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:
Jul. 03, 1984
Filed:
Jul. 10, 1981
Paul M Solomon, Yorktown Heights, NY (US);
Siegfried K Wiedmann, Stuttgart, DE;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A Transistor-Transistor Logic (TTL) gate is disclosed wherein a different amount of base current is applied to the inverter transistor than is applied to the base of the output transistor. In one embodiment, a current mirror circuit controls the amount of base current flowing between the input transistor collector terminal and the base terminal of the inverter transistor to an amount less than that flowing between the input transistor collector terminal and the base terminal of the output transistor. In another embodiment, a resistor in series with the base of the inverter transistor performs the same function as the current mirror circuit.