Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Need help to find chip

Status
Not open for further replies.
M

mailus

Full Member level 4
Joined
Mar 6, 2012
Messages
234
Helped
7
Reputation
16
Reaction score
7
Trophy points
1,308
Location
-
Activity points
2,706
I found in a usb to rs232 cable. I lost it's connection.help me find this chip pin details.. The chip numbers are erased. It is a 16 pin ic.

- - - Updated - - -

the image for this converter......
 

What type of package (DIL, SOIC, TQFP etc)? Do you not have the PCB?

lol - cross post.

OK, check with a multimeter for connection between the RS232 shell (or the ground pin of the RS232) and the two outer USB pins. That will give you the ground pin. Usually, the opposite end USB pin will be +V, but see what if connects to on the board before just powering it in case it is unusual.

(Need to go out for an hour - back later)
 
Last edited:

ya, i found the supply pins but others??.it's smd type...
do you know the chip name....
 

I'm not familiar with such a chip in a 16-pin package. However, you can get most of the pin functions just by checking the connections on the PCB.

If the RS232 side uses CTS, RTS etc then these will go to the chip. For USB D+ and D- (probably the middle two holes) you can just try to connect them either way around; there should be no harm done if they are the wrong way. If it doesn't work, swap them over.

Do you know what driver the PC uses? That might give us a clue as to the chip part number.
 

No,i don't know about this driver. how to check the converter is working or not?
 

Wire up a USB lead (I cut one end off a spare USB lead when I need to wire one) and plug into a Windows PC. If you have the connections correct, you should get the USB detection messages. You might need to find the correct driver though, if Windows does not install it automatically.
 
  • Like
Reactions: mailus

    M

    mailus

    Points: 2
    Helpful Answer Positive Rating
Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top