Floating well circuit operable in a failsafe condition and a...

Details Floating well circuit operable in a failsafe condition and a... Floating well circuit operable in a failsafe condition and a...

2011-01-25

2011-01-25

Luu, An T (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C327S112000, C327S534000, C326S014000

Reexamination Certificate

active

07876132

ABSTRACT:
A circuit includes a first comparator block configured to output a voltage equal to a higher of a supply voltage and a bias voltage, a second comparator block configured to output a voltage equal to a higher of the bias voltage and an external voltage supplied through an Input/Output (IO) pad, and a third comparator block configured to output a voltage equal to a higher of the output of the first comparator block and the output of the second comparator block. A voltage across one or more constituent active element(s) of each of the first comparator block, the second comparator block, and the third comparator block is within an upper tolerable limit thereof during each of a normal operation, a failsafe operation, and a tolerant operation.

REFERENCES:
patent: 7276957 (2007-10-01), Bhattacharya et al.
patent: 7362145 (2008-04-01), Takemura et al.
patent: 2006/0170054 (2006-08-01), Mergens et al.
patent: 2009/0027089 (2009-01-01), Hebenstreit

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