Differential, mixed swing, tristate driver circuit for high perf

Electronic digital logic circuitry – Interface – Current driving

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326 86, 326 56, 327391, H03K 190185

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active

059864737

ABSTRACT:
A driver to provide low voltage swings on a bus with fast switching times, the driver comprising two pairs of pullup and pulldown nMOSFETs, each pair operated in complementary fashion to each other, each pair with a high voltage rail at a smaller voltage than the data input logic HIGH voltage, and where each substrate of the nMOSFETs are biased so as to reduce their threshold voltages.

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patent: 5491432 (1996-02-01), Wong et al.
patent: 5594696 (1997-01-01), Komarek et al.
patent: 5656970 (1997-08-01), Campbell et al.
patent: 5661414 (1997-08-01), Shigehara et al.
patent: 5821805 (1998-10-01), Jinbo
"Sub-1-V Swing Internal Bus Architecture For Future Low-Power ULSI's", Nakagome, et al., IEEE Journal of Solid-State Circuits, vol. 28, No. 4, Apr. 1993.
Exploring the Design Space of Mixed Swing QuadRail for Low-Power Digital Circuit, Krishnamurthy, et al., IEEE Transactions On Very Large Scale Integration, vol. 5, No. 4, Dec. 1997.

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