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:
Oct. 22, 1991
Filed:
Jul. 31, 1990
Applicant:
Inventors:
M Nghiem Phan, Mesa, AZ (US);
William R Blood, Jr, Phoenix, AZ (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
307455 ; 307446 ; 307456 ; 307263 ; 307355 ; 307530 ;
Abstract
A logic circuit having an emitter-follower output stage utilizes an active pull-down. An inverter stage generates a signal which drives the active pull-down, eliminating the need to identify a complementary signal in a complex logic implementation. A pre-biasing scheme for the active pull-down provides for fast turn on of the active pull-down device while eliminating the temperature and voltage dependency of the pre-biasing function. Power dissipation is minimized by operating the active pull-down and the pre-biasing network from a reduced power supply voltage.