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. 01, 2000
Filed:
Jun. 12, 1997
Tetsushi Hada, Tokyo, JP;
Mitsubishi Electric Engineering Co., Ltd., Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
There is provided emitter coupled logic (ECL) circuitry comprising a differential amplifier circuit for receiving an input signal and a reference potential Vbb, and for causing an output circuit to make a transition to its high state by charging a parasitic capacitor which is parasitic in the output circuit, and make a transition to its low state by discharging a charge stored in the parasitic capacitor to a potential Vtt by way of a load resister, according to whether or not the level of the input signal is larger than the reference potential Vbb, and a discharge switching circuit which can switch to its conductive state in response to a control signal applied thereto so that the charge stored in the parasitic capacitor is also discharged to the negative potential Vee by way of the discharge switching circuit.