LT2620 Digital Input Levels

Question

Hello, 
 I would like to supply the LTC2620 with a VCC= 3.3Volt. 
 What is the the "Digital Input High Voltage" value for VCC=3.3Volt? Is it 2.0 Volt or 2.4Volt? 
 It is not very clear from the datasheet (table on pg.4), because the two given conditions are overlapping. 
 
 Thanks. 
 Best Regards 
 D

ADIApproved · Accepted Answer

Not a typo, but it could be clearer. For VIH: 2.0V will be considered &lsquo;H&rsquo; if Vcc<=3.6V. If Vcc > 3.6V, you&rsquo;ll have to use a logic high of at least 2.4V. I think we were trying to show that 2.4V would be acceptable for any Vcc, but should have made the upper condition &lsquo;3.6V to 5.5V&rsquo; to avoid confusion. 
 
 VIL is similar: &ldquo;0.6V logic low is acceptable for any Vcc&rdquo;. Probably that 2 nd condition for VIL would be clearer as &lsquo;Vcc = 2.5V to 4.5V&rsquo; rather than 2.5V to 5.5V.

dimo19 · Answer

Thank you for your answer.

ADIApproved · Answer

If you have any other questions let me know.

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LT2620 Digital Input Levels

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