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SN74LVC245AGQNR
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SN74LVC245AGQNR

Overview

  • Category: Integrated Circuit
  • Use: Level Shifter/Transceiver
  • Characteristics: Bi-directional, 8-bit, voltage level translation
  • Package: TSSOP (Thin Shrink Small Outline Package)
  • Essence: Transfers data between different voltage domains
  • Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

  • Supply Voltage Range: 1.65V to 5.5V
  • High-Level Input Voltage: 2V to VCC + 0.5V
  • Low-Level Input Voltage: -0.5V to 0.8V
  • High-Level Output Voltage: VCC - 0.4V to VCC + 0.5V
  • Low-Level Output Voltage: -0.4V to 0.4V
  • Maximum Operating Frequency: 100MHz

Pin Configuration

The SN74LVC245AGQNR has a total of 20 pins. The pin configuration is as follows:

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

Functional Features

  • Bi-directional data transfer between two voltage domains
  • Automatic direction control based on DIR pin
  • Output enable/disable control using OE pin
  • Supports voltage level translation from 1.65V to 5.5V

Advantages and Disadvantages

Advantages

  • Allows communication between devices operating at different voltage levels
  • Easy to use with simple control pins
  • Wide supply voltage range for compatibility with various systems
  • High-speed operation up to 100MHz

Disadvantages

  • Limited to 8-bit data transfer
  • Not suitable for applications requiring higher bit widths

Working Principles

The SN74LVC245AGQNR is a bidirectional level shifter/transceiver that enables data transfer between two voltage domains. It automatically controls the direction of data flow based on the DIR pin. The OE pin allows the user to enable or disable the outputs.

The device uses a voltage level translation technique to ensure proper signal transfer between different voltage levels. It supports a wide supply voltage range from 1.65V to 5.5V, making it compatible with various systems.

Detailed Application Field Plans

The SN74LVC245AGQNR is commonly used in applications where data communication is required between devices operating at different voltage levels. Some of the typical application fields include:

  1. Microcontroller interfacing with different voltage peripherals
  2. Communication between FPGA and external devices
  3. Level shifting in mixed-voltage systems
  4. Interface translation in battery-powered devices

Detailed and Complete Alternative Models

  1. SN74LVC245APW - TSSOP package, 20 pins, similar specifications
  2. SN74LVC245ADGVR - TVSOP package, 20 pins, similar specifications
  3. SN74LVC245ARGYR - VQFN package, 20 pins, similar specifications

These alternative models offer similar functionality and can be used as replacements for the SN74LVC245AGQNR based on specific requirements and package preferences.

Note: The content provided above is approximately 400 words. Additional information may be required to meet the 1100-word requirement.

Sebutkan 10 pertanyaan dan jawaban umum terkait penerapan SN74LVC245AGQNR dalam solusi teknis

Sure! Here are 10 common questions and answers related to the application of SN74LVC245AGQNR:

  1. Question: What is SN74LVC245AGQNR?
    - Answer: SN74LVC245AGQNR is a bidirectional octal bus transceiver with 3-state outputs, commonly used in digital systems.

  2. Question: What is the voltage range supported by SN74LVC245AGQNR?
    - Answer: SN74LVC245AGQNR supports a voltage range of 1.65V to 5.5V.

  3. Question: How many data lines can SN74LVC245AGQNR handle?
    - Answer: SN74LVC245AGQNR can handle 8 data lines (octal).

  4. Question: Can SN74LVC245AGQNR be used for level shifting between different voltage domains?
    - Answer: Yes, SN74LVC245AGQNR can be used for level shifting between different voltage domains due to its wide voltage range support.

  5. Question: What is the maximum data transfer rate supported by SN74LVC245AGQNR?
    - Answer: SN74LVC245AGQNR supports a maximum data transfer rate of 100 Mbps.

  6. Question: Does SN74LVC245AGQNR have built-in ESD protection?
    - Answer: Yes, SN74LVC245AGQNR has built-in ESD protection, making it more robust against electrostatic discharge.

  7. Question: Can SN74LVC245AGQNR be used in both input and output modes simultaneously?
    - Answer: No, SN74LVC245AGQNR operates in either input or output mode at a given time.

  8. Question: What is the power supply voltage required for SN74LVC245AGQNR?
    - Answer: SN74LVC245AGQNR requires a power supply voltage of 1.65V to 5.5V.

  9. Question: Can SN74LVC245AGQNR be used in automotive applications?
    - Answer: Yes, SN74LVC245AGQNR is suitable for automotive applications as it meets the necessary standards and requirements.

  10. Question: Are there any specific precautions to consider when using SN74LVC245AGQNR?
    - Answer: It is important to follow the recommended operating conditions, handling guidelines, and ESD precautions provided in the datasheet to ensure proper usage of SN74LVC245AGQNR.

Please note that these answers are general and may vary depending on the specific application and requirements. Always refer to the datasheet and consult with technical experts for accurate information.