SCLA018A March   2019  – April 2021 SN74AVC4T774 , TXB0104

 

  1.   Trademarks
  2. 1Block Diagram
  3. 2Optimize System Controller to Wireless Module Interface
  4. 3Logic and Translation Use Cases
    1. 3.1 Logic Use Cases
      1. 3.1.1 Increase Number of Controller Outputs
      2. 3.1.2 Drive Indicator LEDs
      3. 3.1.3 Open-Drain Buffer
      4. 3.1.4 Debounce Switches and Buttons
      5. 3.1.5 Generate a Clock Signal from a Crystal Oscillator
    2. 3.2 Voltage Translation Use Cases
      1. 3.2.1 SPI Communication
      2. 3.2.2 GPIO Communication
      3. 3.2.3 I2C Communication
      4. 3.2.4 SD Card Communication
  5. 4Recommended Logic and Translation Families for Video Doorbells
    1. 4.1 AUP: Advanced Ultra-Low-Power CMOS Logic and Translation
    2. 4.2 AXC: Advanced Extremely Low-Voltage CMOS Translation
    3. 4.3 LVC: Low-Voltage CMOS Logic and Translation
  6. 5Revision History

3.2.1 SPI Communication

GUID-20210319-CA0I-P2CP-QZTB-PCZGKL7N1ZBM-low.svgFigure 3-6 Using Voltage Translation with a SPI-Communication Bus
  • Enable communication when devices have mismatched logic voltage levels.
  • Prevent damage to devices that cannot support higher voltage inputs.
  • Improve data rates over discrete translation solutions.
  • Provides protection from disconnected peripherals
  • Visit TI's Online parametric search tool to find the correct voltage level translator.