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CD74HC4050: Is the effective input voltage range dependent on Vcc?

user4987316
Prodigy 40 points
Part Number: CD74HC4050

Hello.

I am looking for an IC that can down convert a 12V or 5V signal to 3.3V. Is CD74HC4050 possible?
I am worried whether problems will arise if VI becomes higher than VCC.
(Operating Conditions are written as Vi ... 0 V to 15 V.)
Is the effective input voltage range dependent on Vcc?

  • 0
    TI__Guru* 96591 points

    Hello, and welcome to the forums!

    The inputs to the CD74HC4050 are tolerant to up to 16 V signals, regardless of the supply selected.

    If the input voltage is dependent on Vcc, then you will see something like this in the datasheet:

    Input Voltage Range . . . . . . . . . . -0.5V to Vcc + 0.5V