This part is a kind of semiconductor called 7314.

Function of this product has AC POWER CONTROLLERS.

Manufacturers : LSI Computer Systems

Image and pinout :

Some of the text within the PDF file :

LSI/CSI UL ® LS7314-7315 (631) 271-0400 FAX (631) 271-0405 LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747 A3800 AC POWER CONTROLLERS FEATURES: • 10 I/Os to Select/Indicate up to ten Power Levels • Inputs activated by Touch or Pushbutton Switch • Output switches pure and precise AC Power to Load • Operates with 50Hz/60Hz line frequency • Rugged, latchup-free process technology • +10V to +14V operation (Vss-VDD) • LS7314, LS7315 (DIP; LS7314-S, LS7315-S (SOIC) - See Figure 1 APPLICATIONS: • Universal and shaded-pole motor speed control for modern appliance designs. Eliminates awkward mechanical switch assemblies and multi-tapped motor windings. (See Fig. 4C) • Multi-level light switches. (See Fig. 4D) DESCRIPTION: The LS7314 - LS7315 are MOS inte [ ... ]

7314 PDF Datasheet Download