Features
 TTL Compatible
 Low Control Current Requirements (0.5mA)
 High Output Current (60mA)
 High CTR Performance (2000%)
 High Isolation Voltage (5000VRMS)
 Instantaneous Common Mode Rejection (10kV/S)
 RoHS / Pb-Free / REACH Compliant

Applications
 Digital Logic Ground Isolation
 Replace Slower Speed Optocouplers
 Low Input Current Line Receivers
 Ring Detector Circuitry
 Loop Current Receiver
 High Common Mode Noise Line Receiver

Description
The SDN139 consists of a highly efficient AlGaAs
Light Emitting Diode and an integrated high gain
photo detector to provide extremely high current
transfer ratio between input and output. Separate
pins for the photodiode and output stage result in TTL
compatible saturation voltage and high speed
operation. Where desired the VCC and VO terminals
may be tied together to achieve conventional photo
Darlington operation. A base access terminal allows
a gain bandwidth adjustment to be made.
The SDN139 comes standard in an 8 pin DIP package.