High-speed logic gate with two complementary transistors and saturable resistors

Claim 1

A logic gate comprising: first and second solid state components, each component comprising first and second complementary transistors integrated upon one and the same substrate and having respective emitters, bases and collectors, the first transistor having for its base a portion of the collector of said second transistor, and for its collector, the base of said second transistor, said second transistor having its base diffused into its collector, and its emitter into its base, said components having each a first, a second and a third terminal, connected respectively to the emitter of said first transistor, to the base of said second transistor and to the emitter of said second transistor, said first terminals having first connections to ground, said second terminal of said first component having a second connection to ground, and a fixed voltage dropper for connection to the second terminal of said second component, means for connecting a two level voltage to said third terminal of said first component, and second and third connections for connecting to fixed d.c. voltages said second and said third terminal of said second component.