.
A5219 - Supervisor IC indicates fan failure
MAX6684 - Fan-Failure Detector with Integrated Power Switch
TC670 - Tiny Predictive Fan Failure Detector
83C575 - 80C51 8-bit microcontroller family 8K/256 OTP/ROM/ROMless/ 4 comparator/ failure detect circuitry/ watchdog timer
83C576 - 80C51 8-bit microcontroller family 8K/256 OTP/ROM/ 6 channel 10-bit A/D/ 4 comparators/ failure detect circuitry/ watchdog timer
AMIS-70020 - Power Failure Elapsed Time Counter
