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:
May. 09, 1989
Filed:
Oct. 22, 1987
Applicant:
Inventors:
Mark G Johnson, Dallas, TX (US);
Ronald T Taylor, Irving, TX (US);
Assignee:
SGS-Thomson Microelectronics, Inc., Carrollton, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ; G11C / ; H03K / ;
U.S. Cl.
CPC ...
365200 ; 36523006 ; 307451 ; 3072021 ;
Abstract
A decoder circuit for disabling a defective element in a circuit having redundant replacement elements employs a fuse on a signal path through the decoder circuit from a selection device to a low-impedance output device and a weak default circuit, such as a pull-up transistor, for forcing the state of the output circuit to a low-impedance default state when the fuse is blown.