The Camarillo, California-based Gallium Arsenide pioneer Vitesse Semiconductor Corp has won an accolade from AT&T Co’s Bell Laboratories, which contracted the company to develop a chip pair to be used in high-speed AT&T transmission systems. The chips are a pair of digital 16-channel multiplexer demultiplexer circuits designed to operate at multi-GHz rates and are implemented using a combination of very-high-speed source-coupled Field Effect Transistor logic and low-power direct-coupled FET logic, combining very high frequency operation with relatively low power consumption – under 1.5 Watts. They interface with slower CMOS parts in a design that partitions the high-speed logic to GaAs.
