This part is a kind of semiconductor called MC14053B.

Function of this product has Analog Multiplexers/Demultiplexers.

Manufacturers : ON Semiconductor

Image and pinout :

Some of the text within the PDF file :

MC14051B, MC14052B, MC14053B Analog Multiplexers/Demultiplexers The MC14051B, MC14052B, and MC14053B analog multiplexers are digitally−controlled analog switches. The MC14051B effectively implements an SP8T solid state switch, the MC14052B a DP4T, and the MC14053B a Triple SPDT. All three devices 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 • Triple Diode Protection on Control Inputs • Switch Function is Break Before Make • Supply Voltage Range = 3.0 Vdc to 18 Vdc • Analog Voltage Range (VDD − VEE) = 3.0 to 18 V Note: VEE must be ≤ VSS • Linearized Transfer Characteristics • Low−noise − 12 nV/√Cycle, f ≥ 1.0 kHz Typical • Pin−for−Pin Replacement for CD [ ... ]

MC14053B PDF Datasheet Download