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ADUM4154 with 2.5V Vdd


From the ADUM4154 datasheet it looks like Vdd can range from -0.5V to 7V. I figure this is a general range, can this device work with Vdd=2.5V and 2.5V SPI signals? Want to check because all examples are with either 5V or 3.3V.


Changed ranges
[edited by: cdubs1495 at 11:19 PM (GMT -5) on 23 Nov 2020]
  • Hi, cdubs,

    -0.5 to 7V is from the absolute max ratings (Table15 in the ADuM4154 datasheet). Table 14 has the recommended operating conditions, which are 3.0V to 5.5V.  The ADuM4154 cannot be supplied with 2.5V. 

    If the design requires a 2.5V supply, the ADuM141E or perhaps ADuM161N for additional chip select signals would be considerations. ADuM241E or ADuM261N could be considerations for higher high voltage specs. All of them can operate from nominal 2.5V supplies.


  • Ah ok shoot, thanks for these alternatives! I'll go with the ADuM26xN series for the higher isolation rating & multiple slave options.

    Thanks for your help!

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