Digital isolators have many properties, and shown on this slide are the most important ones. Isolation voltage is a voltage level that can be applied across the isolation barrier for a given period without allowing current to flow. Channel configuration indicates how many independent channels inside a digital isolator are in the forward direction (from primary side to secondary side) and how many channels are in the reverse orientation (from secondary side to primary side). Data rate indicates the maximum number of bits that can be transmitted per second. Note that a device can always operate at a lesser data rate without problems. CMTI, an abbreviation for common mode transient immunity, defines reliable operation at a very high rate of change of voltage applied to the isolation barrier. Default output is the predefined state of the output of a channel when the input side of an isolator is unpowered. Finally, some digital isolators now offer an integrated DC/DC converter. Digital isolators without integrated power supplies have lower prices than powered digital isolators. However, solutions based on a digital isolator with integrated power supplies require less board space due to having the same package as unpowered variants and no need for an external supply for the secondary side of the device.