HCPL2731S Datasheet

High Speed Optocouplers


The 6N138/9 and HCPL2730/ HCPL2731S optocouplers consist of an AlGaAs LED optically coupled to a high gain split darlington photodetector.The split darlington conguration separating the input photodiode and the rst stage gain from the output transistor permits lower output saturation voltage and higher speed operation than possible with conventional darlington phototransistor optocoupler. In the dual channel devices, HCPL2730/HCPL2731S, an integrated emitter-base resistor provides superior stability over temperature.The combination of a very low input current of 0.5mA and a high current transfer ratio of 2000% makes this family particularly useful for input interface to MOS, CMOS, LSTTL and EIA RS232C, while output compatibility is ensured to CMOS as well as high fan-out TTL requirements. An internal noise shield provides exceptional common mode rejection of 10 kV/µs. HCPL2731S Features • Low current – 0.5mA• Superior CTR-2000%• Superior CMR-10kV/µs • CTR guaranteed 0–70°C• U.L. recognized (File # E90700)• VDE recognized (File # 120915) Ordering option V, e.g., 6N138V• Dual Channel – HCPL2730, HCPL2731 HCPL2731S Applications • Digital logic ground isolation • Telephone ring detector• EIA-RS-232C line receiver• High common mode noise line receiver• µP bus isolation• Current loop receiver


[{"Name":"Current Transfer Ratio: ","Value":"2500 % "},{"Name":"Data Rate: ","Value":"100 kBd "},{"Name":"Maximum Forward Diode Voltage: ","Value":"1.7 V "},{"Name":"Maximum Reverse Diode Voltage: ","Value":"5 V "},{"Name":"Maximum Power Dissipation: ","Value":"100 mW "},{"Name":"Maximum Operating Temperature: ","Value":"+ 85 C "},{"Name":"Minimum Operating Temperature: ","Value":"- 40 C "},{"Name":"Fall Time: ","Value":"35 us "},{"Name":"Forward Current: ","Value":"20 mA "},{"Name":"Isolation Voltage: ","Value":"2500 Vrms "}]

Manufacturer information


Diodes Incorporated is a leading global manufacturer and supplier of high-quality, application-specific, standard products within the broad discrete, logic and analog semiconductor markets. Diodes Incorporated primarily serves the computing, consumer, communications, industrial and automotive segments. Diodes’ diverse product portfolio includes parts for LCD/LED TVs and displays, desktop, notebook and tablet computing, smartphones and hand-held devices, set-top boxes, power supplies and USB protection as well as many other application areas.

Diodes Incorporated offers a wide array of products including diodes, rectifiers, transistors, MOSFETs, gate drivers, protection devices, function-specific arrays, amplifiers and comparators, Hall-effect sensors and temperature sensors, power management devices including LED drivers, AC-DC converters and controllers, DC-DC switching regulators, linear voltage regulators, current monitors, and voltage reference and shunt regulators, along with special function devices including USB power switches, load switch devices, voltage supervisors and motor controllers.

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