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. 07, 2015
Filed:
Oct. 01, 2013
Applicant:
Texas Instruments Incorporated, Dallas, TX (US);
Inventors:
Devraj Matharampallil Rajagopal, Bangalore, IN;
Rajagopalan P, Bangalore, IN;
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03K 19/007 (2006.01); H03K 19/0185 (2006.01);
U.S. Cl.
CPC ...
H03K 19/007 (2013.01); H03K 19/018521 (2013.01);
Abstract
An input/output (IO) circuit powered by an input/output (IO) supply voltage. The IO circuit includes a supply detector cell that detects a core supply voltage and generates a supply detect signal. A driver circuit is connected to a PAD and the driver circuit receives the supply detect signal. A failsafe circuit receives a PAD voltage. The failsafe circuit and the supply detector cell controls a leakage current from the PAD based on the IO supply voltage and the PAD voltage.