NXP USA Inc.
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N74F257AD,623
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N74F257AD,623

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Data Selector/Multiplexer
  • Characteristics: High-speed, low-power consumption
  • Package: DIP-16 (Dual In-line Package with 16 pins)
  • Essence: Logic IC for data selection and multiplexing
  • Packaging/Quantity: Available in reels of 2500 units

Specifications

  • Logic Family: N74F
  • Logic Type: TTL (Transistor-Transistor Logic)
  • Number of Inputs: 2
  • Number of Outputs: 1
  • Supply Voltage: 4.5V to 5.5V
  • Operating Temperature Range: -40°C to +85°C
  • Propagation Delay: 6 ns (typical)
  • Output Current: ±24 mA
  • Power Dissipation: 500 mW

Detailed Pin Configuration

The N74F257AD,623 has a total of 16 pins arranged as follows:

__ __ A1 -| 1 16 |- VCC B1 -| 2 15 |- Y A2 -| 3 14 |- B B2 -| 4 13 |- A GND -| 5 12 |- C G1 -| 6 11 |- G2 GND -| 7 10 |- GND Y1 -| 8 9 |- Y2 ¯¯ ¯¯

Functional Features

  • The N74F257AD,623 is a quad 2-input multiplexer with non-inverting outputs.
  • It allows the selection of one of the four data inputs to be routed to a single output.
  • The selection is controlled by two enable (G) inputs, which determine the active input.

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data selection and multiplexing. - Low-power consumption makes it suitable for battery-powered devices. - Wide operating temperature range enables usage in various environments. - Compact DIP-16 package facilitates easy integration into circuit designs.

Disadvantages: - Limited number of inputs and outputs may restrict certain applications. - TTL logic family may have compatibility issues with other logic families. - Propagation delay of 6 ns may not be suitable for ultra-high-speed applications.

Working Principles

The N74F257AD,623 operates based on TTL logic principles. It uses transistors and resistors to implement the data selection and multiplexing functionality. When the enable (G) inputs are appropriately set, the selected data input is passed through to the output without any inversion.

Detailed Application Field Plans

The N74F257AD,623 can be used in various applications, including but not limited to: 1. Data routing and selection in digital systems. 2. Address decoding in memory circuits. 3. Input/output expansion in microcontrollers. 4. Signal switching in communication systems. 5. Multiplexing control in industrial automation.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the N74F257AD,623 include: - SN74LS157 - CD4051 - MC14051 - 74HC157

These alternatives can be considered based on specific requirements such as voltage levels, speed, power consumption, and package type.

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10个与N74F257AD,623在技术解决方案中的应用相关的常见问题及解答

Sure! Here are 10 common questions and answers related to the application of N74F257AD,623:

  1. Q: What is the N74F257AD,623? A: The N74F257AD,623 is a quad 2-input multiplexer with 3-state outputs. It is commonly used in digital logic circuits.

  2. Q: What is the purpose of a multiplexer? A: A multiplexer is used to select one of several input signals and route it to a single output line based on control inputs.

  3. Q: How many inputs does the N74F257AD,623 have? A: The N74F257AD,623 has four inputs, labeled A0, A1, A2, and A3.

  4. Q: How many output lines does the N74F257AD,623 have? A: The N74F257AD,623 has one output line, labeled Y.

  5. Q: Can the N74F257AD,623 handle both digital and analog signals? A: No, the N74F257AD,623 is designed to handle digital signals only.

  6. Q: What is the maximum voltage that the N74F257AD,623 can handle? A: The N74F257AD,623 can handle a maximum voltage of 5.5V.

  7. Q: How does the N74F257AD,623 select the input signal to be routed to the output? A: The N74F257AD,623 uses control inputs, labeled S0 and S1, to select the desired input signal.

  8. Q: Can the N74F257AD,623 drive multiple loads simultaneously? A: Yes, the N74F257AD,623 has 3-state outputs, which means it can drive multiple loads without causing conflicts.

  9. Q: What is the power supply voltage range for the N74F257AD,623? A: The N74F257AD,623 operates with a power supply voltage range of 4.5V to 5.5V.

  10. Q: Can the N74F257AD,623 be used in high-speed applications? A: Yes, the N74F257AD,623 is designed for high-speed operation and can be used in applications that require fast switching times.

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