The dual channel 5 Mb/s SFH6731 and SFH6732 high speed optocoupler consists of a GaAlAs infrared emitting diode, optically coupled with an integrated photo detector. The detector incorporates a SchmittTrigger stage for improved noise immunity. A Faraday shield provides a common mode transient immunity of 1000 V/s at VCM = 50 V for SFH6731 and 500 V/s at VCM = 300 V for SFH6732.