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SN74LVC2G74-Q1: What is the Q when power on?

Zhiyao Liu
Prodigy 90 points
Part Number: SN74LVC2G74-Q1

Tool/software:

Hi, experts.

 I expect  the Q output  to be low When the device is powered on, So I use RC  delay circuit to make CLEAR pin low firstly ,.Can this design ensure that the power-on output is low? and how much delay should be selected?

  • +1
    Guru 267950 points

    The minimum supply voltage at which the device is guaranteed to work is 1.65 V. When this voltage has been reached, the /CLR input must be low for at least 6.2 ns.

    The delay depends on how fast your supply voltage is rising. When in doubt, check with an oscilloscope, and add a large safety factor.