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MAX3232: 关于MAX3232CDR 串口不通

RONG JIE ZHU
Prodigy 30 points
Part Number: MAX3232

Hello, during the testing phase, we found an issue with the MAX3232CDR we supply to the SMT factory. Some of the products from the same production batch are connected to the serial port, while others are not. After replacing the MAX3232CDR with another batch, the entire board will operate normally. May I ask what the reason is?

Thank you for your prompt and positive response.

Thank you in advance.

  • 0
    TI__Expert 8280 points

    Thank you for contacting TI China E2E forum and choosing our products as part of your solution.
    Regarding your query, we suggest you check the abnormally chip whether SMD assembly are OK.
    For example, product appearance, connectivity.
    Then measure and compare normal chip and unusual chip's performance, to determine where the anomaly occurs.

    If the problem is with the MAX3232 chip and you order it from TI or authorized distributors.

    you can request Failure analysis process, please read the following webpage.
    www.ti.com/.../failure-analysis.html

    Note:If you are not buying through a regular channel (TI or authorized distributors), please contact your supplier.