ECL Integrated circuit

Details ECL Integrated circuit ECL Integrated circuit

1981-12-04

1983-10-18

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307443, 324 73R, H03K 19003, H03K 19086

Patent

active

044108168

ABSTRACT:
An ECL integrated circuit comprises an emitter-follower transistor at the output stage and a pull-down resistor connected to the emitter-follower transistor. The ECL integrated circuit is provided with a test circuit on a line extending from the output of emitter-follower transistor to a subsequent stage so as to cause a test current to flow only at the time of the test. The test current is smaller than the current usually flowing to the pull-down resistor but larger than the current flowing to the subsequent stage.

REFERENCES:
patent: 4074188 (1978-02-01), Boatman et al.
patent: 4156819 (1979-05-01), Takahashi et al.

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