ROOM-TEMPERATURE RESONANT-TUNNELING BIPOLAR-TRANSISTOR XNOR AND XOR INTEGRATED-CIRCUITS

The first resonant tunnelling bipolar transistor integrated circuits o perating at room temperature are demonstrated. The circuits are compos ed of cointegrated resonant tunnelling bipolar transistors and double heterojunction bipolar transistors bawd on InP substrates. Both a thre e-transistor XNOR and a seven-transistor XOR logic gate have been demo nstrated using a 3 V power supply.