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SN74AS258DE4
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SN74AS258DE4

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Digital Multiplexer
  • Characteristics: High-speed, TTL-compatible, 3-state outputs
  • Package: Dual-In-Line Package (DIP)
  • Essence: Data selector/multiplexer with 2-inputs and 4-output lines
  • Packaging/Quantity: Available in tubes or reels, quantity varies based on supplier

Specifications

  • Logic Family: AS
  • Number of Inputs: 2
  • Number of Outputs: 4
  • Output Type: 3-state
  • Operating Voltage Range: 4.5V to 5.5V
  • Propagation Delay Time: 9ns (typical)
  • Operating Temperature Range: -40°C to 85°C
  • Package Type: 16-pin DIP

Detailed Pin Configuration

The SN74AS258DE4 has a total of 16 pins, each serving a specific purpose:

  1. A Input 1
  2. B Input 1
  3. Enable Input
  4. Output Y1
  5. Output Y2
  6. Output Y3
  7. Output Y4
  8. GND (Ground)
  9. Output Y4 (3-state)
  10. Output Y3 (3-state)
  11. Output Y2 (3-state)
  12. Output Y1 (3-state)
  13. Enable Input (Active Low)
  14. B Input 2
  15. A Input 2
  16. VCC (Positive Power Supply)

Functional Features

The SN74AS258DE4 is a digital multiplexer that allows the selection of one of the two input lines to be routed to any of the four output lines. It operates on TTL logic levels and provides high-speed performance. The 3-state outputs allow for easy connection to other devices without interference.

Advantages and Disadvantages

Advantages: - High-speed operation - TTL-compatible inputs and outputs - 3-state outputs for easy interfacing - Wide operating voltage range - Reliable performance in various temperature conditions

Disadvantages: - Limited number of input and output lines - Requires external enable signal for proper operation

Working Principles

The SN74AS258DE4 works based on the principles of digital multiplexing. It uses the input selection signals (A and B) along with the enable signal to determine which input line is connected to the desired output line. The 3-state outputs allow the device to be effectively disconnected from the output lines when not in use.

Detailed Application Field Plans

The SN74AS258DE4 can be used in various applications that require data selection or multiplexing. Some potential application fields include:

  1. Data communication systems
  2. Digital signal processing
  3. Industrial automation
  4. Test and measurement equipment
  5. Audio/video routing systems

Detailed and Complete Alternative Models

There are several alternative models available that offer similar functionality to the SN74AS258DE4. Some popular alternatives include:

  1. CD4051B: 8-channel analog multiplexer/demultiplexer
  2. 74HC151: 8-input multiplexer
  3. SN74LS157: Quad 2-line to 1-line data selector/multiplexer
  4. CD74HC4067: 16-channel analog multiplexer/demultiplexer

These alternative models provide different features and specifications, allowing users to choose the most suitable option for their specific requirements.

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Senaraikan 10 soalan dan jawapan biasa yang berkaitan dengan aplikasi SN74AS258DE4 dalam penyelesaian teknikal

Sure! Here are 10 common questions and answers related to the application of SN74AS258DE4 in technical solutions:

  1. Q: What is SN74AS258DE4? A: SN74AS258DE4 is a quad 2-input multiplexer with three-state outputs, commonly used in digital logic circuits.

  2. Q: What is the purpose of SN74AS258DE4? A: SN74AS258DE4 is used to select one of four input signals and route it to the output based on the control inputs.

  3. Q: What is the voltage range supported by SN74AS258DE4? A: SN74AS258DE4 supports a voltage range of 4.5V to 5.5V.

  4. Q: How many control inputs does SN74AS258DE4 have? A: SN74AS258DE4 has two control inputs, typically labeled as A and B.

  5. Q: What is the maximum operating frequency of SN74AS258DE4? A: The maximum operating frequency of SN74AS258DE4 is typically around 25 MHz.

  6. Q: Can SN74AS258DE4 be used for bidirectional data transmission? A: No, SN74AS258DE4 is a unidirectional multiplexer and does not support bidirectional data transmission.

  7. Q: What is the output configuration of SN74AS258DE4? A: SN74AS258DE4 has four three-state outputs, allowing multiple devices to share a common bus.

  8. Q: Does SN74AS258DE4 have any built-in protection features? A: Yes, SN74AS258DE4 has built-in diode clamps to protect against electrostatic discharge (ESD) events.

  9. Q: Can SN74AS258DE4 be cascaded to increase the number of inputs? A: Yes, multiple SN74AS258DE4 devices can be cascaded together to increase the number of inputs and outputs.

  10. Q: What are some common applications of SN74AS258DE4? A: SN74AS258DE4 is commonly used in data multiplexing, signal routing, bus switching, and general-purpose digital logic circuits.

Please note that these answers are general and may vary depending on specific use cases and requirements.