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DS92LV0421 VDDIO=2.5V

cafain
Mastermind 6525 points
Other Parts Discussed in Thread: DS92LV0421

Hi

DS92LV0421

VDDIO has been recommended for use in 1.8V or 3.3V, but if it is used in 2.5V, Would you have any problem？

It is scheduled to be connected to the FPGA (2.5V-LVDS25).

Best regards

  • 0
    TI__Mastermind 29655 points
    Hi Cafain,

    The VDDIO of the DS92LV0421/22 is designed to accept either 1.8V or 3.3V by design. Therefore, you cannot avoid tying a 3.3V or 1.8V supply to the VDDIO supply pin.

    However, you may still be able to use the FPGA to send LVCMOS 2.5V logic to the I/O pins of the device if you can assure that your 2.5V LVCMOS logic can meet all the 3.3V LVCMOS DC specifications defined on p. 9 of the datasheet. Your I/O signal from FPGA to the DS92LV0421/22 must be a high voltage of at least 2 V to meet the VIH requirement and a low voltage of at most 0.8 V to meet the VIL requirement.

    Thanks,

    Michael