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:
Mar. 25, 1997
Filed:
Jan. 12, 1994
Applicant:
Inventor:
Alessio Pennisi, Milan, IT;
Assignee:
SGS-Thomson Microelectronics S.r.l., Agrate Brianza, IT;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
327311 ; 327207 ; 327432 ; 327552 ;
Abstract
A time delay filter includes at least one field-effect transistor of the MOS type and at least one bipolar transistor having their respective base and gate terminals connected together. The bipolar transistor is coupled to an input terminal through a drive transistor, and the field-effect transistor is coupled to an output terminal. The charge time for the gate capacitance of the field-effect transistor, using the low base current of the bipolar transistor, enables high-frequency noise to be filtered out of input digital signals.