U6808B Datasheet (ATMEL Corporation)

U6808B, Specia Fail-safe IC

The U6808B is designed to support the fail-safe function of a safety critical system (e.g., ABS).

It includes a relay driver, a watchdog controlled by an external R/C-network and a reset circuit initiated by an over and undervoltage condition of the 5-V supply providing a low-level reset signal.

Fig

U6808B Features

* Digital Self-supervising Watchdog with Hysteresis One 250-mA Output Driver for Relay Enable Output Open Collector 8 mA Over/Undervoltage Detection ENABLE and RELAY Outputs Protected Against Standard Transients and 40V Load Dump

* ESD Protecti