This part is a kind of semiconductor called SHD-4135-XXX.
Function of this product has High Speed CMOS Optocoupler.
Manufacturers : Sensitron
Image and pinout :

Some of the text within the PDF file :
SENSITRON SEMICONDUCTOR DATA SHEET 4135, REV. B PRELIMINARY TECHNICAL DATA SHD-4135-XXX High Data Rate Optocoupler Features: Hermetic / Ceramic packages 60ns propagation delay 40Mbd Typical Signal Rate Low Input Current (1.6mA to 1.8mA) CMOS Output -211 (DIP) Applications: High Speed Isolation Ground Loop Elimination Pulse Transformer Replacement A/D, D/A Conversion Switching Power Supplies -221 (DIP) -241 (DIP) Absolute Maximum Ratings PARAMETER Forward Current Input Peak Forward Current Reverse Voltage * SYMBOL IF IFM VR RATING 10 25 6 UNIT mA mA V Supply Voltage Output Output Voltage Current Total Power Dissipation Isolation Voltage ** VCEO VECO IC PC Viso Topr Tstg 0 to 7 -.5 to 10 25 200 5000 -55 to +125 -55 to +150 26 [ ... ]
SHD-4135-XXX PDF Datasheet Download
