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. 14, 1998
Filed:
Feb. 18, 1997
Applicant:
Inventors:
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
371 221 ; 371 222 ; 371 2231 ;
Abstract
A circuit (100) comprises a built-in test circuit (150) which verifies the proper operation of input cells (130) when they receive signals at a first level (71) and at a second level (72). The test circuit (160) comprises a first and a second logic (110, 120) which receive power only when a test is performed. Thereby power consumption of the test circuit (160) is reduced. The first and the second logic (110, 120) are conveniently formed by a combination of parallel coupled transistors acting in an logical OR-function.