PC847 (PC817-4) photocoupler by Sharp. Package: 16-DIP please note some confusion regarding these devices as all versions are factory marked as PC817 (not PC817-4, not PC847) but are refered to in all datasheets as PC847 when refering to the 4 channel version. Download Sharp PC847 datasheet: Status: NOS (New Old Stock) RoHS compliant: tbc