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:
Feb. 20, 1996
Filed:
Aug. 16, 1993
Applicant:
Inventor:
Ernest Allen, III, Santa Cruz, CA (US);
Assignee:
Altera Corporation, San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R / ; G06F / ;
U.S. Cl.
CPC ...
364579 ; 324 731 ; 371 27 ;
Abstract
A circuit that provides for digitally programmable high voltage drive, as well as fast current limiting capability for testing of integrated circuits. The circuit also provides for digitally programmable slew rate control for controlling the rise and fall times of an output voltage. Integrated circuits requiring low voltage and high voltage tests at different speeds and with different current limiting conditions, or low and high current forcing with different voltage clamp levels, or a mixture of the two can be tested in a single continuous test pattern using the circuit of the present invention.