Low Propagation Delay Design of 3-Bit Ripple Counter on 0.12 Micron Technology
The evolution of Integrated Circuit (IC) fabrication techniques is a unique fact in the history of modern industry. The improvements in terms of low propagation delay, density and cost have kept constant for more than 30 years. The main improvements in terms of feature size reduction for MOS devices is increased number of metal interconnects to link MOS together within the chip. Consequently, the clock frequency of the chip has never stopped increasing, with an expected 800MHz.