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NTL with complementary emitter-follower driver: a high-speed low-power push-pull logic circuit

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1 Author(s)
C. -T. Chuang ; IBM Thomas J. Watson Res. Center, Yorktown Heights, NY, USA

A high-speed low-power nonthreshold-logic (NTL)-based push-pull logic circuit, featuring a complementary emitter-follower driver is presented. Compared with the standard NTL circuit, the circuit offers a much better balance between the pull-up and pull-down delay, improved scalability, and superior load driving capability. Simulation results based on a 0.8-μm double-poly. self-aligned complementary bipolar technology indicate that at a power consumption of 1.22 mW/gate, the circuit offers 2.4× improvement in the pull-down delay of a loaded gate and 4.0× improvement in the load driving capability over the standard NTL circuit. The design and scaling considerations of the circuit are discussed

Published in:

IEEE Journal of Solid-State Circuits  (Volume:26 ,  Issue: 4 )