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:
Jun. 18, 1991
Filed:
Jul. 05, 1988
Heung S Kim, Inchon, KR;
Chan K Myung, Seoul, KR;
Abstract
The present invention relates to a level translator which translates TTL level signals to ECL level. The translating speed is enhanced by making the input circuit of the level translator which receives the TTL data signal composed of an emitter coupled pair such that the circuit does not act in saturation mode. Also, by designing the circuit to make current flow from the pull-up transistor of the TTL transfer through the resistance of the present invention when the TTL data is high level, and to make current flow through the pull-down transistor of the driving TTL circuit into the TTL to ECL level translator when low level, the present invention makes the time delay from the driving TTL circuit to the ECL receiving circuit very small.