SN74HC21: SN74HC21PWR VCC 3.3V, what is the VIH and VIL value?

Yu Ru Chen

Part Number: SN74HC21

I have one question about SN74HC21PWR VIH/VIL.

If I VCC use 3.3V, what is the VIH and VIL value?

0 Clemens Ladisch over 2 years ago

Guru 316690 points

0 Yu Ru Chen over 2 years ago in reply to Clemens Ladisch

Hi Clemens,

The info showing Voh & Vol instead of Vih & Vil, do we have input data to show as well?

Thanks.

0 Clemens Ladisch over 2 years ago in reply to Yu Ru Chen

Guru 316690 points

HCS does not have V_IL/V_IH because of the Schmitt-trigger inputs. Use the second linked FAQ.

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