Digital optocoupler for isolated data lines
The onsemi HCPL2630V is a 2-channel digital optocoupler with open-collector outputs, rated for 10 Mbps data rate and 2500 Vrms isolation. Both input channels are on side 1; the output side has no inputs — the device is unidirectional, passing logic signals across the isolation barrier from left to right.
The 10 Mbps data rate supports common digital buses like SPI, RS-485, and CAN at moderate speeds — the 75 ns max propagation delay (tpLH/tpHL) adds to the bus timing budget, so the receiving logic must account for it. Common-mode transient immunity of 10 kV/µs (typical) means the optocoupler rejects fast voltage spikes between input and output grounds — important in motor-drive or inverter environments where switching noise couples into the signal path. The 1.4 V typical forward voltage and 30 mA max forward current set the LED drive requirements; a series resistor from a 5 V logic output will bias the LED within its safe range.
onsemi lists the HCPL2630V as Obsolete. The 8-DIP through-hole package is straightforward to hand-assemble or rework, so date-code mixing is less of a concern than with fine-pitch SMD parts.