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:
May. 17, 1994
Filed:
Jun. 04, 1992
Koichi Hasegawa, Itami, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A voltage reduction circuit is electrically inserted between between a first power supply pad and a power source voltage supplying portion of a bipolar circuit part. Receiving a control signal from a CMOS circuit part, the voltage reduction circuit reduces a power source voltage given thereto via the power supply pad, thereby producing a reduced power source voltage and outputting the reduced power source voltage to the power source voltage supplying portion of the bipolar circuit part. Hence, even though the same power source voltage is commonly supplied to the power supply pads of the bipolar circuit part and the CMOS circuit part via the same external power source pin, one of the bipolar circuit part and the CMOS circuit part receives the reduced power source voltage from the voltage reduction circuit. Thus, it is possible that a power source voltage to the CMOS circuit part and a power source voltage to the bipolar circuit part are different without increasing the number of external power source pins.