The EL2530 and EL2531 dual-channel devices each consist of an infrared emitting diode optically coupled to a high-speed photodetector transistor.
photodetector transistor. A separate connection for the bias voltage of the photodiode and the collector of the output transistor increase the
speed by several orders of magnitude compared to conventional phototransistor couplers by reducing the base-collector capacitance of the input transistor.
capacitance of the input transistor.
The components are housed in an 8-pin DIP package and are available with large lead spacing and as an SMD option.
