The HCPL-4502/HCPL-2503, 6N135/6 and HCPL-2530/HCPL-2531 optocouplers consist of an AlGaAs LED optically coupled to ahigh speed photodetector transistor.A separate connection for the bias of the photodiode improves the speed by several orders of magnitude over conventionalphototransistor optocouplers by reducing the base-collector capacitance of the input transistor.An internal noise shield provides superior common mode rejection of 10kV/µs. An improved package allows superior insulationpermitting a 480 V working voltage compared to industry standard of 220 V.
