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DAC7568: SPI under/overshoots

Sten Haar
Prodigy 10 points
Part Number: DAC7568

Hi Support,

We have observed under/overshoots at the SPI communication. These under/overshoots exceeds the absolute maximum rating (+-0.3V) noted in the datasheet. 

The signal integrity issue is seen at the SPI_SCK_TRANS & SPI_MOSI_TRANS, please see picture below

SPI_SCK_TRANS ^ ~712.5mV

SPI_MOSI_TRANS ^ ~662.5mV

The best way forward would be changing the layout by adding serie termination after the lever shifter (TXB0104RUTR), but we would like to know the risk for the board which are already produced. 

Kind regards,

Sten