28 Gbit/s selector IC using AlGaAs/GaAs HBTs

An ultra-high-speed selector IC has been developed for future optical transmission systems. The IC was fabricated with AlGaAs/GaAs HBT technology, for which the f/sub T/ is about 70 GHz. It operates at 28 Gbit/s with an output voltage swing of 1 V/sub p-p/. This is the fastest operating speed ever reported for a selector IC using any technology.