Logic circuit using resonant-tunneling transistor

Details Logic circuit using resonant-tunneling transistor Logic circuit using resonant-tunneling transistor

G - Physics

11

C

328/146, 328/70

G11C 11/34 (2006.01) G11C 11/36 (2006.01) G11C 11/39 (2006.01) G11C 11/56 (2006.01) H03K 3/36 (2006.01) H03K 23/00 (2006.01)

Patent

CA 1291224

ABSTRACT, OF THE DISCLOSURE A logic circuit including: a resonant-tunneling transistor including a superlattice containing at least one quantum well layer, and a constant current source operatively connected between a base and an emitter of the transistor and supplying a constant current to said base. The transistor has a differential negative- resistance characteristic with at least one resonant point in a relationship between a current flowing in the base and a voltage between the base and emitter, and having at least two stable base current values at both sides of the resonant point on the characteristic defined by the changeable base.emitter voltage. By supplying the base.emitter voltage having an amplitude of at least two amplitudes corresponding to the stable base current values, the transistor holds data corres- ponding to the base.emitter voltage. The above latch circuit may be applied to a memory cell and a frequency divider. The resonant-tunneling transistor may be a resonant-tunneling hot electron transistor (RHET) or a resonant-tunneling bipolar transistor (RBT).

520112

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