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:
Nov. 03, 1987
Filed:
Jan. 31, 1985
Bobby D Strong, Garland, TX (US);
Robert C Martin, Dallas, TX (US);
Kevin M Ovens, Garland, TX (US);
James F Salzman, Dallas, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
The specification discloses an input transistor (14) which is variable between high and low impedance states in response to input voltage transitions at terminal 10. An output transistor (16) is coupled to the input transistor (14) and is responsive to an input transition at terminal 10 for changing impedance states. Circuitry including a speed up transistor (44) is coupled between the input transistor (14) and output transistor (16) for applying added current to the output transistor (16) to speed the change of impedance state. The circuitry applies added current to output transistor (16) until the output voltage at terminal (18) falls below twice the base-emitter voltage of the output transistor (16).