Radiation Hardened Domino Logic Based Schmitt Trigger Circuit With Improved Noise Immunity

This work presents enhanced hysteresis width for noise-immune radiation-hardened Schmitt trigger circuits. A dual-mode Domino-based Schmitt trigger (DST) circuit is employed for dual purposes owing to the inclusion of a control module that functions as both a domino logic and a Schmitt trigger circuit. For various ST circuits, key performance metrics including hysteresis width, power consumption, latency, process variation, and critical charge at sensitive nodes are determined. The findings demonstrate that, in comparison to other reference circuits, the DST has improved performance metrics. The proposed DST has 3.89×, 1.58×, and 1.03× lower dynamic power, leakage power, and propagation delay, respectively in comparison to conventional ST. The hysteresis width of DST is 1.32× higher than conventional ST which makes it more practical for a noisy environment. All the simulation work has been handled by the Cadence virtuoso tool using UMC 40nm technology.