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. 01, 2009
Filed:
Dec. 03, 2007
Applicants:
Richard C. LI, Cupertino, CA (US);
Phillip A. Young, Albuquerque, NM (US);
James A. Walstrum, Jr., San Jose, CA (US);
Inventors:
Richard C. Li, Cupertino, CA (US);
Phillip A. Young, Albuquerque, NM (US);
James A. Walstrum, Jr., San Jose, CA (US);
Assignee:
XILINX, Inc., San Jose, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03K 19/0175 (2006.01);
U.S. Cl.
CPC ...
Abstract
An output circuit allows the slew rate of its output signal to be selectively adjusted. The output driver circuit includes an output driver and pre-driver circuits. The output driver includes an output transistor coupled between a first supply voltage and the output terminal. The pre-driver circuit selectively adjusts a series resistance between the output transistor's gate and a second supply voltage in response to mode control signals.