6N138 Darlington Optocoupler
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6N138 Darlington Optocoupler
This high gain series optocoupler uses a Light Emitting Diode and an integrated high gain photodetector to provide extremely high current transfer ratio between input and output. Separate pins for the photodiode and output stage result in TTL compatible saturation voltages and high speed operation. Where desired the VCC and VO terminals may be tied together to achieve conventional photodarlington operation. A base access terminal allows a gain bandwidth adjustment to be made.
The 6N138 is designed for use mainly in TTL applications. Current transfer ratio (CTR) is 300% minimum over 0 to 70 degrees C for an LED current of 1.6 mA (1 TTL Unit load). A 300% minimum CTR enables operation with 1 TTL Load using a 2.2 k ohm pull-up resistor.
Selection for lower input current down to 250 mA is available upon request.
Features
- High Current Transfer Ratio - 2000% Typical
- Low Input Current Requirements - 0.5 mA
- TTL Compatible Output - 0.1 V VOL Typical
- Performance Guaranteed over Temperature 0 degrees C to 70 degrees C
- Base Access Allows Gain Bandwidth Adjustment
- High Output Current - 60 mA
- Safety Approval
CSA Approved
- Available in 8-Pin DIP or SOIC-8 Footprint or Widebody Package
- Options available are:
300 = Gull Wing Surface Mount Option
500 = Tape and Reel Packaging Option
XXXE = Lead Free Option
Applications
- Ground Isolate Most Logic Families - TTL/TTL, COMS/TTL, CMOS/CMOS, LSTTL/TTL, CMOS/LSTTL
- Low Input Current Line Receiver
- EIA RS-232C Line Receiver
- Telephone Ring Detector
- 117 V ac Line Voltage Status Indicator - Low Input Power Dissipation
- Low Power Systems - Ground Isolation
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