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Original question:

TXS0108E-Q1: In case of using pull down at output port

TXS0108E-Q1: TXS0108E-Q1

Pankaj Chaudhary1
Prodigy 40 points
Part Number: TXS0108E-Q1

Hi, 

We are using TXS0108E-Q1 for VCCA -1.8V to VCCB - 3.3V. Our question is that how can we make VCCA inputs LOW while startup because signals on VCCA side are pulled high which are affecting controller start up (As it is recommended Power Sequence to keep those inputs LOW while Power on MCU ).

So how can we keep VCCA inputs low.

  • 0
    TI__Mastermind 45145 points

    Hey Pankaj,

    This device has internal pull-ups so if its powering up while enabled then you will see the voltage on the I/O track the supply. The best way would be do hold the OE pin low while powering up to keep the I/O disabled and add very weak pull downs (100 kohm) on the I/O to keep them low.