CNVST pin of LTC2389-16

Question

Hi, 
 I would like to ask a question about CNVST pin on LTC2389. 
 The datasheet says the pin CNVST's logic level is determined by VDD, not OVDD. But the demo schematic on page 37 shows the CNVST is drived by a 3.3V signal, means its logic level is determined by OVDD. Which one is correct, OVDD or VDD? 
 Thanks!

ADIApproved · Accepted Answer

Hi, 
 CNVST logic levels are determined by VDD. Page 3 of the data sheet shows that the CNVST logic levels are Vil=0.5V and Vih=1.5V with VDD=5V. Under these conditions driving CNVST with a 0-3.3V signal will work without any issues.)

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CNVST pin of LTC2389-16