MAX3221: About MAX3221 schematic

Part Number:MAX3221

Hi All,

I would like this max3221cpwr to communicate with a pic micro-controller via UART. 

I tested the UART without the chip max3221cpwr. the microcontroller is sending and receiving data, but when I add the max I cannot get data.

I am using realterm to display the data that I am sending from a micro-controller.

After this stage (max3221cpwr)  I am using another rs232 board which is translating my data back to UART then from there I am using a UART to usb board up to my PC.

I don't have a DB9 on my PC.