This part is a kind of semiconductor called SJ2323.

Function of this product has 6-Channel Audio Selector.

Manufacturers : SJ

Image and pinout :

Some of the text within the PDF file :

SAN JING ELECTRONICS CO.,LTD 6 Channel Audio Selector SJ2323 SJ2323 DESCRIPTION SJ2323 is a 6-Channel Audio Selector utilizing CMOS Technology specially designed for Home Theater System. It provides a built-in 2-Channel to 6-Channel Translator, which can directly mix traditional stereo channel to simulate a 6-Channel audio output. Single power supply (9V), I2C Bus Interface as well as very low Total Harmonic Distortion (THD < 0.005%) and other features are incorporated into a single chip thereby providing very high performance. Pin assignments and application circuit are optimized for easy PCB layout and cost saving advantages. Outline Drawing DIP-28 FEATURES z z z z Supply Voltage: 9V 4 Stereo Inputs One 6-Channel Input Maximum Input Voltage: 3.75Vrms (1kHz, THD<1%) Low Total Harmoni [ ... ]

SJ2323 PDF Datasheet Download