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. 08, 1986
Filed:
Sep. 26, 1983
Fujitsu Limited, Kawasaki, JP;
Abstract
A CMIS circuit device such as an IC chip in a semiconductor memory device, is made selectable by using at least two chip-select signals having opposite polarities. The CMIS circuit device has a chip-select control circuit for establishing a chip-selected state or a chip-unselected state upon receiving the abovementioned chip-select signals. The chip-select control circuit includes a CMIS inverter circuit which inverts one of the chip-select signals, and a CMIS logic gate circuit which receives an output signal from the CMIS inverter circuit and the other chip select signal or signals and outputs an internal chip-select control signal. The CMIS inverter circuit includes a CMIS inverter and one or more control transistors which receive the other chip-select signal or signals at the gates thereof and which are inserted in series between a power terminal of the CMIS inverter and a power source.