This device operates at high AC voltages. Ensure all connections are properly insulated and that the device is mounted in a non-conductive enclosure before use.
: It was the 98th iteration—hence the "98" in the name—where the thermal stability finally held. my 9892 datasheet
If you drive the LED with 5mA, the output transistor will sink 2.5mA to 10mA (50-200% of 5mA). Design your pull-up resistor accordingly. This device operates at high AC voltages