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:
Apr. 02, 1991
Filed:
May. 17, 1990
Michael Stegherr, Neubiberg, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
A CMOS-ECL converter contains a drive stage modified from the prior art and a connected output transistor. The driver stage comprises a resistor element and an n-channel field effect transistor. The resistor element can preferably be constructed with the assistance of a p-channel field effect transistor and is connected in series with the n-channel field effect transistor. The advantage of such an arrangement is that the capacitive load at the input of the CMOS-ECL converter is low because the resistor element or, respectively, the p-channel field effect transistor, offers no contribution to such an input load. The channel width of the p-channel field effect transistor can be set such that an adequately-high base current for the bipolar output transistor can be supplied.