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:
Aug. 04, 1987
Filed:
Nov. 14, 1985
Applicant:
Inventor:
Hiep V Tran, Carrollton, TX (US);
Assignee:
Thomson Components-Mostek Corp., Carrollton, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365203 ; 365190 ; 365200 ; 365201 ;
Abstract
A circuit for detecting a short circuit in a SRAM memory cell (10) includes means for connecting the nodes (21, 23) of the memory cell to the gates of a pair of pulldown transistors (66, 68). The pulldown transistors perform a level-shifting function to produce a voltage pattern that has one high node and one low node (72, 74) for a normal cell and two intermediate voltage nodes for a shorted cell. A following logic circuit (76) responds to the voltage pattern to produce an output voltage that has one value when the cell is functioning correctly and another value when the cell is shorted.