This part is a kind of semiconductor called 4N26.
Function of this product has 6-Pin DIP Optoisolators Transistor Output.
Manufacturers : Motorola Inc
Image and pinout :

Some of the text within the PDF file :
MOTOROLA SEMICONDUCTOR TECHNICAL DATA Order this document by 4N25/D GlobalOptoisolator™ 6-Pin DIP Optoisolators Transistor Output The 4N25/A, 4N26, 4N27 and 4N28 devices consist of a gallium arsenide infrared emitting diode optically coupled to a monolithic silicon phototransistor detector. • Most Economical Optoisolator Choice for Medium Speed, Switching Applications • Meets or Exceeds All JEDEC Registered Specifications • To order devices that are tested and marked per VDE 0884 requirements, the suffix ”V” must be included at end of part number. VDE 0884 is a test option. Applications • General Purpose Switching Circuits • Interfacing and coupling systems of different potentials and impedances • I/O Interfacing • Solid State Relays MAXIMUM RATINGS (TA = 25°C unle [ ... ]
4N26 PDF Datasheet Download
