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:
May. 14, 1985
Filed:
Aug. 29, 1983
Cleon Petty, Tempe, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A TTL flip-flop having improved AC and DC characteristics is provided including a higher resistance to output degradation and quicker transition time from a high state to a low state. The flip-flop includes a master section adapted to receive a data input signal and a clock pulse and includes a first output terminal for providing a Q output signal and a second output terminal for providing a Q output signal. A slave section is coupled between the master section and output buffers for latching the Q and Q outputs. The slave section comprises first and second latch portions, each responsive to a signal from the master section and coupled to one of the output buffers. The latch portions are similar and include a first transistor having a collector coupled to one output terminal and an emitter coupled to the master section. A second transistor has a first emitter coupled to the emitter of the first transistor and a third transistor has a collector coupled to the collector of the first transistor. A fourth transistor has a collector coupled to a second emitter of the second transistor and a base coupled to an emitter of the third transistor.