Resonant tunneling diode/HBT D-flip flop ICs using current mode logic-type monostable-bistable transition logic element with complementary outputs

Abstract

A current mode logic (CML)-type resonant tunneling diode (RTD)heterojunction bipolar transistor (HBT) monostable-bistable transition logic element (MOBILE) IC with complementary Outputs is proposed, which can simplify logic designs on the basis of complementary logic operation. Using the CML-type Current modulator in the MOBILE IC, both the noninverted and inverted outputs are simultaneously generated with a single input signal. The CML-type MOBILE IC with complementary outputs has been fabricated using an InP-based RTD/HBT technology. and the operation of the fabricated circuit has been confirmed up to 10 Gb/s as a MOBILE with the complementary Outputs. Moreover, the operation of a non-return-to-zero (NRZ) D-flip flop circuit, integrated with a set/reset latch (SR latch) using the CML-type complementary MOBILE IC has been for the first time confirmed up to 8 Gb/s with a low power Consumption of 86 mW.