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:
Sep. 06, 2005
Filed:
Nov. 07, 2003
Applicant:
Mark B. Welty, Denison, TX (US);
Inventor:
Mark B. Welty, Denison, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
H03K017/16 ;
U.S. Cl.
CPC ...
Abstract
A blocking circuit technique achieves very low Ioff and Ioz leakage in low power digital logic devices that incorporate Ioff and overvoltage tolerance. The blocking circuit employs a diode-connected P-channel device in parallel with a PN diode. The diode-connected P-channel device provides enough forward leakage in the subthreshold region to keep Ioz through the upper output driver to a very low level (0.2 uA typical). Further, both the diode-connected P-channel device and the PN diode together provide enough reverse blocking capability to keep Ioff to a very low level (0.2 uA typical).