Support is limited to customers who have already adopted these products. The PS8802-1, -2 are optically coupled isolators containing a GaAlAs LED on the light emitting diode (input side)and a PIN photodiode and a high-speed amplifier transistor on the output side on one chip. The PS8802-1, -2 are designed specifically for high common mode transient immunity (CMR), the PS8802-2 is suitable for high density applications.