This part is a kind of semiconductor called IL358.

Function of this product has (IL350 - IL359) Linear Optocoupler for Optical DAA.

Manufacturers : Vishay Intertechnology

Image and pinout :

Some of the text within the PDF file :

VISHAY IL350 / 351 / 358 / 359 Vishay Semiconductors Linear Optocoupler for Optical DAA in Telecommunications, High Performance Features • 2.0 mm High SMT Package • High Sensitivity (K1) at Low Operating LED Current • Couples AC and DC Signals • Low Input-Output Capacitance • Isolation Voltage, 3000 VRMS • Low Distortion • Lead-free component • Component in accordance to RoHS 2002/95/EC and WEEE 2002/96/EC K 1 A 2 K 3 A 4 8 K 7 A 6 N.C 5 N.C i179028 e3 Pb Pb-free Applications Optical DAA for V.34 FAX/Modem PCMCIA Cards Digital Telephone Line Isolation The IL350/351/358/359 optocouplers can be used with the aid of operational amplifiers in closed loop conditions to achieve highly linear and electrically isolated AC and or DC signal amplifiers. Description The IL350/3 [ ... ]

IL358 PDF Datasheet Download