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. 15, 1994
Filed:
May. 06, 1992
Applicant:
Inventors:
Carlos D Obregon, Phoenix, AZ (US);
Eric D Neely, Mesa, AZ (US);
Michael A Wells, Chandler, AZ (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ; H03K / ; H03K / ;
U.S. Cl.
CPC ...
307570 ; 307446 ; 307456 ; 307443 ;
Abstract
A plurality of transistors (22, 23, 27) are utilized to provide a low noise high-to-low transition (40) on an output (19) of a circuit (10). The transistors (22, 23, 27) are sequentially enabled to vary a rate of change of output current thereby minimizing noise created by the high-to-low transition (40). A first transistor (22) is enabled to provide a low rate of change. Subsequently, a second transistor (23) is enabled to provide a higher rate of change. Then, just prior to disabling the second transistor (23) a third transistor (27) is enabled to provide a d.c. level.