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:
Oct. 02, 1984
Filed:
May. 05, 1983
Applicant:
Inventor:
Glenn E Noufer, Colorado Springs, CO (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ; H03K / ;
U.S. Cl.
CPC ...
307475 ; 3072 / ; 307354 ; 307579 ;
Abstract
A CMOS level shifter with a reference voltage generator provides a TTL to CMOS input buffer. The reference voltage generator provides a reference voltage which is responsive to the voltage level of the TTL input signal. The reference voltage is kept sufficiently low to prevent an input P channel transistor from turning on when the TTL input signal is at a logic high even when the voltage level is at a minimum for a logic high.