SPI Extender Over Rugged Differential Link Features: 2MHz SCK Over 10m, Operation Up to 1200m Three Extended Slave Selects Protected from Overvoltage Lines Fault to ±60V ±40kV HBM ESD on Link Pins IEC ESD ±6kV and EFT ±4kV on Link Pins Extended Common Mode Range: ±25V Extended Interrupt Separate Programmable SPI Modes 3V to 5.5V Supply Voltage 1.62V to 5.5V Logic Supply 4mm × 5mm 20-Lead QFN Package