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:
Jun. 24, 2008
Filed:
Oct. 30, 2007
Pradip Bose, Yorktown Heights, NY (US);
Jeonghee Shin, Los Angeles, CA (US);
Victor Zyuban, Yorktown Heights, NY (US);
Pradip Bose, Yorktown Heights, NY (US);
Jeonghee Shin, Los Angeles, CA (US);
Victor Zyuban, Yorktown Heights, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An apparatus for extending lifetime reliability of CMOS circuitry includes a first switching device between a logic high supply rail/logic low supply rail, and a virtual supply rail coupled to the CMOS circuitry. In a first mode of operation the first switching device supplies the full voltage value between the logic high supply rail and the logic low supply rail, and in a second mode of operation, the first switching device isolates the virtual supply rail from the logic high supply rail/logic low supply rail, thereby reducing the voltage supplied to the CMOS circuitry. A second switching device coupled between the virtual supply rail and the logic low supply rail/logic high supply rail, in a third mode of operation, equalizes the voltage on the virtual supply rail and the logic low supply rail/logic high supply rail.