Figure 6: Inverter chain—sizing of the stages in an inverter chain. (a) Stage capacitance (chain of 6 inverters), for various delay increase rates (log scale). (b) Stage capacitance (chain of 16 inverters), for various delay increase rates (log scale). (c) Stage sizing factor (chain of 6 inverters): ratio of gate capacitance to minimum delay capacitance, needed to meet the given delay increase rates value. (d) Stage sizing factor (chain of 16 inverters): ratio of gate capacitance to minimum delay capacitance, needed to meet the given delay increase rates value. (e) Stage downsizing value: change in gate capacitance with respect to minimum delay sizes to meet the given delay increase rates value. (f) Stage electrical effort (h), for various delay increase rates. 
