10 Mbps open-collector optocoupler for isolated digital links
The FOD260LSD from onsemi is a single-channel optoisolator rated for 10Mbps data rate with 5000Vrms isolation, making it a fit for isolating fast digital signals like encoder outputs, PLC digital inputs, or communication interfaces where you need to break ground loops without slowing the edge. The open-collector output with Schottky clamp lets you pull the output to any supply rail from 3V to 5.5V — useful when the receiving logic runs at a different voltage than the isolated side.
25 kV/µs CMTI and 90 ns propagation delay
That timing budget keeps the part usable for 10 Mbps NRZ data without pulse-width distortion eating into the bit period.
The input side is a DC-coupled LED with typical forward voltage 1.4V and max forward current 50 mA. The output side can sink up to 50 mA per channel — enough to drive a downstream optocoupler or a small relay coil directly.