Complying with ATEX and ICEex specs, the OPI1268S optoisolator provides 20 kV of isolation and delivers 2-Mb/s data transmission rates. The optoisolator is designed for high voltage isolation in applications requiring sealing against dust and liquids, as well as in electrical equipment in potentially explosive atmospheres. It consists of a high-efficiency GaAIAs LED with a peak wavelength of 850 nm, optically coupled to a photodiode, and a high-gain linear amplifier, in an open collector inverter configuration that delivers dc/ac voltage isolation between the input and output circuitry while providing TTL signal integrity. Typical propagation delay is ≤50 ns. OPTEK TECHNOLOGY INC., Carrollton, TX. (972) 323-2200.