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SN65HVD62: please help to review the SN65HVD62 schematics

Andrew Su
Intellectual 1465 points
Part Number: SN65HVD62

Tool/software:

dears, 

it is my customer first time to use SN65HVD62, would you please help to double check their schematics?

thanks a lot!

  • +1
    TI__Guru 63000 points

    Hi Andrew,

    From what I can see, everything looks okay to me.... 

    • Vcc/VL look good (local decoupling)
    • Schematic pinout matches datasheet pinout 
    • Input pins look biased
    • TXOUT is connected to the 50 ohm termination resistor with a 220nF AC coupling capacitor
    • Rbias is set up using datasheet suggested values

    One minor check for the customer:

    Can you verify if the customer has a 1k pull up resistor on the Syncout pin? I only see it goes to another net. This pin is an open drain output so an external pull up resistor is required on this pin. Datasheet recommends 1k to ensure output levels. 

    -Bobby

  • +1 in reply to BOBBY
    TI__Intellectual 1465 points

    dear Bobby,

    thanks a lot!