Electro static discharge clamping device

Details Electro static discharge clamping device Electro static discharge clamping device

2011-07-19

2011-07-19

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

C360S323000, C361S056000

Reexamination Certificate

active

07982523

ABSTRACT:
Electrostatic discharge clamp devices are described. In one embodiment, the semiconductor device includes a first transistor, the first transistor including a first source/drain and a second source/drain, the first source/drain coupled to a first potential node, the second source/drain coupled to a second potential node. The device further includes a OR logic block, a first input of the OR logic block coupled to the first potential node through a capacitor, the first input of the OR logic block being coupled to the second potential node through a resistor, and a second input of the OR logic block coupled to a substrate pickup node of the first transistor.

REFERENCES:
patent: 4855620 (1989-08-01), Duvvury et al.
patent: 5191244 (1993-03-01), Runaldue et al.
patent: 5502317 (1996-03-01), Duvvury
patent: 6249410 (2001-06-01), Ker et al.
patent: 7289307 (2007-10-01), Ker et al.
patent: 7403362 (2008-07-01), Lee et al.
patent: 2009/0040668 (2009-02-01), Chen et al.

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