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:
Aug. 02, 2005
Filed:
Jul. 29, 2003
Brian Reed, San Jose, CA (US);
Puneet Sawhney, San Jose, CA (US);
Jayanth Thyamagundlam, Milpitas, CA (US);
Scott T. Becker, Darien, IL (US);
Brian Reed, San Jose, CA (US);
Puneet Sawhney, San Jose, CA (US);
Jayanth Thyamagundlam, Milpitas, CA (US);
Scott T. Becker, Darien, IL (US);
Artisan Components, Inc., Sunnyvale, CA (US);
Abstract
An invention is disclosed for protecting an input buffer. A current from a p-supply to an input buffer is lowered when an input voltage to the input buffer is tolerant HIGH. The p-supply being a Vvoltage supplied to a p-channel transistor in the input buffer. In addition, the p-supply is set to a particular voltage when the input voltage to the input buffer is LOW, the particular voltage being at a specific value such that input transistors within the input buffer do not experience overstress voltages. Optionally, p-supply can be prevented from supplying current to the input buffer when an input voltage to the input buffer is tolerant HIGH.