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SN74AVC2T45-Q1

Meng jeffrey
Expert 2760 points
Other Parts Discussed in Thread: SN74AVC2T45-Q1, SN74AXC8T245-Q1, SN74LVC1T45-Q1

Is SPI SN74AVC2T45-Q1 level conversion OK?

  • 0
    TI__Guru 56790 points
    Hi Meng,

    What are the voltage levels?
    You can also consider using the SN74AXC8T245-Q1 which will support SPI in a single device.
    The AVC2T45-Q1 can be used but would need 1 of this and 2 of SN74LVC1T45-Q1 to achieve this.
  • 0 in reply to ShreyasRao
    Expert 2760 points

    Consider the size of the level shifter,CAVC2T45TDCURQ1 is smaller,and 2 lines level shifter is more flexible for use.

    I still want use 3 CAVC2T45TDCURQ1  in the 6 lines SPI, 4 signal line  direction A to B and 2 signal lines B to A.(A=1.8V,B=3.3V).

    Please help confirm if I have make the right use of the CAVC2T45TDCURQ1 in the SPI  level shifter circuit?

  • 0 in reply to Meng jeffrey
    TI__Guru 56790 points
    Hi Meng,

    I see all the DIR pins are tied to VccA level? would the U46 DIR pin need to be low for the MISO signal?
    You could also consider using the SN74AVC4T245Q1 device and another SN74AVC2T45q1 device for the 6 channel device.