FS8400 & FS8500 System Basis Chips NXP Semiconductors FS8400 and FS8500 System Basis Chips are automotive functionally safe multi-output Power Supply Integrated Circuits (PMICs), optimized for radar, vision, ADAS (Advanced Driver Assistance Systems), and infotainment applications. The FS8400 and FS8500 are designed in compliance with the ISO 26262 Automotive Safety Integrity Level (ASIL) standard for the functional safety of road vehicles. The FS8400 is ASIL level B capable, and the FS8500 is ASIL D capable. All device options are pin to pin and software compatible.