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:
Mar. 21, 1989
Filed:
Nov. 27, 1987
Gordon H Allen, Gilbert, AZ (US);
Byron G Bynum, Mesa, AZ (US);
David B Harnishfeger, Chandler, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A voltage translator circuit generates a predetermined output voltage (e.g. one half of the supply voltage) in response to a predetermined input voltage. A pair of matched field effect transistors are coupled in series between first and second sources of supply voltage. The gate of the load transistor is coupled to a reference voltage, and the gate of the drive transistor is coupled to a source of input voltage. When both transistors are subject to the same operating conditions (at a predetermined input voltage level), their effective resistances become equal and the supply voltage is divided in half. The circuit does not depend for its operation upon precise threshold voltages of the devices as long as the devices are matched.