Motorola Corporation

C Christopher Hanke

Ray D Sundstrom

A circuit for generating precise, phase shifted, CMOS level output signals with respect to an input data signal has been provided. The circuit utilizes a phase-locked loop for generating a precise clock signal. This precise clock signal is then utilized to clock a plurality of serially-coupled flip-flops wherein two-times the input data signal is applied to the data input of the first serially-coupled flip-flop. The outputs of the serially-coupled flip-flops are ECL signals which are then translated to CMOS level signals via ECL-CMOS translators. Finally, the output signals of the translators are respectively used to clock divide-by-two configured flip-flops in order to provide the plurality of precise, phase shifted CMOS output signals. The plurality of precise, phase shifted, CMOS output signals have a 50% duty cycle and represent phase shifted versions of the input data signal wherein the minimum time delay between signals is substantially equal to the period of the precise clock signal.

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Mesa, AZ, United States of America

C Christopher Hanke