ESD protection system for multi-power domain circuitry

Details ESD protection system for multi-power domain circuitry ESD protection system for multi-power domain circuitry

2005-10-21

2008-09-02

Sherry, Michael J (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

Reexamination Certificate

active

07420789

ABSTRACT:
The invention discloses an integrated circuit that includes a first device in a first power domain; a second device in a second power domain; and an electrostatic discharge (ESD) bus coupled to the first and second devices for providing a current path to dissipate an ESD current during an ESD event occurring at the first or second device. The ESD bus is disposed across the first and second power domains without having a diode module interposed therebetween, thereby preventing the ESD current from flowing through the first and second devices.

REFERENCES:
patent: 6144542 (2000-11-01), Ker et al.
patent: 6552583 (2003-04-01), Kwong
patent: 6829125 (2004-12-01), Liu et al.
patent: 7136622 (2006-11-01), Rofougaran et al.
patent: 2003/0001199 (2003-01-01), Shibib
patent: 2005/0270712 (2005-12-01), Huang et al.
patent: 2006/0187596 (2006-08-01), Cain et al.

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