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:
Jan. 05, 1988
Filed:
Jan. 02, 1987
Applicant:
Inventor:
William C Dunn, Scottsdale, AZ (US);
Assignee:
SGS Semiconductor Corporation, Phoenix, AZ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ; H03K / ; G05F / ;
U.S. Cl.
CPC ...
307475 ; 307451 ; 307576 ; 307579 ; 307585 ; 307270 ; 323315 ;
Abstract
A TTL compatible CMOS input circuit comprising a series of current mirror circuits arranged so that the input transistor is used to discharge the capacitive load and one of a pair of transistors in one of the current mirror circuits provides charging current for the load. Only one of the charging and discharging transistor switches in 'on' at any one time, thus reducing circuit power consumption and reducing required device sizes. The input switching level is also independent of the supply voltage.