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:
Jan. 31, 1995
Filed:
Mar. 30, 1993
Applicant:
Inventors:
Randy C Steele, Folsom, CA (US);
Mike Allen, Rescue, CA (US);
Assignee:
Intel Corporation, Santa Clara, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
326 37 ; 326 82 ;
Abstract
A specialized output buffer circuit which obviates the need to utilize a separate multiplexer to determine polarity selection and output type selection in a programmable logic device is disclosed. In accordance with the present invention, these determinations are made in a specialized output buffer circuit. A sum of product term, a complement of the sum of product term, a registered version of the sum of product term, and a complement of the registered version of the sum of product term, are coupled directly to the output buffer circuit, wherein one of these signals is selected and coupled to an output pin.