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MAX3243E: MAX3243E output waveoform out of shape

Raymond He
Expert 1990 points
Part Number: MAX3243E
Other Parts Discussed in Thread: TRS3253E

dear

  The high and low levels of the MAX3243E DOUT have become blurry, so it doesn't look that much like a square wave ，It goes from the square wave to the sine wave

baud rate 119200 is normal， but 921600 is out of shape，If the slope goes up, 0 over 1 boundary is not clear,  going to have errors,

any advise？ thanks  in advance

  

  • 0
    TI__Guru 62920 points

    Hi Raymond,

    This is because the driver implements slew rate limiting for EMI reduction.  Because of this, this device specifies operation up to 500 kbaud only.  Faster drivers are available that would not show this behavior.  For example, you could evaluate TRS3253E.

    Regards,
    Max