• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 20 subscribers
  • Views 939 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

SN74HC08-Q1: SN74HC08 VIH & VIL Level at VCC = 5V

Wei-Hao Chen (TW-FAE)
Expert 3260 points
Part Number: SN74HC08-Q1
Other Parts Discussed in Thread: SN74HC08

Hi team,

Could you please check what are the VIH & VIL levels for SN74HC08 with VCC = +5V? The datasheet only specified VCC =3, 4.5 and 6V. 

Many  thanks.

Best Regards,

Wei-Hao Chen

  • 0
    TI__Guru* 97046 points

    Hello Wei-Hao,

    I want to mention first that VIH and VIL are not threshold values.  You might already know this, but I see many of our customers get confused by this, and I want to make sure it is mentioned first.  These are input noise margin limits.

    Note that the given datasheet values are exactly 0.3 VCC (for the VIL spec) and 0.7 VCC (for the VIH spec). At 5 V, these values are:

    VIH = 3.5 V

    VIL = 1.5 V