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DM74AS258N
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DM74AS258N

Overview

  • Category: Integrated Circuit
  • Use: Digital Multiplexer
  • Characteristics: High-speed, TTL Logic
  • Package: DIP (Dual In-line Package)
  • Essence: 4-to-1 Data Selector/Multiplexer
  • Packaging/Quantity: Tube packaging, 25 pieces per tube

Specifications

  • Supply Voltage: 4.75V to 5.25V
  • Input Voltage: 0V to VCC
  • Output Voltage: 0V to VCC
  • Operating Temperature: -55°C to +125°C
  • Propagation Delay Time: 9ns (typical)
  • Power Dissipation: 500mW (max)

Detailed Pin Configuration

The DM74AS258N has a total of 16 pins, which are labeled as follows:

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

Functional Features

The DM74AS258N is a 4-to-1 data selector/multiplexer that allows the selection of one out of four input data lines based on the select inputs (A, B, C, and D). It operates on TTL logic levels and provides high-speed performance with a propagation delay time of 9ns. The enable input (pin 10) controls the output state.

Advantages and Disadvantages

Advantages: - High-speed operation - Wide operating temperature range - Versatile multiplexing capability - Easy integration into digital circuits

Disadvantages: - Limited number of input data lines - Requires external control for proper operation

Working Principles

The DM74AS258N works by using the select inputs to determine which of the four input data lines is connected to the output. When the enable input is high, the selected input data line is passed through to the output. When the enable input is low, all output lines are in a high-impedance state.

Detailed Application Field Plans

The DM74AS258N can be used in various applications, including: 1. Data multiplexing in digital systems 2. Address decoding in memory systems 3. Input selection in microprocessor-based systems 4. Signal routing in communication systems

Detailed and Complete Alternative Models

Some alternative models to the DM74AS258N include: - SN74LS157N: Quad 2-to-1 Data Selector/Multiplexer - CD4052BE: Dual 4-channel Analog Multiplexer/Demultiplexer - MC14051BCP: 8-channel Analog Multiplexer/Demultiplexer

These alternative models offer similar functionality but may have different specifications and pin configurations.

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Orodhesha maswali na majibu 10 ya kawaida yanayohusiana na utumiaji wa DM74AS258N katika suluhu za kiufundi

Sure! Here are 10 common questions and answers related to the application of DM74AS258N in technical solutions:

  1. Q: What is DM74AS258N? A: DM74AS258N is a specific type of integrated circuit (IC) known as a quad 2-to-1 multiplexer.

  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.

  3. Q: How many inputs does DM74AS258N have? A: DM74AS258N has four data inputs, labeled A, B, C, and D.

  4. Q: How many output lines does DM74AS258N have? A: DM74AS258N has two output lines, labeled Y and Y̅ (Y-bar).

  5. Q: What is the function of the enable pin (E) on DM74AS258N? A: The enable pin (E) is used to control the operation of the multiplexer. When E is high, the multiplexer is enabled, and when E is low, the multiplexer is disabled.

  6. Q: How do I select which input signal is routed to the output using DM74AS258N? A: The selection of the input signal is determined by the combination of the select inputs (S0 and S1). Refer to the datasheet for the truth table that shows the relationship between the select inputs and the selected input.

  7. Q: What is the power supply voltage range for DM74AS258N? A: The recommended power supply voltage range for DM74AS258N is typically between 4.75V and 5.25V.

  8. Q: Can DM74AS258N handle high-speed signals? A: Yes, DM74AS258N is designed to operate at high speeds and can handle signals with fast switching times.

  9. Q: Are there any specific precautions I should take when using DM74AS258N? A: It is important to ensure that the power supply voltage does not exceed the specified range, and to follow proper handling and static discharge precautions to prevent damage to the IC.

  10. Q: What are some common applications of DM74AS258N? A: DM74AS258N can be used in various digital systems, such as data selectors, multiplexers, signal routing, data transmission, and control circuits.

Please note that these answers are general and may vary depending on the specific requirements and datasheet of DM74AS258N.