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SN74LV164A Output terminal state when the power OFF

Other Parts Discussed in Thread: SN74LV164A

Hi
 
SN74LV164A Output terminal state when the power OFF.

This time, the power supply terminal of SN74LV164A during operation unnecessary
We believe that the drop in the Low in the external microcomputer.
Below, we 2 question's.

1. When the OFF the power supply terminal(Vcc) of the device, what will be output to the output terminal Qx?("H" or "L" or "Hi-z" or other)

2. When you OPEN the power supply terminal(Vcc) of the device, what will be output to the output terminal Qx?("H" or "L" or "Hi-z" or other)

Best regards

  • Hi Cafain ,

    The output Q would be in floating when power supply is off .
    This device also features Ioff circuitry which protects the subsequent system and useful in hot insertion . So , with power off , you can apply input and output voltages which wont damage the device or accidently turn on the system .