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:
Mar. 04, 1980
Filed:
May. 01, 1978
Applicant:
Inventor:
Richard W Ulmer, Austin, TX (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ; H03K / ; H03K / ;
U.S. Cl.
CPC ...
307264 ; 307205 ; 307215 ; 307270 ; 307304 ; 307D / ;
Abstract
A CMOS circuit having high voltage capability is provided. At least one P channel transistor is coupled between a first voltage node and an output of the circuit. At least two N channel transistors are coupled in series between the output of the circuit and a second voltage node. The at least two N channel transistors each have a separate tub which is connected to the source of each respective N channel transistor. This arrangement of the N channel transistors provides at least one tub which is isolated from the voltage nodes when the output of the circuit is at a potential substantially equal to a voltage present at the first voltage node.