SCDA055 December   2024 SN74CB3Q16210

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Electrical Protection Definitions
    1. 2.1 Level 0 Isolation
    2. 2.2 Level 1 Isolation
    3. 2.3 Level 2 Isolation – Also Known as Hot-Insertion
    4. 2.4 Level 3 Isolation – Also Known as Live-Insertion
  6. 3Isolation Requirements Features
    1. 3.1 Ioff
    2. 3.2 Partial-Power-Down Mode
    3. 3.3 Hot Swapping or Insertion With Multiplexers
    4. 3.4 Hot-Insertion Hero Devices – Up to Level 2 Isolation Support
  7. 4Summary
  8. 5References

2.4 Level 3 Isolation – Also Known as Live-Insertion

A device designed for live insertion allows insertion or removal of a card without limitations, restrictions, or requirements of other circuitry on system power and signaling. Data is not corrupted under any circumstances during the insertion or extraction event. Ioff, partial-power-down mode, and precharged I/Os typically are required to meet these requirements.