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.