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:
Jul. 08, 2014
Filed:
Nov. 28, 2012
Applicant:
Lsi Corporation, Milpitas, CA (US);
Inventors:
Mark F. Turner, Longmont, CO (US);
Jay Daugherty, Longmont, CO (US);
Jeff S. Brown, Fort Collins, CO (US);
Marek J. Marasch, Longmont, CO (US);
Assignee:
LSI Corporation, San Jose, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H03L 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed is a diode clamping circuit that is used in an I/O buffer to suppress noise. Diode-connected CMOS transistors or PN junction transistors are utilized, which are native to the CMOS process. Switching circuitry is also disclosed to isolate the diodes and prevent current drain in the circuit. Switching circuitry is also used to switch between two different power supply voltages.