View the TI Optical module block diagram, product recommendations, reference designs and start designing. An optocoupler (also called an opto-isolator or photocoupler) is a component that transfers an electrical signal between two isolated circuits using light. Inside the package, an infrared LED on the input side shines onto a phototransistor on the output side. Because the signal crosses as light —. This tutorial gives an introduction to the HY-M154 / 817 optocoupler module. Whether you are creating a 100-Gbps or 400-Gbps, small form-factor pluggable (SFP) module, SFP+ transceiver, XFP module, CFP, X2/XENPAK module. The PC817X series optocoupler IC is comprised of an IRED (Infrared Emitting Diode, or IR LED) and a phototransistor optically coupled to it.
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