ESD protection circuit

Details ESD protection circuit ESD protection circuit

2006-11-13

2010-06-29

Fureman, Jared J (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

Reexamination Certificate

active

07746609

ABSTRACT:
An ESD (Electro-Static Discharge) protection circuit includes a detection unit for detecting a rising time of a signal flowing into a first and a second power lines; a pre-driver for buffering an output signal of the detection unit; and a power clamp which operates in response to an output signal of the pre-driver and connects the first and the second power lines each other. The detection unit includes: an RC filter connected in series between the first and the second power lines; a first inverter for inverting an output of the RC filter; and a first capacitor, connected between the first power line and a source end of a first transistor of the first inverter, for preventing a leakage current from flowing through the first transistor and a second transistor of the first inverter when a power noise is applied to the first and the second power lines.

REFERENCES:
patent: 5744842 (1998-04-01), Ker
patent: 5789964 (1998-08-01), Voldman
patent: 5946177 (1999-08-01), Miller et al.
patent: 7183868 (2007-02-01), Wessendorf
patent: 2005/0219782 (2005-10-01), Chen
patent: 1240403 (2004-04-01), None
patent: 1233210 (2005-05-01), None

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