The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 22, 1998
Filed:
Sep. 24, 1997
Nazar S Haider, Fremont, CA (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A circuit for protecting internal logic circuits of an integrated circuit (IC) device from a failure of internal voltage supply is disclosed. A protection circuit is connected between the internal power supply and an external power supply. The protection circuit reduces the external power to the internal logic circuits. A pass circuit is connected to the protection circuit and the internal power supply. The pass circuit is configured to reduce the input voltage difference in the protection circuit in the event of a failure of the internal power supply to prevent a failure of the protection circuit. The voltage level of the external power supply is typically higher than the internal supply voltage level, and exposure to the full external voltage level may disable the protection circuit.