12u/6u inverter DRC:
12u/6u inverter LVS:
48u/24u inverter schematic, layout, and symbol:
48u/24u inverter DRC:
48u/24u inverter LVS:
The inverters SPICE simulates with a 100 fF, 1 pF, 10 pF, and 100 pF capacitive load was setup with parameter sweep.
12u/6u inverter simulation result:
48u/24u inverter simulation result:
For the simulation result, the 48u/24u inverter has a faster response. This is due to having more inverter means to having a buffer that outputs strong highs and lows.