IsoPower digital isolator with on-chip isolated DC-DC
It uses magnetic coupling technology and supports unidirectional data transfer at up to 100Mbps across a 2500Vrms isolation barrier.
The headline 100Mbps data rate gives enough headroom for SPI clock lines up to 50 MHz, parallel GPIO isolation at moderate speed, or CAN/RS-485 transceiver isolation without bottlenecking the protocol. Propagation delay is 24 ns max each way, with pulse-width distortion held to 2 ns max — tight enough to pass 50 MHz square waves without duty-cycle skew that would upset a synchronous interface. The 2500Vrms isolation rating is the basic safety barrier for reinforced insulation in many medical and industrial designs. The 25 kV/µs common-mode transient immunity is the spec that actually matters when this isolator sits across a switching power supply — it means the output won't glitch when the primary-side ground bounces at several kilovolts per microsecond. If your application involves a motor drive or a flyback converter, that CMTI figure is the one that keeps the data intact. The integrated isolated power is the feature that saves a separate DC-DC module and a transformer winding on the BOM. The IsoPower section generates a regulated output on the secondary side from the primary supply, so a sensor interface or a transceiver on the isolated side gets its rail without an extra converter. That consolidation shrinks board area and reduces the component count, but it also means the total output current available from the isolated supply is limited — check the IsoPower load curve in the datasheet if you are powering more than a single low-power IC on the secondary side.