cascaded to handle more than eight data inputs? A: Yes, multiple 74HC251N,652 ICs can be cascaded together to handle more than eight data inputs.

  8. Q: What is the output voltage level of the 74HC251N,652? A: The output voltage level of the 74HC251N,652 is the same as the supply voltage.

  9. Q: Can the 74HC251N,652 be used in both digital and analog applications? A: No, the 74HC251N,652 is designed for digital applications and is not suitable for analog signals.

  10. Q: Are there any specific precautions to consider when using the 74HC251N,652? A: It is important to ensure that the power supply voltage does not exceed the maximum specified voltage (6V) to prevent damage to the IC. Additionally, proper decoupling capacitors should be used to minimize noise and ensure stable operation.

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