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:
Feb. 07, 1995
Filed:
Jan. 13, 1992
Hitachi, Ltd., Tokyo, JP;
Abstract
A semiconductor integrated circuit device includes an interface corresponding to a relatively high signal level; an interface corresponding to a relatively low signal level; and an internal circuit made responsive to a signal through either interface for generating a signal to be transmitted to the other interface. The interface corresponding to a relatively high level, the internal circuit, and a drive control circuit constituting the input circuit and output circuit of the interface corresponding to a relatively low level are operated by an operating voltage corresponding to the relatively high level. An output element of the output circuit in the interface corresponding to a relatively low level, which is to be driven by the drive control circuit, is operated by an operating voltage corresponding to the relatively low level.