This part is a kind of semiconductor called IC555.

Function of this product has LMC555 / Timer IC.

Manufacturers : ETC

Image and pinout :

Some of the text within the PDF file :

A 555 Timer IC Tutorial Página 1 de 21 © by Tony van Roon The 555 timer IC was first introduced arround 1971 by the Signetics Corporation as the SE555/NE555 and was called "The IC Time Machine" and was also the very first and only commercial timer ic available. It provided circuit designers and hobby tinkerers with a relatively cheap, stable, and user-friendly integrated circuit for both monostable and astable applications. Since this device was first made commercially available, a myrad of novel and unique circuits have been developed and presented in several trade, professional, and hobby publications. The past ten years some manufacturers stopped making these timers because of competition or other reasons. Yet other companies, like NTE (a subdivision of Philips) picked up where som [ ... ]

IC555 PDF Datasheet Download