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SN74BCT245NSR

SN74BCT245NSR

Product Overview

  • Category: Integrated Circuit
  • Use: Bus Transceiver
  • Characteristics: High-speed, Bi-directional, Non-inverting
  • Package: SOIC (Small Outline Integrated Circuit)
  • Essence: Transfers data between two bidirectional bus systems
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Supply Voltage Range: 4.5V to 5.5V
  • Input Voltage Range: 0V to VCC
  • Output Voltage Range: 0V to VCC
  • Operating Temperature Range: -40°C to +85°C
  • Propagation Delay Time: 6ns (typical)
  • Output Drive Capability: ±24mA

Pin Configuration

The SN74BCT245NSR has a total of 20 pins, which are assigned as follows:

  1. OE (Output Enable) - Active Low Output Enable
  2. A1 - Data Input/Output for Port A
  3. B1 - Data Input/Output for Port B
  4. A2 - Data Input/Output for Port A
  5. B2 - Data Input/Output for Port B
  6. A3 - Data Input/Output for Port A
  7. B3 - Data Input/Output for Port B
  8. A4 - Data Input/Output for Port A
  9. B4 - Data Input/Output for Port B
  10. GND (Ground) - Ground Reference
  11. B5 - Data Input/Output for Port B
  12. A5 - Data Input/Output for Port A
  13. B6 - Data Input/Output for Port B
  14. A6 - Data Input/Output for Port A
  15. B7 - Data Input/Output for Port B
  16. A7 - Data Input/Output for Port A
  17. VCC - Positive Power Supply
  18. DIR (Direction Control) - Direction Control Input
  19. B8 - Data Input/Output for Port B
  20. A8 - Data Input/Output for Port A

Functional Features

  • Bi-directional data transfer between two bus systems
  • Non-inverting logic ensures compatibility with various systems
  • High-speed operation for efficient data transmission
  • Output enable control for flexible usage

Advantages and Disadvantages

Advantages: - Allows bidirectional communication between different bus systems - Non-inverting logic simplifies interfacing with other devices - High-speed operation enables quick data transfer

Disadvantages: - Requires careful handling due to sensitivity to voltage fluctuations - Limited output drive capability may restrict use in certain applications

Working Principles

The SN74BCT245NSR is a bus transceiver that facilitates the bidirectional transfer of data between two bus systems. It operates by receiving data from one bus and transmitting it to the other, while also allowing data flow in the opposite direction. The non-inverting logic ensures compatibility with various systems, making it suitable for diverse applications.

Detailed Application Field Plans

The SN74BCT245NSR finds application in various fields where bidirectional data transfer between different bus systems is required. Some specific areas of use include:

  1. Industrial Automation: Used in PLCs (Programmable Logic Controllers) for communication between different modules.
  2. Automotive Electronics: Facilitates data exchange between various vehicle subsystems, such as engine control units and infotainment systems.
  3. Telecommunications: Enables data transfer between different network interfaces, such as Ethernet and RS-232.
  4. Computer Peripherals: Used in printers, scanners, and external storage devices for data communication with the host computer.

Detailed and Complete Alternative Models

  1. SN74LVC245A: Low Voltage CMOS Bus Transceiver with 3.3V compatibility.
  2. SN74HCT245: High-Speed CMOS Bus Transceiver with TTL compatibility.
  3. SN74LVTH245A: Low Voltage CMOS Bus Transceiver with 3.3V compatibility and enhanced ESD protection.

These alternative models offer similar functionality to the SN74BCT245NSR but may have different voltage compatibility, speed, or additional features.

Word count: 410 words

Liệt kê 10 câu hỏi và câu trả lời thường gặp liên quan đến ứng dụng SN74BCT245NSR trong giải pháp kỹ thuật

Sure! Here are 10 common questions and answers related to the application of SN74BCT245NSR:

  1. Question: What is SN74BCT245NSR?
    - Answer: SN74BCT245NSR is a non-inverting octal bus transceiver with 3-state outputs, commonly used in digital systems.

  2. Question: What is the voltage range supported by SN74BCT245NSR?
    - Answer: SN74BCT245NSR supports a voltage range of 4.5V to 5.5V.

  3. Question: How many channels does SN74BCT245NSR have?
    - Answer: SN74BCT245NSR has 8 bidirectional channels.

  4. Question: What is the maximum data transfer rate of SN74BCT245NSR?
    - Answer: SN74BCT245NSR can operate at a maximum data transfer rate of 25 MHz.

  5. Question: Can SN74BCT245NSR be used for level shifting between different voltage domains?
    - Answer: Yes, SN74BCT245NSR can be used for level shifting between different voltage domains as long as the voltage range is within its supported range.

  6. Question: Does SN74BCT245NSR support 3-state outputs?
    - Answer: Yes, SN74BCT245NSR supports 3-state outputs, allowing multiple devices to share a common bus.

  7. Question: What is the power supply requirement for SN74BCT245NSR?
    - Answer: SN74BCT245NSR requires a single power supply voltage of 5V.

  8. Question: Can SN74BCT245NSR be used in both parallel and serial communication systems?
    - Answer: Yes, SN74BCT245NSR can be used in both parallel and serial communication systems, depending on the application requirements.

  9. Question: What is the typical propagation delay of SN74BCT245NSR?
    - Answer: The typical propagation delay of SN74BCT245NSR is around 10 ns.

  10. Question: Can SN74BCT245NSR handle bidirectional data transfer?
    - Answer: Yes, SN74BCT245NSR is designed for bidirectional data transfer, making it suitable for applications where data needs to be transmitted in both directions.

Please note that these answers are general and may vary based on specific application requirements. It's always recommended to refer to the datasheet and consult with technical experts for accurate information.