ECL circuit with low voltage/fast pull-down

Details ECL circuit with low voltage/fast pull-down ECL circuit with low voltage/fast pull-down

1990-07-31

1991-10-22

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307446, 307456, 307263, 307355, 307530, H03K 1906, H03K 1902

Patent

active

050598279

ABSTRACT:
A logic circuit having an emitter-follower output stage utilizes an active pull-down. An inverter stage generates a signal which drives the active pull-down, eliminating the need to identify a complementary signal in a complex logic implementation. A pre-biasing scheme for the active pull-down provides for fast turn on of the active pull-down device while eliminating the temperature and voltage dependency of the pre-biasing function. Power dissipation is minimized by operating the active pull-down and the pre-biasing network from a reduced power supply voltage.

REFERENCES:
patent: 4724343 (1988-02-01), Le Roux et al.
patent: 4755693 (1988-07-01), Suzuki et al.
patent: 4939393 (1990-07-01), Petty

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