This part is a kind of semiconductor called MAX4850.

Function of this product has (MAX4850 / MAX4852) Dual SPDT Analog Switches.

Manufacturers : Maxim Integrated Products

Image and pinout :

Some of the text within the PDF file :

19-3375; Rev 0; 7/04 Dual SPDT Analog Switches with Over-Rail Signal Handling General Description The MAX4850/MAX4850H/MAX4852/MAX4852H family of dual SPDT (single-pole/double-throw) switches operate from a single +2V to +5.5V supply and can handle signals greater than the supply rail. These switches feature low 3.5Ω or 3.5Ω/7Ω on-resistance with low oncapacitance, making them ideal for switching audio and data signals. The MAX4850/MAX4850H are configured with two SPDT switches and feature two comparators for headphone detection or mute/send key functions. The MAX4852 has two SPDT switches with no comparators for low 1µA supply current. For over-rail applications, these devices offer either the pass-through or high-impedance option. For the MAX4850/MAX4852, the [ ... ]

MAX4850 PDF Datasheet Download