ON Semiconductor
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MC74VHCT245ADTR2
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MC74VHCT245ADTR2

Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Level Shifter
  • Characteristics:
    • High-speed CMOS technology
    • Wide voltage range compatibility
    • Low power consumption
    • High noise immunity
  • Package: TSSOP-20
  • Essence: Bidirectional voltage level shifter
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Supply Voltage Range: 2.0V to 5.5V
  • Input Voltage Range: 0V to VCC
  • Output Voltage Range: 0V to VCC
  • Maximum Input Current: ±10mA
  • Maximum Output Current: ±32mA
  • Propagation Delay: 4.3ns (typical)
  • Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MC74VHCT245ADTR2 has a total of 20 pins, which are assigned as follows:

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

Functional Features

  • Bidirectional voltage level shifting between two different voltage domains.
  • Allows interfacing between devices operating at different voltage levels.
  • Supports both 3.3V and 5V logic families.
  • Provides high-speed data transmission with minimal propagation delay.
  • Offers high noise immunity, ensuring reliable signal integrity.

Advantages

  • Wide voltage range compatibility allows for versatile usage.
  • Low power consumption enhances energy efficiency.
  • High noise immunity ensures reliable data transmission.
  • Compact TSSOP-20 package saves board space.

Disadvantages

  • Limited to bidirectional voltage level shifting applications.
  • Not suitable for applications requiring higher current capabilities.

Working Principles

The MC74VHCT245ADTR2 is a bidirectional voltage level shifter that enables communication between devices operating at different voltage levels. It utilizes high-speed CMOS technology to achieve fast data transmission while consuming low power. The direction of data flow is controlled by the DIR pin, allowing seamless bidirectional communication. The OE pins can be used to enable or disable the outputs as needed.

Detailed Application Field Plans

The MC74VHCT245ADTR2 finds applications in various fields, including:

  1. Microcontroller interfacing with different voltage peripherals.
  2. Communication systems involving multiple voltage domains.
  3. Industrial automation and control systems.
  4. Data acquisition and processing systems.
  5. Battery-powered portable devices.

Alternative Models

  1. SN74LVC245A: Similar bidirectional voltage level shifter with 3.3V to 5V compatibility.
  2. CD4508B: Dual 4-bit bidirectional voltage level shifter with higher current capabilities.
  3. TXS0108E: 8-bit bidirectional voltage level shifter with automatic direction control.

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Énumérez 10 questions et réponses courantes liées à l'application de MC74VHCT245ADTR2 dans les solutions techniques

Sure! Here are 10 common questions and answers related to the application of MC74VHCT245ADTR2 in technical solutions:

  1. Q: What is MC74VHCT245ADTR2? A: MC74VHCT245ADTR2 is a high-speed, octal bus transceiver with 3-state outputs. It is commonly used for level shifting and signal buffering in digital systems.

  2. Q: What is the operating voltage range of MC74VHCT245ADTR2? A: The operating voltage range of MC74VHCT245ADTR2 is typically between 4.5V and 5.5V.

  3. Q: How many bidirectional channels does MC74VHCT245ADTR2 have? A: MC74VHCT245ADTR2 has 8 bidirectional channels, allowing it to transmit and receive data on 8 different lines.

  4. Q: What is the maximum data transfer rate supported by MC74VHCT245ADTR2? A: MC74VHCT245ADTR2 supports a maximum data transfer rate of 200 MHz.

  5. Q: Can MC74VHCT245ADTR2 be used for voltage level shifting? A: Yes, MC74VHCT245ADTR2 can be used for voltage level shifting as it supports both TTL and CMOS voltage levels.

  6. Q: Does MC74VHCT245ADTR2 have built-in protection against overvoltage or ESD? A: No, MC74VHCT245ADTR2 does not have built-in protection against overvoltage or electrostatic discharge (ESD). Additional external protection may be required.

  7. Q: What is the output drive capability of MC74VHCT245ADTR2? A: MC74VHCT245ADTR2 has a typical output drive capability of ±8 mA.

  8. Q: Can MC74VHCT245ADTR2 be used in both parallel and serial communication systems? A: Yes, MC74VHCT245ADTR2 can be used in both parallel and serial communication systems as a bidirectional transceiver.

  9. Q: What is the power supply current consumption of MC74VHCT245ADTR2? A: The power supply current consumption of MC74VHCT245ADTR2 is typically around 10 mA.

  10. Q: Is MC74VHCT245ADTR2 suitable for high-speed data transmission over long distances? A: MC74VHCT245ADTR2 is not specifically designed for long-distance data transmission. For longer distances, additional measures such as line drivers or repeaters may be required.

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