Single-Channel: 6N138, 6N139 Dual-Channel: HCPL2730, HCPL2731 Low Input Current High Gain Split Darlington Optocouplers

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Single-Channel: 6N138, 6N139 Dual-Channel: HCPL2730, HCPL2731 Low Input Current High Gain Split Darlington Optocouplers

April 2007

Single-Channel: 6N138, 6N139 Dual-Channel: HCPL2730, HCPL2731 Low Input Current High Gain Split Darlington Optocouplers
Features
Low current 0.5mA Superior CTR-2000% Superior CMR-10kV/ s CTR guaranteed 0 70 C U.L. recognized (File E90700) VDE recognized (File 120915) Ordering option V,

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Description
The 6N138/9 and HCPL2730/HCPL2731 optocouplers consist of an AlGaAs LED optically coupled to a high gain split darlington photodetector. The split darlington configuration separating the input photodiode and the first 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/HCPL2731, 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/ s.

e.g., 6N138V
Dual Channel HCPL2730, HCPL2731

Applications
Digital logic ground isolation Telephone ring detector EIA-RS-232C line receiver High common mode noise line receiver P bus isolation Current loop receiver

Schematic

Package

N/C 1

8 VCC

1 V
F1

8 VCC

8 1

2 V
F

7 VB

2

7 V01

3

6 VO

V

3

6 V02

F2

8
5 GND

8 1 1

N/C 4

5 GND

4

6N138 / 6N139

HCPL2730 / HCPL2731

2005 Fairchild Semiconductor Corporation 6N138, 5N139, NCPL2730, HCPL2731 Rev. 1.0.3

www.fairchildsemi.com

HCPL-2731 Datasheet Fairchild Download PDF

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HCPL-2731 DATASHEET