ESD Protection Scheme for Integrated Circuit Having Multi-Power Domains
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United States of America Patent
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Issued Date -
Feb 9, 2012
app pub date -
Aug 3, 2010
filing date -
Aug 3, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention provides systems and methods for ESD protection for an integrated circuit (IC) having multi-power domains. The IC comprises a first device in a first power domain having a first power line and a first ground line and a second device in a second power domain having a second power line and a second ground line. A clamp circuit having a first node and a second node is coupled to the first device and the second device to provide cross-domain protection. Alternatively, two clamp circuits are used to couple with the first device and the second device to provide cross-domain ESD protection.
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