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:
Jul. 01, 1997
Filed:
Mar. 12, 1996
Applicant:
Inventor:
Katsumi Kusaba, Kyoto, JP;
Assignee:
Rohm Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F / ;
U.S. Cl.
CPC ...
323315 ; 323316 ;
Abstract
An ECL output circuit includes an emitter differential pair of transistors, a positive voltage source connected to the collectors of this pair of transistors, a reference voltage source, a constant current supplying circuit, and an output circuit. The emitter differential pair of transistors has their emitters connected together, the base of one of them is connected to an input terminal where an input voltage is adapted to be applied, the reference voltage source is adapted to apply a reference voltage to the base of the other of the pair of transistors, and the positive voltage source is connected to their collectors.