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SN74AS258NSR

SN74AS258NSR

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Digital Multiplexer
  • Characteristics: High-speed, low-power consumption
  • Package: SOIC (Small Outline Integrated Circuit)
  • Essence: 4-line to 1-line Data Selector/Multiplexer
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Supply Voltage Range: 4.5V to 5.5V
  • Input Voltage Range: 0V to VCC
  • Operating Temperature Range: -40°C to +85°C
  • Output Current: ±6mA
  • Propagation Delay Time: 9ns (typical)

Detailed Pin Configuration

The SN74AS258NSR has a total of 16 pins. The pin configuration is as follows:

  1. A0 - Select Input A0
  2. A1 - Select Input A1
  3. A2 - Select Input A2
  4. A3 - Select Input A3
  5. B - Data Input B
  6. C - Data Input C
  7. D - Data Input D
  8. GND - Ground
  9. Y - Multiplexed Output Y
  10. E - Enable Input
  11. F - Enable Input
  12. VCC - Positive Power Supply
  13. NC - No Connection
  14. NC - No Connection
  15. NC - No Connection
  16. NC - No Connection

Functional Features

The SN74AS258NSR is a 4-line to 1-line data selector/multiplexer IC. It allows the selection of one out of four input lines based on the select inputs (A0-A3). The selected input is then routed to the output pin (Y). The enable inputs (E and F) control the operation of the IC.

Advantages and Disadvantages

Advantages: - High-speed operation - Low-power consumption - Compact SOIC package - Wide operating temperature range

Disadvantages: - Limited to 4 input lines - Requires external enable control

Working Principles

The SN74AS258NSR works based on the principle of digital multiplexing. The select inputs (A0-A3) determine which input line is connected to the output pin (Y). The enable inputs (E and F) control the overall operation of the IC. When both enable inputs are high, the IC is enabled, and the selected input is passed to the output. When either or both enable inputs are low, the IC is disabled, and the output remains in a high-impedance state.

Detailed Application Field Plans

The SN74AS258NSR finds applications in various digital systems where data selection and multiplexing are required. Some potential application fields include:

  1. Data communication systems
  2. Digital signal processing
  3. Multiplexed data buses
  4. Address decoding circuits
  5. Memory systems
  6. Microcontroller interfacing

Detailed and Complete Alternative Models

  1. SN74LS258N: Similar functionality but operates at a lower speed.
  2. SN74HC258N: CMOS-based alternative with improved power efficiency.
  3. CD4051B: Analog multiplexer/demultiplexer with similar pin configuration.

These alternative models provide similar functionality to the SN74AS258NSR but may have different characteristics and specifications.

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Sebutkan 10 pertanyaan dan jawaban umum terkait penerapan SN74AS258NSR dalam solusi teknis

Sure! Here are 10 common questions and answers related to the application of SN74AS258NSR in technical solutions:

  1. Q: What is SN74AS258NSR? A: SN74AS258NSR is a quad 2-input multiplexer with three-state outputs, commonly used in digital logic circuits.

  2. Q: What is the purpose of SN74AS258NSR? A: SN74AS258NSR is used to select one of four input signals and route it to the output based on control inputs.

  3. Q: What is the voltage range supported by SN74AS258NSR? A: SN74AS258NSR supports a voltage range of 4.5V to 5.5V.

  4. Q: How many control inputs does SN74AS258NSR have? A: SN74AS258NSR has two control inputs, typically labeled as "S0" and "S1".

  5. Q: What is the maximum operating frequency of SN74AS258NSR? A: The maximum operating frequency of SN74AS258NSR is typically around 25 MHz.

  6. Q: Can SN74AS258NSR handle both analog and digital signals? A: No, SN74AS258NSR is designed for digital signals only and cannot handle analog signals.

  7. Q: What is the output configuration of SN74AS258NSR? A: SN74AS258NSR has four three-state outputs, allowing multiple devices to be connected together without conflicts.

  8. Q: Can SN74AS258NSR be cascaded to increase the number of inputs? A: Yes, multiple SN74AS258NSR chips can be cascaded together to increase the number of inputs and outputs.

  9. Q: What is the power supply requirement for SN74AS258NSR? A: SN74AS258NSR requires a single +5V power supply.

  10. Q: Can SN74AS258NSR be used in high-speed applications? A: Yes, SN74AS258NSR is suitable for high-speed applications due to its fast propagation delay and setup/hold times.

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