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:
Dec. 11, 2007
Filed:
May. 27, 2005
Applicants:
Alan E. Segervall, Half Moon Bay, CA (US);
Vijaya Ceekala, San Jose, CA (US);
Varadarajan Devnath, Santa Clara, CA (US);
James B. Wieser, Pleasanton, CA (US);
Inventors:
Alan E. Segervall, Half Moon Bay, CA (US);
Vijaya Ceekala, San Jose, CA (US);
Varadarajan Devnath, Santa Clara, CA (US);
James B. Wieser, Pleasanton, CA (US);
Assignee:
National Semiconductor Corporation, Santa Clara, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 17/16 (2006.01); H03B 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A serial communication interface driver is provided wherein current steering switches are also used to provide termination impedances. The output voltage can be produced by a voltage-dividing current path between two regulated voltages, which provides improved efficiency.