PC825 2-Channel photocoupler by Sharp. Package: 8-PDIP ( 2 x PC815 in a block) Download Sharp PC825 .pdf datasheet: Status: NOS (New Old Stock) in RS components foil wrappers. RS legacy stock number : RS175-205 RoHS compliant: no *** Note chip top side markings are PC815, as these are made in a continuous strip then cut up into singles (PC815), dual (PC825), triples (PC835) and quads (PC845) *** still confused, then please see the above provided datasheet which groups them all under the same PC815 product title.