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.

Date of Patent:
Jan. 18, 1983

Filed:

Jul. 11, 1980
Applicant:
Inventors:

Keizo Okamoto, Sagamihara, JP;

Masayoshi Tomita, Kawasaki, JP;

Osamu Takagi, Tokyo, JP;

Assignee:

Fujitsu Limited, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
307279 ; 307290 ;
Abstract

A CMOS Schmitt-trigger circuit for shaping the wave form of an input signal to be applied to logic circuits, such as flip-flops, counters, etc. The CMOS Schmitt-trigger circuit has an input terminal connected to a signal source, and comprises a first CMOS inverter, a second CMOS inverter connected in cascade to the first CMOS inverter, a third CMOS inverter connected in cascade to the second CMOS inverter, and a feedback resistance connected between the output end of the third CMOS inverter and the input end of the second CMOS inverter. The schmitt width of the CMOS Schmitt inverter according to the present invention has less dependency on the impedance of the input signal source than the prior-art devices do.


Find Patent Forward Citations

Okamoto, Keizo. (1983). Cmos schmitt-trigger circuit (U.S. Patent No. 4369381). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4369381

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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