This part is a kind of semiconductor called 4052.

Function of this product has DIFFERENTIAL 4-CHANNEL ANALOG MULTIPLEXERS/ DEMULTIPLEXER.

Manufacturers : Unisonic Technologies

Image and pinout :

Some of the text within the PDF file :

UNISONIC TECHNOLOGIES CO., LTD 4052 DIFFERENTIAL 4-CHANNEL ANALOG MULTIPLEXERS/ DEMULTIPLEXERS  DESCRIPTION The UTC 4052 is differential 4-channel analog multiplexers/ demultiplexers for application as digitally–controlled analog switches. The device has two binary control inputs and an inhibit input. It feature low ON impedance and very low OFF leakage current. Control of analog signals up to the complete supply voltage range can be achieved.  FEATURES * Wide Analog Voltage Range: VDD–VEE = 3V~18V. (Note: VEE must be≦VSS) * Break-Before-Make Switching Eliminates Channel Overlap. * Linearized Transfer Characteristics * Implement an DP4T Switch Effectively. * Pin to Pin Replacement for CD4052  ORDERING INFORMATION Ordering Number Lead Free Halogen Free 4052L-D16-T 405 [ ... ]

4052 PDF Datasheet Download