SCLA017A July   2019  – April 2021 SN74HC595

 

  1.   Trademarks
  2. 1Block Diagram
  3. 2Optimizing System Controller I/O Usage
  4. 3Logic and Translation Use Cases
    1. 3.1 Logic Use Cases
      1. 3.1.1 Combine Power Good Signals
      2. 3.1.2 Debounce Switches and Buttons
      3. 3.1.3 Increase Number of Controller Inputs
      4. 3.1.4 Increase Number of Controller Outputs
    2. 3.2 Voltage Translation Use Cases
      1. 3.2.1 SPI Communication
      2. 3.2.2 RMII Communication
  5. 4Recommended Logic and Translation Families for Network Switches
    1. 4.1 AXC: Advanced eXtremely Low-Voltage CMOS Translation
    2. 4.2 LVC: Low-Voltage CMOS Logic and Translation
    3. 4.3 HC: High-speed CMOS Logic
  6. 5Revision History

3.2.2 RMII Communication

GUID-A8872D65-81A4-4052-AADC-38A72506A758-low.gifFigure 3-6 Using Voltage Translation with a RMII 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 to support RMII interface speed of 100 Mbps
  • Protect downstream devices during power down with VCC isolation
  • See online parametric search tool to find the right voltage level translator