Differential ECL bus tri-state detection receiver

Details Differential ECL bus tri-state detection receiver Differential ECL bus tri-state detection receiver

1990-05-21

1990-12-25

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307455, 307355, H03K 19086

Patent

active

049805819

ABSTRACT:
A circuit having first and second inputs and first and second outputs includes a differential receiver circuit responsive to the first and second inputs for providing corresponding output logic signals at the first and second outputs. A tri-state detection circuit responsive to the first and second inputs and having an output for providing a first predetermined voltage to the differential receiver circuit when the first and second inputs are in a normal mode and for providing an increased second predetermined voltage to the differential receiver circuit when the first and second inputs are in a tri-state mode wherein oscillation of the differential receiver circuit is prevented and the outputs are forced to known logic states while the noise margin of the differential receiver is increased without a sacrifice in common mode range.

REFERENCES:
patent: 4424457 (1984-01-01), Leuthold
patent: 4546272 (1985-10-01), Suzuki et al.
patent: 4587444 (1986-05-01), Emori et al.

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