Si84xx Digital Isolators​​

Note:  Si84xx devices remain in production, but are not recommended for new designs. For new designs, please use Si86xx Digital Isolators instead.

Si84xx digital isolators are the industry’s highest-performance, easiest-to-use, and lowest-cost line of 2.5 to 5.0 kVrms rated digital isolators and are 10x more reliable than optocouplers.


Isolation rate
1.0 kVrms to 5.0 kVrms
Max propagation delay
13 ns

Common Specs

  • 5 kV, 2.5 kV and 1 kV isolation ratings
  • High integration: up to 6 isolation channels in a single package
  • High-speed operation: DC–150 Mbps
  • Wide operating supply voltage: 2.7 - 5.5 V
  • Low power consumption
  • Precise timing
  • Less than 10 ns propagation delay
  • 2 ns pulse width distortion
  • 1 ns channel-channel matching
  • 2 ns pulse width skew
  • Transient immunity: >25 kV/µs
  • Enable controlled outputs
  • DC correct
  • No start-up initialization required


Find the Right Si84xx Device Select Columns
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Part Number Isolation Rating (kVrms) Unidirectional Channels Bidirectional Channels Forward Channels Reverse Channels Default Output State Max Data Rate (Mbps) Max Propagation Delay (µs) Input Supply (V) Output Supply (V) Enable Control 10 kV Surge AEC-Q100 Package Type

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