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TCA9800: schematic consult

Sophia Yao
Prodigy 701 points
Part Number: TCA9800

Hi team,

My customer want to use TCA9800 as a buffer between CPU and DIMM. And frequency of I2C is 100kHz. can you help review below schematic?

thanks and best regards,

Sophia

  • 0
    TI__Guru 53555 points

    Hi Sophia,

    This schematic looks good. I don't have any changes to recommend. See my notes below. 

    • Voltage range for both A and B side are respected.
    • Decoupling capacitors included at both supplies and valued appropriately. 
    • No pull-up resistors/other current sources available on B-side. Ensure that R1151 and R1152 are not populated. 
    • Pull-up resistor values are able to support desired data rate. 2k-ohm PU can support Standard-mode (100kHz) up to ~300pF bus capacitance. 

    Let me know if there are any questions or concerns regarding this feedback or the design. 

    Regards,
    Eric Schott