Modeling and Design of a Nano Scale CMOS Inverter for Symmetric Switching Characteristics

Table 7

Comparison between PSO results and SPICE results— 𝜏_𝑅 and 𝜏_𝐹.

Case study	PSO results			SPICE results
	𝜏𝑅(ns)	𝜏𝐹(ns)	Difference (ns)	𝜏𝑅(ns)	𝜏𝐹(ns)	Difference (ns)
1	5.1363	5.1546	0.0183	5.0674	5.2532	0.1858
2	10.5820	10.5131	0.0689	10.6200	9.8351	0.7849
3	5.1146	5.0244	0.09012	5.0535	5.3356	0.2821
4	5.2015	5.2138	0.0123	5.0398	5.4025	0.3627
5	8.8588	8.8279	0.0309	8.6485	8.5699	0.0786
6	5.4233	5.4471	0.0238	5.2171	5.6551	0.438
7	5.3678	5.3867	0.0189	5.2649	5.6741	0.4092