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This paper introduces a new reduced swing logic style called dynamic current mode logic (DyCML) that reduces both gate and interconnect power dissipation. DyCML circuits combine the advantages of MOS current mode logic (MCML) circuits with those of dynamic logic families to achieve high performance at a low-supply voltage with low-power dissipation. Unlike CML circuits, DyCML gates do not have a static current source, which makes DyCML a good candidate for portable devices and batterypowered systems. Simulation and test results show that DyCML circuits are superior to other logic styles in terms of power and delay. A 16-bit DyCML carry look-ahead adder (CLA), fabricated in 0.6-m CMOS technology, attains a delay of 1.24 ns and dissipates 19.2 mW at 400 MHz.

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