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:
Aug. 22, 1995
Filed:
Sep. 29, 1993
Diether Sommer, Munchen, DE;
Dominique Savignac, Ismaning, DE;
Siemens AG, Munich, DE;
Abstract
A CMOS input stage for operation with a supply voltage selectively having a first value or a second higher value, includes a supply voltage terminal selectively receiving a first value or a second value of a supply voltage during operation, a reference potential terminal, and an input terminal. A first field effect transistor of a first conduction type has a load path and a gate terminal, and a second field effect transistor of a second conduction type has a load path and a gate terminal. The load paths of the field effect transistors are connected in series between the supply voltage terminal and the reference potential terminal. The gate terminals of the field effect transistors are connected to the input terminal. A control device adjusts a resistance of the load path of at least one of the field effect transistors as a function of a particular value selected for the supply voltage.