Importance

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Abstract

A dynamic logic circuit comprising a plurality of unit dynamic logic circuits sequentially coupled in a multiple-stage fashion, each of which unit dynamic logic circuits including: a logic circuit portion formed by one or more than one MOS transistors; a first MOS transistor for a precharging or a pre-discharging operation with respect to the logic circuit; and a second MOS transistor to enable the logic circuit a discharging or a charging operation; wherein the MOS transistors composing the logic circuit portion are configured by low-threshold MOS transistors; and the second MOS transistor to enable the discharging or charging operation is composed of a high-threshold MOS transistor. The dynamic circuit is applied to a plural stage of combinational circuits in a self-timed pipelined datapath system, whereby a static leakage current at charging or pre-discharging operation can be reduced, resulting in decrease of power dissipation.

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First Claim