Conceptual

Digital IC Design Pseudo-NMOS Inverter Mirroring Property and Sizing in Jan 2024 Live Session

The session defines the Mirroring Property in Complementary Static Logic (CSL), where a Boolean function $F$ satisfies this property if its complement under input inversion ($\bar{F}$) maps minterms of $F(A, B)$ directly to minterms of $\bar{F}(\bar{A}, \bar{B})$. When satisfied, this theorem permits the synthesis of symmetric CMOS circuits by replicating a Pull-Down Network structure in the Pull-Up Network while complementing input literals. Additionally, Pseudo-NMOS theory establishes that sizing ratios ($W_N/W_P$) must be calculated based on worst-case voltage drop conditions at saturation to ensure valid logic levels despite inherent static leakage paths caused by active load devices.