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:
Sep. 03, 1991
Filed:
Feb. 23, 1989
Applicant:
Inventors:
Dezso Takacs, Munich, DE;
Josef Winnerl, Landshut, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ; H01L / ; H01L / ;
U.S. Cl.
CPC ...
3072962 ; 3073032 ; 357 236 ; 357 42 ;
Abstract
An integrated circuit in complementary circuit technology comprises a substrate bias voltage generator which reverse biases the substrate, into which tubs of opposite conductivity are inserted. The source regions of the field effect transistors arranged in the substrate lie at ground potential. In order to avoid 'latch-up' effects, the output of the substrate bias voltage generator is connected by way of an electronic switch to a circuit point lying at ground potential, whereby the switch is driven via the output of the substrate bias voltage generator.