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CD74HC4053: CD74HC4053 output status when device is disable.

Part Number: CD74HC4053

Hi team

Could you help to check what is the output status of CD74HC4053 when the device is disabled(When EN is High), is it tri-state status?

 

  • Alex,

    The output status of passive FET switches like the CD74HC4053 will be high impedance when the FET is disabled.  You can see this Hi-Z spec stated in the datasheet by the off state leakage current.  Even with a signal Vis as high as Vcc no more than 1uA will pass through the switch. 

    Vcc= IRoff  

    5 V = (1uA) Roff

    5V/(1uA) = 5M ohm = Hi -Z = Roff

    Thank you,

    Adam

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