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:
May. 28, 1991
Filed:
Mar. 12, 1990
Applicant:
Inventors:
Steven K Skoog, Colorado Springs, CO (US);
Ernest W Cordan, Jr, Colorado Springs, CO (US);
Assignee:
NCR Corporation, Dayton, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
307270 ; 307443 ; 307475 ; 307263 ; 3072965 ; 320 851 ;
Abstract
An integrated circuit driver for high and low lines in a bus. The driver comprises first and second current sources connected to high and low voltage sources, respectively, and first and second transistor circuits for blocking voltage spikes higher or lower than the voltages provided by the high and low voltage sources. The first current source and the first transistor circuit are series connected between the high voltage supply and the high line, and the second current source and the second transistor circuit are series connected between the low voltage source and the low line.