Abstract

A novel BiCMOS logic circuit is described that provides high-speed rail-to-rail operation with only one battery cell (1–1.5 V). The proposed circuit utilises a novel pull-down scheme that involves bootstrapping the base of the pull-down pnp bipolar junction transistor to a negative potential during the pull-down transient period. Circuit simulations have shown that the proposed circuit outperforms the transient-saturation full-swing BiCMOS and the bootstrapped bipolar CMOS circuits in terms of delay, power and cross-over capacitance for all simulated supply voltages.

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