Question about using variable reluctance sensor
The current on the input pins is rated +/- 40 mA. The data sheet shows 10K resistors in series with the input. So if the input is 100V the current into the chip would be 10 mA. Internal protection diodes clamp the input to VCC + diode drop. If input is really 100V I would attenuate it with resistor divider or external clamp to be safe.