View cs1107.rev3 datasheet:

CS1107 Single Relay Driver IC Description Features This ASIC provides up to 350mA of lead. Fault is an active-low output. Fault Detection drive current for driving a relay. An on-chip zener provides protec- Open Circuit On-chip diagnostic features include tion from flyback pulses from the open and short circuit detection in Short Circuit relay. Internal pull-down circuitry the on state, duty cycle current limit is provided to ensure the output Overtemperature control, and thermal shutdown. pin turns off when the Control pin Faults are reported on the Fault On-Chip Flyback is floating. Protection Low Standby Current Absolute Maximum Ratings Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65°C to 150°C VCC,Fault , Control . .