Fairchild Semiconductor has a full duplex, bi-directional, logic gate optocoupler with high noise immunity for applications industrial fieldbus communications, programmable logic control, and servo control.

The FOD8012 supports isolated communications of digital signals between systems without conducting ground loops or hazardous voltages.

Unlike competitive devices which provide less than 0.1mm optical isolation gap, the FOD8012 features a 0.4mm (minimum) optical isolation gap for proven, reliable isolation.

The device also features a fast switching speed, up to 15Mbit/s, and uses a proprietary Optoplanar packaging design to achieve high common mode rejection (CMR) of 20kV/µs minimum, allowing the device to operate in noisy industrial environments.

This high-speed logic gate optocoupler is highly integrated with two optically coupled channels arranged in a bi-directional configuration, and housed in a compact 8-pin small outline package.

Each optocoupler channel consists of a high-speed AIGaAs LED, driven by a CMOS buffer IC coupled to a CMOS detector IC.