Abstract of the Disclosure

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 unitary base and unitary emitter with a plurality of electrically separate collectors used in combination with a complimentary 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.

• an expanded lumped equivalent circuit representation of a portion of the circuit designed to illustrate the symmetry achieved

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3,736,477  05/1973  Berger et al
3,961,351  06/1976  Blatt
3,993,918  11/1976  Sinclair
4,084,174  04/1978  Crrippen et al