Texas Instruments
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SN74LS158NSR
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SN74LS158NSR

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Multiplexer
  • Characteristics: TTL Logic, 4-to-1 Data Selector/Multiplexer
  • Package: SOIC (Small Outline Integrated Circuit)
  • Essence: Combines four data inputs into a single output line
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Logic Family: LS-TTL
  • Number of Inputs: 4
  • Number of Outputs: 1
  • Supply Voltage Range: 4.75V to 5.25V
  • Operating Temperature Range: -40°C to +85°C
  • Propagation Delay Time: 15 ns (typical)
  • Input Current: ±0.1 mA (maximum)
  • Output Current: ±8 mA (maximum)

Detailed Pin Configuration

The SN74LS158NSR has a total of 16 pins, which are assigned as follows:

  1. A Input 1
  2. B Input 2
  3. C Input 3
  4. D Input 4
  5. GND (Ground)
  6. Y Output
  7. E Enable Input
  8. VCC (Supply Voltage)
  9. Y Output
  10. D Input 4
  11. C Input 3
  12. B Input 2
  13. A Input 1
  14. GND (Ground)
  15. E Enable Input
  16. VCC (Supply Voltage)

Functional Features

  • The SN74LS158NSR is a 4-to-1 data selector/multiplexer IC.
  • It allows the selection of one out of four input lines to be connected to the output line.
  • The selection is controlled by the enable input (E).
  • When E is high, the selected input is passed to the output.
  • When E is low, the output is in a high impedance state.

Advantages and Disadvantages

Advantages: - Compact size due to integration of multiple functions into a single IC. - Low power consumption. - Fast switching speed.

Disadvantages: - Limited number of input lines (4-to-1). - Requires external control signal for selection.

Working Principles

The SN74LS158NSR operates based on TTL logic. It uses a combination of gates and transistors to perform the data selection and multiplexing functions. The enable input controls the flow of data from the selected input to the output. When the enable input is high, the selected input is passed through to the output. When the enable input is low, the output is disconnected from the inputs.

Detailed Application Field Plans

The SN74LS158NSR can be used in various applications where data selection and multiplexing are required. Some potential application fields include:

  1. Data communication systems
  2. Digital audio/video equipment
  3. Industrial control systems
  4. Test and measurement equipment
  5. Automotive electronics

Detailed and Complete Alternative Models

  1. CD4051B: 8-channel analog multiplexer/demultiplexer IC
  2. MC14051B: 8-channel analog multiplexer/demultiplexer IC
  3. 74HC151: 8-input multiplexer IC
  4. 74F157A: Quad 2-input multiplexer IC

These alternative models offer similar functionality to the SN74LS158NSR and can be used as substitutes depending on specific requirements.

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Énumérez 10 questions et réponses courantes liées à l'application de SN74LS158NSR dans les solutions techniques

Sure! Here are 10 common questions and answers related to the application of SN74LS158NSR:

  1. Question: What is SN74LS158NSR?
    Answer: SN74LS158NSR is a quad 2-line to 1-line data selector/multiplexer integrated circuit (IC) commonly used in digital electronics.

  2. Question: What is the purpose of SN74LS158NSR?
    Answer: SN74LS158NSR is used to select one of four input data lines and route it to a single output line based on the control inputs.

  3. Question: What is the operating voltage range for SN74LS158NSR?
    Answer: The operating voltage range for SN74LS158NSR is typically between 4.75V and 5.25V.

  4. Question: How many control inputs does SN74LS158NSR have?
    Answer: SN74LS158NSR has two control inputs, usually labeled as A and B.

  5. Question: What is the maximum frequency at which SN74LS158NSR can operate?
    Answer: SN74LS158NSR can typically operate at frequencies up to 33 MHz.

  6. Question: Can SN74LS158NSR be used for both analog and digital signals?
    Answer: No, SN74LS158NSR is designed for digital signals only and is not suitable for analog applications.

  7. Question: How many output lines does SN74LS158NSR have?
    Answer: SN74LS158NSR has a single output line that carries the selected input data.

  8. Question: What is the propagation delay of SN74LS158NSR?
    Answer: The propagation delay of SN74LS158NSR is typically around 15 ns.

  9. Question: Can SN74LS158NSR be cascaded to increase the number of input lines?
    Answer: Yes, multiple SN74LS158NSR ICs can be cascaded together to increase the number of input lines and select more data sources.

  10. Question: What are some common applications of SN74LS158NSR?
    Answer: SN74LS158NSR is commonly used in digital multiplexing, data routing, address decoding, and bus switching applications.

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