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:
Nov. 20, 1990
Filed:
Nov. 28, 1989
Applicant:
Inventors:
Jose A Lyon, Austin, TX (US);
Paul D Shannon, Austin, TX (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R / ; G06F / ;
U.S. Cl.
CPC ...
5241 / ; 324 731 ; 3241 / ; 371 221 ; 371 226 ; 371 251 ;
Abstract
Transistors in a transistor array constructed in a testable multiple channel decoder are tested by setting the array in a test mode. A stuck low test, which detects an open circuit between a source and drain of a transistor, is executed by providing all address lines a first predetermined logic value. A stuck high test, which detects a short between a source and drain of a transistor, is executed by providing a first address line tested a second predetermined logic value and a second logic address line tested the first logic value.