The superfast (/spl sim/200 ps) switching observed lately in a GaAs bipolar-junction transistor (BJT) structure is analyzed. Contrary to all known bipolar semiconductor switches, a superfast transient ...

A pnp-only BiCMOS flow produces peak f/sub T//f/sub max/ values for pnp devices of 115 GHz/115 GHz. The high speed performance of the pnp transistors surpasses the best reported values of this ...