Mechanisms of Initiation of Unstable Latchup Effects in CMOS ICs

The results of research on nonstationary latchup effects (LEs) under the influence of heavy charged particles and ionizing radiation pulses, which are spontaneously counteracted depending on the operating conditions, are presented. This behavior is caused by the effects of the rail span collapse inside the complementary metal-oxide-system (CMOS) of very large scale integrated (VLSI) circuits. The experimental studies are carried out on both the ion accelerator and the laser facilities.