Dynamic BiCMOS logic gates

Details Dynamic BiCMOS logic gates Dynamic BiCMOS logic gates

1990-02-20

1992-09-01

Hudspeth, David

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307443, 307452, 307480, H03K 1901

Patent

active

051441632

ABSTRACT:
A dynamic logic gate includes a precharge device for precharging the logic gate in synchronism with a clock; a partial logic gate arranged such that, depending on the logic states of the logic inputs, current is allowed to flow between its two terminals or is cut off; a bipolar transistor whose emitter is grounded, and a discharge device for discharging the charge stored in the base of the bipolar transistor during the precharge period. The logic gate speeds up the logic operation by suddenly discharging the load capacity of the circuitry by supplying the conducting current of the partial logic gate to the bipolar transistor base and using the high speed current amplification action of the bipolar transistor.

REFERENCES:
patent: 4661723 (1987-04-01), Masuda et al.
patent: 4713796 (1987-12-01), Ogiue et al.
patent: 4740718 (1988-04-01), Matsui
patent: 4798981 (1989-01-01), Tsugaru et al.
patent: 4808850 (1989-02-01), Masuda et al.
patent: 4849658 (1989-07-01), Iwamura et al.

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