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74VHCT245M
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Encyclopedia Entry: 74VHCT245M

Product Overview

Category

The 74VHCT245M belongs to the category of integrated circuits (ICs), specifically a type of digital logic level shifter.

Use

This IC is commonly used for voltage level shifting in digital systems. It allows for bidirectional communication between devices operating at different voltage levels.

Characteristics

  • Voltage Compatibility: The 74VHCT245M is designed to operate with both 3.3V and 5V logic levels, making it versatile for various applications.
  • High-Speed Operation: This IC offers fast switching times, enabling efficient data transfer between devices.
  • Bidirectional Communication: It supports bidirectional data flow, allowing for seamless communication between devices.
  • Low Power Consumption: The 74VHCT245M is designed to consume minimal power, making it suitable for battery-powered applications.

Package and Quantity

The 74VHCT245M is typically available in a standard 20-pin SOIC (Small Outline Integrated Circuit) package. It is commonly sold in reels or tubes containing multiple units.

Essence

The essence of the 74VHCT245M lies in its ability to facilitate voltage level translation, ensuring compatibility between devices operating at different logic voltage levels.

Specifications

  • Supply Voltage Range: 2V to 5.5V
  • Logic Voltage Levels: 3.3V and 5V
  • Input/Output Compatibility: TTL, CMOS
  • Maximum Operating Frequency: X MHz
  • Propagation Delay: Y ns
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The 74VHCT245M features a total of 20 pins, each serving a specific function. The pin configuration is as follows:

  1. Pin 1: A0 (Input/Output)
  2. Pin 2: A1 (Input/Output)
  3. Pin 3: A2 (Input/Output)
  4. Pin 4: A3 (Input/Output)
  5. Pin 5: A4 (Input/Output)
  6. Pin 6: A5 (Input/Output)
  7. Pin 7: A6 (Input/Output)
  8. Pin 8: GND (Ground)
  9. Pin 9: B7 (Input/Output)
  10. Pin 10: B6 (Input/Output)
  11. Pin 11: B5 (Input/Output)
  12. Pin 12: B4 (Input/Output)
  13. Pin 13: B3 (Input/Output)
  14. Pin 14: B2 (Input/Output)
  15. Pin 15: B1 (Input/Output)
  16. Pin 16: B0 (Input/Output)
  17. Pin 17: OE (Output Enable)
  18. Pin 18: DIR (Direction Control)
  19. Pin 19: VCC (Power Supply)
  20. Pin 20: GND (Ground)

Functional Features

  • Bidirectional Voltage Level Shifting: The 74VHCT245M allows for bidirectional data transfer between devices operating at different voltage levels.
  • Output Enable Control: The OE pin enables or disables the outputs, providing flexibility in controlling data flow.
  • Direction Control: The DIR pin determines the direction of data transmission, allowing for versatile communication configurations.

Advantages and Disadvantages

Advantages

  • Wide Voltage Compatibility: Supports both 3.3V and 5V logic levels, enhancing compatibility with various devices.
  • High-Speed Operation: Offers fast switching times, ensuring efficient data transfer.
  • Low Power Consumption: Designed to minimize power consumption, making it suitable for energy-efficient applications.

Disadvantages

  • Limited Voltage Range: The 74VHCT245M is not suitable for voltage levels outside the specified range of 2V to 5.5V.
  • Propagation Delay: The IC introduces a certain propagation delay, which may impact real-time applications requiring instantaneous data transfer.

Working Principles

The 74VHCT245M operates based on the principles of voltage level shifting using a combination of CMOS and TTL logic. It utilizes internal circuitry to translate signals between different voltage domains while maintaining bidirectional communication.

Detailed Application Field Plans

The 74VHCT245M finds application in various fields where voltage level translation is required. Some common application areas include:

  1. Microcontroller Interfacing: Facilitating communication between microcontrollers operating at different voltage levels.
  2. Sensor Networks: Enabling connectivity between sensors and microcontrollers with varying logic voltage requirements.
  3. Industrial Automation: Supporting data exchange between different components of automated systems.
  4. Communication Systems: Ensuring compatibility between devices in communication networks with diverse voltage levels.

Detailed and Complete Alternative Models

  1. SN74LVCH245A: A

Lista 10 Vanliga frågor och svar relaterade till tillämpningen av 74VHCT245M i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of 74VHCT245M in technical solutions:

  1. Q: What is the 74VHCT245M? A: The 74VHCT245M is a high-speed octal bus transceiver with 3-state outputs, commonly used for level shifting and signal buffering in digital circuits.

  2. Q: What is the maximum operating voltage for the 74VHCT245M? A: The maximum operating voltage for the 74VHCT245M is typically 5.5 volts.

  3. Q: How many bidirectional channels does the 74VHCT245M have? A: The 74VHCT245M has 8 bidirectional channels, allowing for the simultaneous transmission of data in both directions.

  4. Q: Can the 74VHCT245M handle different logic levels on its input and output sides? A: Yes, the 74VHCT245M can handle different logic levels as it has built-in level-shifting capabilities.

  5. Q: What is the typical propagation delay of the 74VHCT245M? A: The typical propagation delay of the 74VHCT245M is around 6 nanoseconds.

  6. Q: Can the 74VHCT245M be used in applications requiring bi-directional communication between different voltage domains? A: Yes, the 74VHCT245M is commonly used for level translation between different voltage domains, making it suitable for such applications.

  7. Q: Does the 74VHCT245M support 3-state outputs? A: Yes, the 74VHCT245M supports 3-state outputs, allowing for the tri-state control of the output pins.

  8. Q: What is the maximum current that can be sourced or sunk by the 74VHCT245M? A: The maximum current that can be sourced or sunk by the 74VHCT245M is typically around 8 milliamperes.

  9. Q: Can the 74VHCT245M be used in high-speed applications? A: Yes, the 74VHCT245M is designed for high-speed operation and can be used in applications with fast data rates.

  10. Q: Is the 74VHCT245M available in different package options? A: Yes, the 74VHCT245M is available in various package options, such as SOIC, TSSOP, and PDIP, providing flexibility for different PCB layouts and assembly methods.

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