FAIRCHILD Single-Channel: 6N138 6N139 Dual-Channel: HCPL-2730 HCPL-2731 Low Input Current High Gain Split Darlington Optocouplers handbook(1)
Datasheet
6N138, 6N139 and HCPL-2730, HCPL-2731 are low input current, high gain split darlington optocouplers. This product has low current (0.5 mA), high CTR (2000%), high CMR (10 kV/µs) and high temperature stability (0-70°C).