The ACPL-x6xL is an optically coupled optocoupler that combines an AlGaAs light emitting diode and an integrated high gain photo detector addresses the low power need. The optocoupler consumes extremely low power, at maximum 1.3mA IDD2 per channel across temperature. The forward current is as low as 1.6mA and thus allows direct current drive by most microprocessors. These optocouplers support both 3.3V and 5V supply voltages with guaranteed AC and DC operational parameters from “40°C to +105°C. The output of the detector IC is a CMOS output. The internal Faraday shield provides a guaranteed common mode transient immunity specification of 20 kV/µs. The CMOS output are slew-rate controlled and is designed to allow the rise time and fall time to be controlled over a wide range of the load capacitance. This design provides maximum AC and DC circuit isolation while achieving TTL/CMOS compatibility. These optocouplers are suitable for high speed logic interfacing, while consuming extremely low power.