Texas Instruments
Bild kan vara representation.
Se specifikationer för produktinformation.
CD74AC253M
Visa detalj Datablad

CD74AC253M

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Multiplexer/Demultiplexer
  • Characteristics: High-speed, low-power consumption
  • Package: 16-pin SOIC (Small Outline Integrated Circuit)
  • Essence: CD74AC253M is a multiplexer/demultiplexer IC that allows for the selection of one of four data inputs to be routed to a single output line.
  • Packaging/Quantity: Available in reels of 2500 units

Specifications

  • Supply Voltage: 2V - 6V
  • Operating Temperature: -40°C to +85°C
  • Propagation Delay: 5ns (typical)
  • Input Capacitance: 3pF (typical)
  • Output Current: ±24mA

Pin Configuration

The CD74AC253M has a total of 16 pins. The pin configuration is as follows:

  1. A0: Data Input A0
  2. B0: Data Input B0
  3. C0: Data Input C0
  4. D0: Data Input D0
  5. GND: Ground
  6. Y: Output
  7. E: Enable Input
  8. VCC: Supply Voltage
  9. A1: Data Input A1
  10. B1: Data Input B1
  11. C1: Data Input C1
  12. D1: Data Input D1
  13. NC: No Connection
  14. F: Select Input
  15. G1: Enable Input G1
  16. G2: Enable Input G2

Functional Features

  • CD74AC253M is a dual 4-input multiplexer with common select inputs (S0 and S1) and individual enable inputs (G1 and G2).
  • It can be used as a multiplexer or demultiplexer depending on the configuration of select inputs.
  • The output (Y) is determined by the combination of select inputs and data inputs.
  • The enable inputs (E, G1, G2) control the operation of the IC.

Advantages and Disadvantages

Advantages

  • High-speed operation allows for efficient data routing.
  • Low-power consumption makes it suitable for battery-powered devices.
  • Compact 16-pin SOIC package enables space-saving designs.
  • Wide supply voltage range provides flexibility in various applications.

Disadvantages

  • Limited number of input/output lines compared to other multiplexer/demultiplexer ICs.
  • Propagation delay may affect real-time applications with strict timing requirements.

Working Principles

CD74AC253M operates based on the principles of digital logic. The select inputs (S0 and S1) determine which data input (A0-D1) is connected to the output (Y). The enable inputs (E, G1, G2) control the overall operation of the IC. When properly configured, the selected data input is routed to the output line.

Detailed Application Field Plans

CD74AC253M finds applications in various fields where data routing and selection are required. Some potential application areas include:

  1. Data communication systems
  2. Multiplexing audio/video signals
  3. Industrial automation
  4. Instrumentation and measurement equipment
  5. Automotive electronics

Detailed and Complete Alternative Models

  1. CD74AC251: 8-input multiplexer with similar characteristics
  2. CD74AC257: Quad 2-input multiplexer with 3-state outputs
  3. CD74AC238: 3-to-8 line decoder/demultiplexer with similar characteristics

These alternative models offer different input/output configurations and functionalities while maintaining compatibility with CD74AC253M.

Word count: 413 words

Lista 10 Vanliga frågor och svar relaterade till tillämpningen av CD74AC253M i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of CD74AC253M in technical solutions:

  1. Q: What is CD74AC253M? A: CD74AC253M is a dual 4-input multiplexer with 3-state outputs, commonly used in digital logic circuits.

  2. Q: What is the purpose of CD74AC253M? A: CD74AC253M is used to select one of the four input signals and route it to the output based on control inputs.

  3. Q: What is the operating voltage range for CD74AC253M? A: CD74AC253M operates within a voltage range of 2V to 6V.

  4. Q: What is the maximum frequency at which CD74AC253M can operate? A: CD74AC253M can operate at a maximum frequency of 125 MHz.

  5. Q: How many control inputs does CD74AC253M have? A: CD74AC253M has two control inputs, typically labeled as S0 and S1.

  6. Q: Can CD74AC253M be cascaded to increase the number of inputs? A: Yes, CD74AC253M can be cascaded to increase the number of inputs by connecting the output of one multiplexer to the input of another.

  7. Q: What is the output configuration of CD74AC253M? A: CD74AC253M has 3-state outputs, which means the outputs can be actively driven high or low, or put into a high-impedance state.

  8. Q: What is the power supply current required for CD74AC253M? A: The power supply current for CD74AC253M typically ranges from 4 mA to 8 mA.

  9. Q: Can CD74AC253M be used in both digital and analog applications? A: No, CD74AC253M is primarily designed for digital applications and may not be suitable for analog applications.

  10. Q: What are some common applications of CD74AC253M? A: CD74AC253M is commonly used in data selectors, multiplexers, address decoding, and other digital logic circuits where signal routing is required.

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