Non Stable Latchups in CMOS ICs un der Pulsed Laser Irradiation

This article concerns experimental and simulation results on nonstable latchups (SLs) in CMOS integrated circuits (ICs) under pulsed laser irradiation. Different transient responses in elements of the p-n-p-n structure and irregular ionization distribution on the IC surface are the main reasons for non-SLs. Radiation experimental test results are presented as well as a discussion of non-SL mechanisms.