The SI8422AB-D-IS is a dual, digital isolator made by Silicon Labs. It is an isolated, bidirectional I/O interface device with an integrated voltage regulator. It provides an isolation barrier of up to 2500 volts and is ideal for protecting sensitive connected devices from electrical noise and power surges. The digital isolator has a propagation delay of only 4.0 nanoseconds and a max data rate of 8Mbps. It also has an integrated, high-voltage current-limiting MOSFETs, making it safe to use in applications that require reliable isolation. Additionally, it is qualified to the industrial temperature range of -40°C to +85°C, so it can withstand extreme temperatures.