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Thread: USB to TTL signal

  1. #1
    Ev0LuT|0N Newbie
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    USB to TTL signal

    Hi, I'm currently doing a project using rs232 to communicate with computer, and the circuit contain a MAX232 IC which will convert my rs232 signal to TTL signal, but now I want to change the input from rs232 to USB cable, due to project's requirement are concern about cost, I prefer not to convert USB->rs232->TTL, and I also read some of the article said that it might affect the synchronous.
    Then i found that, there is an IC FT232 are able to convert USB->TTL
    But before I try it on my circuit, i need some advice, is it possible for this type of conversion?
    is there any precaution step for this?

    thank you.
    Last edited by Ev0LuT|0N; 10th July 2009 at 06:33 PM.


  2. #2
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    FT232R is fine, it's all in the datasheet.
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  3. #3
    eng1 Excellent eng1 Excellent eng1 Excellent eng1 Excellent eng1 Excellent
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    The FT232RL worked fine for me. Be aware that you'll have to solder an SSOP28 chip into your board or presumably on an SMD-to-DIP adapter.
    Also, you'll have to install some drivers on your PC in order to create a virtual COM port.
    Last edited by eng1; 10th July 2009 at 06:51 PM.

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