please I have a small project witch deals with the infrared encoder / decoder (8 pins) ,
my problem is that i dont have enough information how each of these work (its description and the role of each pin) . Also i didnt find a well determined and explained datasheet of them.
please i need your help as soon as possible cause it is urgent

more information about the project HERE

 

The 8 pin encoder/decoder are actually microcontrollers. Without knowing the part number of the mcu and the source codes inside, there's no way for you to understand how the pins and the circuit works.

My best bet is you just buy from the supplier who sells the kits and construct the circuit according to the instructions, if you need it so urgently. Or you can learn the theory of how the mcu controlled IR transmitter and receiver works here........

http://jap.hu/electronic/codec.html

Allen