# Doubts about Max232 IC chip

I have a Max 202 Ic and Max 232 Ic

I currently want to make a USB to RS232 Serial Db9 converter

i have the db9 male port, a max 232 and max 202 , usb female port and bunch of other passive components .

Is it possible to make a USB to DB9 Rs232 converter ? if yes , how ( any schematics ) ?

PS : also what is an alternative IC circuit to make USB to RS232 db9 , if this is not possible , ( i have this for my college project )

image : this is the project flow , as u can see at starting I need to make a USB to rs232 male DB 9 converter and this thread is about that

• Check FTDI ICs e.g. FT232. May 30 at 3:58
• @RohatKılıç I have checked the FTDI IC , but its in SOC pin out , Any ICs in DIP config ? May 30 at 3:59
• Why do you need a MAX232 chip if all voltage levels are below 5V? I thought 232 chips are for shifting the voltage levels and inverting the polarity to match the 12-15V RS232 output of PC to 5V output of the micro controller. And what's with the SPI block in the diagram?
– AJN
May 30 at 4:07
• @AJN actually according to the flowchart of my project - the first section , i want to make a USB to RS232 DB9 male converter, i thought a max232 can help me do that , correct me if i am wrong , what should i use ( DIP IC ) to make the USB to RS232 DB 9 male converter? May 30 at 4:10
• I am not familiar with any DIP IC. But you can see if non DIP IC with breakout board is available. The ic will come pre soldered to a PCB which will have pins that are consistent with DIP. But then, if you use such a board, you will need to expand the scope of your project since the board will solve most of the conversion work for you.
– AJN
May 30 at 4:19