ECL-TTL signal level converter

Details ECL-TTL signal level converter ECL-TTL signal level converter

1990-10-09

1991-11-26

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307443, 307264, 307356, 307455, H03K 19092, H03K 19086, H03K 1760

Patent

active

050685503

ABSTRACT:
An ECL-TTL signal level converter includes a first transistor pair having transistors controlled by ECL signals. A second transistor pair is connected to the transistors of the first transistor pair. Collector resistors are connected between the transistors of the second transistor pair and a first supply potential. A third transistor pair has transistors connected to the transistors of the first transistor pair. A fourth transistor pair has transistors connected to the transistors of the first transistor pair and to the transistors of the third transistor pair. A current impressing device is connected between the transistors of the fourth transistor pair and a second supply potential. A push-pull output stage is connected to the transistors of the second transistor pair for the emission of a TTL signal.

REFERENCES:
patent: 4366397 (1982-12-01), Kitamura et al.
patent: 4644194 (1987-02-01), Birrittella et al.
patent: 4684831 (1987-08-01), Kruest
patent: 4939393 (1990-07-01), Petty

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