11,6 Gbps 1 to 4 demultiplexer using double pulse doped Quantum Well GaAs/AlGaAs transistors.

An ultrahigh speed 4 bit demultiplexer circuit has been developed and fabricated using a recessed gate process for enhancement and depletion transistors with 0:3mym gate length. First results show a data rate of 11-6 Gbit/s and a power consumption of 165 mW at 0-85 V supply voltage, including four 50Omega buffers.