Symmetrical integrated injection logic circuit

Details Symmetrical integrated injection logic circuit Symmetrical integrated injection logic circuit

1977-10-28

1979-07-31

Larkins, William D.

357 36, 357 20, 357 46, 357 92, H01L 2704

Patent

active

041632443

ABSTRACT:
The invention relates to an improved integrated injection logic circuit suitable for large scale integration. In integrated injection logic the fundamental circuit unit is a bipolar transistor having a unitary base and a unitary emitter with a plurality of electrically separate collectors used in combination with a complementary bipolar transistor for base current injection. Typically, the collector of the injector is integral with the base of the first transistor. By a novel symmetric arrangement of the individual collectors in respect to both base contacts and injectors, the response of the individual collectors is closely matched even at relatively high current levels.

REFERENCES:
patent: 3736477 (1973-05-01), Berger et al.
patent: 3961351 (1976-06-01), Blatt
patent: 3993918 (1976-11-01), Sinclair
patent: 4084174 (1978-04-01), Crippen et al.
Blatt et al., "Substrate Fed Logic," IEEE J. of Solid-State Circuits, vol. SC-10, No. 5, Oct. 1975, pp. 336-342.
DeTroye, "Integrated Injection Logic . . . ," IEEE J. of Solid-State Circuits, vol. SC-9, No. 5, Oct. 1974, pp. 206-211.
Kerns, "Effect of Base Contact Position . . . , " IEEE J. of Solid-State Circuits, vol. SC-11, No. 5, Oct. 1976, pp. 712-717.

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