The 6N137, EL2601 and EL2611 consist of an infrared emitter diode optically coupled to an integrated high-speed photodetector logic gate with a stroboscopic output. The photodetector logic gates are coupled with a stroboscopic output. They are housed in an 8-pin DIP package and are available in wide-lead spacing and SMD options. https://elecena.pl/product/26558394/el2611-optocoupler-5kv-10mbd-dip-8 2024-07-27 https://elecena.pl/product/26558394/el2611-optocoupler-5kv-10mbd-dip-8 2026-02-12