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Original question:

TXB0304: TXBN0304RSVR: using pull-ups and pull-downs

TXB0304: TXBN0304RSVR: using pull-ups and pull-downs

Shreenidhi Patil
Expert 3936 points
Part Number: TXB0304

Hello Team , please help me with below query 

We are using this level translator TXB0304 in our design.The application of this level translator is in between FPGA (HP I/O bank voltage-1.2/1.8V ) and QSPI NOR flash at fixed 1.8V. The FPGA side voltage is adjustable and  can be 1.2V and 1.8V

Could you please confirm whether we can use this level translator in above application?(Some time both side of the TXB0304 will be at 1.8V)

 

Also in datasheet its recommended to pull down the OE pin of  TXB0304.Is it really required? Can we pull up the OE pin all the time to VCCA side?

  • 0
    TI__Guru* 97046 points
    Hi Shreenidhi,
    The title mentions pull-ups and pull-downs -- are you using pull-up or pull-down resistors with the TXB translator?

    The TXB0304 can operate at the same voltage if necessary, so 1.8V to 1.8V is no problem.

    If you are using TXBN0304RSVR, then you will need to pull OE low to operate the device. The 'N' in the part number indicates an inverted OE pin. There is no requirement to hold the device disabled unless you want it to remain in high impedance during startup.