Design and InP HEMT Technology for ultra-high speed digital ICs with beyond 80-Gbit/s operation

There is great interest in increasing the operating speed of digital circuits. Using 0.10-/spl mu/m gate-length InP HEMT technology, to date we have developed a 144-Gbit/s multiplexer (MUX), a 80-Gbit/s demultiplexer (DEMUX), a 80-Gbit/s D-type flip-flop (D-FF), and a 90-GHz T-type flip-flop (T-FF). Key aspects of the fabrication, circuit design, and measurement are described in this paper.

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