This diode-transistor optocoupler uses an insulating layer between a LED and an integrated photodetector to provide electrical insulation between input and output. Separate connections for the photodiode bias and output-transistor collector increase the speed up to a hundred times that of a conventional phototransistor coupler by reducing the base-collector capacitance.
This single-channel optocoupler is available in an 8-pin DIP package.
It is similar to the HCPL-4502, HCPL-0452, and HCNW4502 optocouplers but has increased common mode transient immunity of 15 kV/ms minimum at VCM = 1500 V guaranteed.
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