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:
Jun. 25, 1991
Filed:
Oct. 04, 1989
Applicant:
Inventors:
Eric D Neely, Mesa, AZ (US);
Perng Hsyng, Gilbert, AZ (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ; H03K / ;
U.S. Cl.
CPC ...
307456 ; 307473 ; 307540 ; 307546 ; 307555 ;
Abstract
A TTL output driver is provided which increases the high level of the output signal thereof. The first and second emitters of a first transistor are coupled to the collector and base of a second transistor, respectively, the emitter and collector of which are coupled to the output of the TTL output driver and through a series combination of diode and resistor to a source of operating potential respectively. The output voltage is increased by reducing the base current drive of the first transistor required to achieve the desired output current.