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. 21, 1989
Filed:
Nov. 20, 1987
Aurangzeb K Khan, San Bruno, CA (US);
Tandem Computers Incorporated, Cupertino, CA (US);
Abstract
The present invention provides a high speed low power electrical circuit for converting true TTL level signals to true ECL level signals. The circuit only has a single buffer delay with some small additional delay due to an input emitter follower stage. The circuit includes a clamped, switched emitter follower which acts as a level shifting comparator; a self-centering reference threshold translator; a clamped level shifted input translator; and, an ECL Buffer Driver. The circuit also includes a TTL reference and an ECL reference which are tied together. If the TTL reference level shifts slightly due to temperature changes, supply voltage shifts or other factors, the ECL voltage reference will automatically shift by an appropriate percentage to compensate for the original shift in the TTL reference.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile