CMOS Schmitt trigger with independently biased high/low threshold circuits

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United States of America Patent

PATENT NO 4859873
SERIAL NO

07074905

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A Schmitt trigger circuit with independently biased threshold sections includes a drive disabling switch for blocking one of the threshold sections from driving a logic node toward a predetermined logic state. The drive disabling switch is selectively operated so that unidirectional sensitivity to the crossing of a threshold level belonging to its corresponding one threshold section is obtained.

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Patent Owner(s)

Patent OwnerAddress
BANKBOSTON N A AS AGENT100 FEDERAL STREET A NATIONAL BANKING ASSOCIATION BOSTON MA 02110

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hull, Richard W Laguna Hills, CA 19 1714
O'Shaughnessy, Timothy G Norco, CA 21 558

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