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. 05, 1983
Filed:
Feb. 18, 1981
John J Price, Jr, Mesa, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A circuit for use with interface systems for providing a threshold setting function wherein the system can be made to interface with T.sup.2 L or CMOS logic with either 5 or 15 volt power supply capabilities. The circuit comprises a pair of matched resistors coupled in series to one another. The first one of the resistors is returned to a select terminal via a first pair of diodes. The second resistor is returned to a terminal at which may be supplied a ground reference potential via a second pair of diodes. A source of current is provided that is coupled to the interconnection of the second resistor with the second pair of diodes. A threshold output is provided to the interface system at the interconnection between the serially connected resistors.