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:
Feb. 18, 1992
Filed:
Apr. 02, 1990
Robert J Amedeo, Austin, TX (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A pre-driver stage includes two pairs of series-stacked transistors for responding to input stage outputs and provides first and second outputs to an output driver stage. The first output becomes low at a certain delay period after the second output becomes low, and the second output becomes high at a certain delay period after the first output becomes high. Therefore, the turn-off of the active driver transistor is completed before the turn-on of the opposite output transistor, inhibiting an overlap current. In another form, the buffer circuit also uses assist transistors placed near the driver transistors for assisting the opposite driver transistors in turning off.