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THVD1550: Compare THVD1550 and SN65HVD3088EDR

Jimmy WANG
Genius 3425 points
Part Number: THVD1550
Other Parts Discussed in Thread: THVD1520, SN65HVD3088E

Hi team,

I have one question as I know SN65HVD3088 is an old part. I suggest THVD1550 to replace the competitor. SP485EEN.

Apart from ESD and speed, what are the differences between THVD1550 and SN65HVD? Because the price gap is huge

  • 0
    Guru 285080 points

    The cross-reference search suggests the 10 Mbps THVD1520. (The THVD1520 have same or better ESD protection for contact discharge and HBM.)

  • +1
    TI__Mastermind 47047 points

    Hi Jimmy,

    So beyond speed and ESD ratings there are a few other key distinguishing factors:

    1. THVD1550 can handle a higher temperature range: -40C to 125C instead of -40C to 85C that the SN65HVD3088E is spec'd as. 

    2. THVD1550 has higher fault protection ratings on the A/B pins - it is +/-18V whereas the SN65HVD3088E only is rated at -9V/14V.

    3. THVD1550 has a larger common mode rating - +/-15V whereas the SN65HVD3088E has standard -7V/12V

    4. SN65HVD3088E recently went through a redesign that helped lower its price a bit. 

    Essentially THVD1550 is more robust which explains the main discrepancy in pricing. Older device also recently through redesign due to fabrication site migration that allows a slightly cheaper device. 

    With all that being said though - if price is a major concern the SN65HVD3088E was just redesigned this year - we released the update this past summer. So if customer doesn't need the increased speed, increased temp range, or increased protection the SN65HVD3088E is still a very good part for many standard RS-485 applications (which if they are using SP485 they probably only really need a standard RS-485 device) 

    Please let me know if you have any other questions!

    Best,

    Parker Dodson