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74ACT240SCX
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Encyclopedia Entry: 74ACT240SCX

Product Overview

Category

The 74ACT240SCX belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in digital electronic systems for signal amplification and buffering purposes.

Characteristics

  • The 74ACT240SCX is a high-speed octal buffer/line driver with 3-state outputs.
  • It operates on a wide voltage range, typically between 2V and 6V.
  • This IC offers fast propagation delay times, making it suitable for high-performance applications.
  • It features 8 input/output pins, each capable of driving up to 24mA of current.
  • The 74ACT240SCX has built-in protection against electrostatic discharge (ESD).

Package

The 74ACT240SCX is available in a small outline integrated circuit (SOIC) package.

Essence

The essence of this IC lies in its ability to amplify and buffer digital signals, ensuring reliable transmission within electronic systems.

Packaging/Quantity

The 74ACT240SCX is typically packaged in reels or tubes, containing a quantity of 250 units per package.

Specifications

  • Supply Voltage Range: 2V to 6V
  • Input Voltage Range: 0V to VCC
  • Output Voltage Range: 0V to VCC
  • Maximum Operating Frequency: 125 MHz
  • Propagation Delay Time: 5 ns (max)
  • Input/Output Current: ±24 mA

Detailed Pin Configuration

The 74ACT240SCX has a total of 20 pins, which are assigned as follows:

  1. GND (Ground)
  2. A1 (Input/Output)
  3. Y1 (Output)
  4. A2 (Input/Output)
  5. Y2 (Output)
  6. A3 (Input/Output)
  7. Y3 (Output)
  8. A4 (Input/Output)
  9. Y4 (Output)
  10. A5 (Input/Output)
  11. Y5 (Output)
  12. A6 (Input/Output)
  13. Y6 (Output)
  14. A7 (Input/Output)
  15. Y7 (Output)
  16. A8 (Input/Output)
  17. Y8 (Output)
  18. OE (Output Enable)
  19. VCC (Supply Voltage)
  20. GND (Ground)

Functional Features

  • The 74ACT240SCX acts as a buffer and line driver, ensuring signal integrity in digital systems.
  • It provides 3-state outputs, allowing multiple devices to share a common bus without interference.
  • This IC offers high-speed operation, making it suitable for time-critical applications.
  • It has built-in protection against ESD, enhancing its reliability in real-world environments.

Advantages and Disadvantages

Advantages

  • Wide voltage range allows compatibility with various digital systems.
  • Fast propagation delay times enable high-performance applications.
  • 3-state outputs facilitate bus sharing among multiple devices.
  • Built-in ESD protection enhances reliability.

Disadvantages

  • Limited number of input/output pins (8) may restrict the complexity of certain designs.
  • Higher power consumption compared to some low-power alternatives.

Working Principles

The 74ACT240SCX operates by receiving digital signals at its input pins (A1-A8). These signals are then amplified and buffered before being transmitted through the output pins (Y1-Y8). The Output Enable (OE) pin controls the activation of the outputs. When the OE pin is low, the outputs are enabled, allowing the transmission of signals. Conversely, when the OE pin is high, the outputs are disabled, entering a high-impedance state.

Detailed Application Field Plans

The 74ACT240SCX finds applications in various digital systems, including but not limited to: - Microcontrollers and microprocessors - Memory modules - Communication devices - Industrial automation systems - Automotive electronics

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the 74ACT240SCX include: - 74HC240: A CMOS version with lower power consumption. - SN74LS240: A TTL version with different voltage levels. - CD4024: A ripple counter/divider IC with additional features.

These alternatives can be considered based on specific design requirements and compatibility with existing systems.

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Sebutkan 10 pertanyaan dan jawaban umum terkait penerapan 74ACT240SCX dalam solusi teknis

Sure! Here are 10 common questions and answers related to the application of 74ACT240SCX in technical solutions:

  1. Q: What is the 74ACT240SCX? A: The 74ACT240SCX is an octal buffer/line driver with 3-state outputs, commonly used in digital logic circuits.

  2. Q: What is the maximum operating voltage for the 74ACT240SCX? A: The maximum operating voltage for the 74ACT240SCX is typically 5.5V.

  3. Q: How many inputs and outputs does the 74ACT240SCX have? A: The 74ACT240SCX has 8 inputs and 8 outputs.

  4. Q: Can the 74ACT240SCX be used as a level shifter? A: Yes, the 74ACT240SCX can be used as a level shifter to convert signals between different voltage levels.

  5. Q: What is the purpose of the 3-state outputs in the 74ACT240SCX? A: The 3-state outputs allow multiple devices to share a common bus without interfering with each other.

  6. Q: What is the maximum output current that the 74ACT240SCX can drive? A: The 74ACT240SCX can typically drive up to 24mA of output current.

  7. Q: Can the 74ACT240SCX be used in high-speed applications? A: Yes, the 74ACT240SCX is designed for high-speed operation and can be used in applications with fast switching requirements.

  8. Q: Does the 74ACT240SCX have built-in protection against electrostatic discharge (ESD)? A: Yes, the 74ACT240SCX typically has built-in ESD protection to safeguard against damage from static electricity.

  9. Q: Can the 74ACT240SCX be used in both digital and analog circuits? A: No, the 74ACT240SCX is specifically designed for digital logic applications and may not perform optimally in analog circuits.

  10. Q: Are there any specific precautions to consider when using the 74ACT240SCX? A: It is important to follow the recommended operating conditions, such as voltage levels and temperature ranges, specified in the datasheet to ensure proper functionality and reliability of the device.