1

What is $V_{IH}$ and $V_{IL}$ in datasheets? I found High-level input voltage and Low-level input voltage on the datasheet?

DiaperHands
  • 782
  • 1
  • 6
  • 21
ISURU THIWANKA
  • 41
  • 1

2 Answers2

1

You are correct. In the attached document shows minimum 2.0V and above is considered Logic High. Likewise maximum voltage of 0.8V and below is considered logic low.

enter image description here

Mahendra Gunawardena
  • 7,153
  • 5
  • 25
  • 65
1

They are the extremes of the voltage at the input which define the required 0 and 1 logic levels. On the data sheet Logic 1 must be at least 2.0v and logic 0 less than 0.8 to function properly.

David
  • 11
  • 1
  • 3
    It might be better to say "2.0 V is the minimum voltage guaranteed to be read as logic 1 and 0.8 is the maximum voltage guaranteed to be read as logic 0. In-between these levels is undefined." But you've got the right idea. Welcome to E.SE. – Transistor Jan 24 '21 at 18:22