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:
Apr. 19, 2011
Filed:
Feb. 29, 2008
Applicants:
Weiye LU, Sunnyvale, CA (US);
Elroy M. Lucero, San Jose, CA (US);
Thomas Tse, Santa Clara, CA (US);
Inventors:
Assignee:
National Semiconductor Corporation, Santa Clara, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03K 17/16 (2006.01); H03K 19/003 (2006.01);
U.S. Cl.
CPC ...
Abstract
In an I/O circuit, noise reduction and power savings are achieved by providing feedback from the output of the I/O driver to control the current through the pre-driver and thereby the current through the driver transistors after a non-zero time delay following a low to high or high to low data signal change.