The BU8315S and BU8315F are LED drivers with a flashing function.
They can be connected in series to panel PCBs in equipment such as telephones, facsimile machines, and copying machines, and to microcomputers of main PCBs, and significantly reduce the amount of wiring required.

Features
1) LED interface (14-bit serial in/parallel out).
2) Built-in LED automatic flashing function.

Applications
    Sets with operation panels, such as telephones, facsimile machines, and copying machines