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Guarded electrical overstress protection circuit

  • US 8,837,099 B2
  • Filed: 12/24/2009
  • Issued: 09/16/2014
  • Est. Priority Date: 08/17/2009
  • Status: Active Grant
First Claim
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1. An electrical overstress protection circuit, comprising:

  • a pair of clamp devices, having opposite polarity, connecting an input signal line to a common node; and

    a second pair of clamp devices, each extending from the common node to a respective reference potential source,wherein the common node is at an externally-supplied constant reference voltage.

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