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:
Dec. 22, 1998
Filed:
Dec. 11, 1996
Applicant:
Inventor:
Gerd Rombach, Freising, DE;
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F / ;
U.S. Cl.
CPC ...
327538 ; 326 84 ; 326 86 ; 327108 ; 327109 ; 327432 ;
Abstract
The invention relates to a 'power on demand' control circuit and the application thereof in a BiCMOS bus driver. The basic object resides in the creation of such a circuit with a low power need and a simple structure. This aim is to be solved by the provision of a control loop comprising a diode series circuit arrangement (D1, D2) and a bipolar transistor (Q2) between the collector and the base of the output transistor (Q1), which is of such a size that in the stable L state the base current of the outlet transistor (Q1) is so selected that the L state is maintained.