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SN74AVC4T245PWR 3.3V and 2.8V as bidirectional

Mohammed Azlum
Intellectual 835 points
Other Parts Discussed in Thread: TXB0104, SN74AVC4T245

Dear Community, 

Is it possible to use this "SN74AVC4T245PWR" for level translating between 3.3V and 2.8V as bidirectional ? As per datasheet page number 16 (10 Power Supply Recommendations) states like below. 

The A port and B port are designed to track VCCA and VCCB respectively allowing for low-voltage bidirectional translation between any of the 1.2-V, 1.5-V, 1.8-V, 2.5-V and 3.3-V voltage nodes. 

 

Regards,

Azlum

  • 0
    TI__Expert 6335 points

    Azlum,

    Yes it supports bi-directional voltage translation, but it is not automatic. You must set the direction of translation (From-A-to-B, or From-B-to-A) by configuring the DIR pins. If you need the translation direction to be detected automatically, then the TXB0104 might be a better choice.

    Does your application require automatic direction translation?

    Best Regards,
    Nirav

  • 0 in reply to Nirav Patel
    Intellectual 835 points
    Dear Nirav,

    I dont use automatic application. One direction application only.

    In datasheet, it specifically tells about only " 1.2-V, 1.5-V, 1.8-V, 2.5-V and 3.3-V" translation. It doesn't states about 2.8V application.
    Then how can I use this SN74AVC4T245PWR for 2.8V level translation application ?

    Regards,
    Azlum
  • 0 in reply to Mohammed Azlum
    TI__Expert 6335 points
    Azlum,

    Listed values in the datasheet are only examples of the most common voltage nodes. You can operate the SN74AVC4T245 at any voltage node between 1.2V and 3.6V.

    Best Regards,
    Nirav