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. 27, 1987
Filed:
Oct. 03, 1986
Michael G Gallup, Austin, TX (US);
Kevin L McLaughlin, Chandler, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A BICMOS three state gate is provided having high noise immunity, low power requirements, high drive capability, and good output signal switching characteristics. A first bipolar transistor has its collector-emitter path coupled between a first voltage terminal and an output terminal. A second bipolar transistor has its collector-emitter path coupled between the output terminal and a second voltage terminal. A first MOS circuit is coupled between first and second voltage terminals and to the first input terminal and a base of the first bipolar transistor for biasing the first bipolar transistor. A second MOS circuit is coupled between the base of the first bipolar transistor and the second voltage terminal and to the first input terminal and a base of the second bipolar transistor for biasing the second bipolar transistor. A third MOS circuit is coupled between a second input terminal and both of the first and second MOS circuits for disabling the first and second bipolar transistors.