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:
Feb. 14, 1989
Filed:
Mar. 09, 1987
John R Spence, Villa Park, CA (US);
Rockwell International Corporation, El Segundo, CA (US);
Abstract
A simplified CMOS toggle flip-flop includes a flip-flop that has an input and an output, and a toggle circuit that includes an inverter having an input connected to the flip-flop output, a transfer switch connected between the inverter output and the flip-flop input, and a toggle control responsive to an input toggle signal for closing the transfer switch to connect the inverter output to the flip-flop input to transfer the inverted flip-flop output state to the flip-flop input. The transfer switch may include an NFET having its conduction path connected between the inverter output and the flip-flop input, and having a control gate. The toggle control may include a NAND gate having a first input for receiving a toggle pulse and a second input for receiving a timing pulse, and having an output. A second inverter has an input connected to the NAND gate output and an output connected to the NFET control gate of the transfer switch.