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About the ADuM4223 Logic High Input Threshold

Question asked by Brent-Chang on Jul 15, 2014
Latest reply on Jul 15, 2014 by Brent-Chang

Hi,

 

The datasheet of ADuM4223 shows that the VIH (Logic High Input Threshold) is 0.7 * VDDI; Yet, in my test, the ADuM4223 works fine when the PWM input high level is 3.3V with VDDI is 5V.

Will it have any issue when the VDDI is 5V and the VIA,VIB high input is 3.3V ??

 

Hear from you soon and thanks!

 

Brent Chang

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