Above 8GHz Static T-Flip-Flop Operation using FT=22.9GHz GaAs MESFETs

摘要

A static SCFL Toggle Flip-Flop GaAs IC having maximum operating frequency of Fdiv=8.25GHz has been designed using a commercially available GaAs MESFET foundry service. The average Ft for the present wafer is Ft=22.9GHz giving a very high Fdiv/Ft-ratio of Fdiv/Ft=0.36. In addition output voltage transition times of Tt(20%-80%)=35ps are obtained by implementation of a novel output driver design.