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:
May. 04, 2010
Filed:
Sep. 04, 2008
Ritu Chaba, San Diego, CA (US);
Dongkyu Park, San Diego, CA (US);
Changho Jung, San Diego, CA (US);
Sei Seung Yoon, San Diego, CA (US);
Ritu Chaba, San Diego, CA (US);
Dongkyu Park, San Diego, CA (US);
ChangHo Jung, San Diego, CA (US);
Sei Seung Yoon, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
A level shifting circuit has a pair of assist circuits. The level shifting circuit includes an input point, an output point, a pair of cross-coupled PMOS transistors coupled to the output point, and a pair of NMOS transistors coupled between the input and output points. Each assist circuit includes a pair of PMOS transistors, one responsive to an input applied to the input point, the other responsive to the drain voltage of one of the NMOS transistors. The assist circuits temporarily weaken the cross-coupled PMOS transistors when an input changes from low to high, or from high to low. The assist circuits also transiently boost the output.