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.

Date of Patent:
Jul. 30, 1991

Filed:

Jun. 02, 1989
Applicant:
Inventors:

Norman T Rollins, Plantation, FL (US);

Gianfranco Gerosa, Austin, TX (US);

Assignee:

Motorola, Inc., Schaumburg, IL (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
3072722 ; 307291 ; 377117 ;
Abstract

A master-slave flip-flop having a first bistable cell and a control circuit coupled to that first cell for changing the binary state of the cell in response to a set of complementary data inputs and a clock signal. The slave portion of the flip-flop includes a second bistable cell that is coupled to the first cell and a second control circuit for changing the state of the second cell in response to the output of the first cell and to a clock signal. The flip-flop is intended to be implemented using CMOS technology, and is capable of performing at frequencies greater than a gigahertz with low power consumption. The circuit configuration is highly symmetric, so that the master and slave portions may be interchanged.


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