Key facts
- Brand
- Fairchild
- Model
- 6N138
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-06-12
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FAIRCHILD Single-Channel: 6N138 6N139 Dual-Channel: HCPL-2730 HCPL-2731 Low Input Current High Gain Split Darlington Optocouplers handbook(1)
This document describes the Fairchild Semiconductor Darlington Optocouplers, specifically the single-channel models 6N138 and 6N139, and the dual-channel models HCPL-2730 and HCPL-2731. These devices consist of an AlGaAs LED optically coupled to a high gain split darlington photodetector, designed for applications requiring digital logic ground isolation and high common mode noise rejection.
The optocouplers feature a very low input current of 0.5 mA and a high current transfer ratio of up to 2000%. The split darlington configuration allows for lower output saturation voltage and higher speed operation compared to conventional darlington phototransistor optocouplers. An internal noise shield provides exceptional common mode rejection of 10 kV/us.
Fairchild 6N138 specifications
| Low Input Current | 0.5 mA |
|---|---|
| Superior CTR | 2000% |
| Superior CMR | 10 kV/us |
| Operating Temperature | -40 to +85 °C |
| Storage Temperature | -55 to +125 °C |
| DC/Average Forward Input Current | 20 mA |
| Peak Forward Input Current | 40 mA |
| Average Output Current | 60 mA |
| Output Power Dissipation | 100 mw |
All Fairchild 6N138 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
- FAIRCHILD Single-Channel: 6N138 6N139 Dual-Channel: HCPL-2730 HCPL-2731 Low Input Current High Gain Split Darlington Optocouplers handbook(1) 16 p
- FAIRCHILD Single-Channel: 6N138 6N139 Dual-Channel: HCPL-2730 HCPL-2731 Low Input Current High Gain Split Darlington Optocouplers handbook 16 p
- FAIRCHILD 6N138 6N139 DATA SHEET 16 p
Questions answered in these manuals
What are the applications for these optocouplers?
They are useful for digital logic ground isolation, telephone ring detectors, EIA-RS-232C line receivers, high common mode noise line receivers, LP bus isolation, and current loop receivers.
What is the current transfer ratio (CTR)?
The CTR is guaranteed to be 2000%.
What is the minimum input current required for these optocouplers?
The devices require a very low input current of 0.5 mA.
Are these devices suitable for digital logic ground isolation?
Yes, they are listed as applications for digital logic ground isolation and telephone ring detectors.
What are the main applications for these optocouplers?
They are useful for digital logic ground isolation, telephone ring detectors, EIA-RS-232C line receivers, and LP bus isolation.
What is the guaranteed CTR range?
The current transfer ratio (CTR) is guaranteed between 0% and 70°C.