This part is a kind of semiconductor called TL1838.
Function of this product has Infrared Receiver.
Manufacturers : Open Impulse
Image and pinout :
Some of the text within the PDF file :
Free Datasheet http://www.Datasheet4U.com http://www.openimpulse.com TL1838 Infrared Receiver Datasheet 1. Features * Compact design; * Builtin dedicated IC; * wideangle and long distance reception; * antistem worries ability; * can more than offset the impact of ambient light; * Low voltage operation; 2. Dimensions and Pin Assignment Free Datasheet http://www.Datasheet4U.com http://www.openimpulse.com 3. Application Circuit 4. Schematic Diagram Free Datasheet http://www.Datasheet4U.com http://www.openimpulse.com 5. Optical Parameters (T = 25 ℃ Vcc = 5v f0 = 38KHZ) Parameter Operating Voltage Receiving distance Carrier Frequency Acceptance angle BMP width Quiescent Curren [ ... ]