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TCA9803: Finding Solution

Allan Fan
Expert 7500 points

Part Number: TCA9803
Other Parts Discussed in Thread: TCA9509, LSF0002

Hi experts,

May I learn from you do we have I2C buffer support 1.8V(A) <> 1.8V(B) and with package size including pins < 1.5x1.5? 

 

BR,

Allan

  • 0
    TI__Guru 55808 points

    Hi Allan,

    We can meet the 1.8V to 1.8V requirement with TCA9803 but not the package sizing. 

    TCA9509 comes close at 1.60mm x 1.60mm, but it cannot be used at VCCA = VCCB = 1.8V. 

    Does the customer need true I2C buffering, or can they utilize a level shifter like LSF0002? This device has a package size of 1mm x 0.8mm. It can level shift, but it does not buffer/re-drive I2C signals. 

    Regards,

    Tyler