The TLV360x family features input stages capable of operating 200 mV below negative power supply (ground) and 200 mV beyond the positive supply voltage, allowing for zero cross detection and maximizing input dynamic range given a certain power supply. The input stages are protected from conditions where the voltage on either pin exceeds this level by internal ESD protection diodes to VCC and VEE. To avoid damaging the inputs when exceeding the recommended input voltage range, an external resistor should be used to limit the current.