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PCA9306: Vref2 not 0.6V Greater than Vref1

Chris Truong
Prodigy 30 points
Part Number: PCA9306

Just out our curiosity how would the device function if Vref2 is not 0.6V greater than Vref1?  

Lets assume Vref2 is equal to Vref1.  I know the device is not intended to be a buffer.  Would the device not conduct since doesn't meet the Vref requirement?

  • 0
    TI__Guru 62920 points
    Hi Chris,

    The device would still conduct low logic levels, it just wouldn't start conducting "immediately" when the voltage on either side started to drop. Instead, the switch would start to turn on once the voltage at VREF1 dropped 0.6 V below VREF2. For very low-voltage applications this may have a noticeable impact on timing, but for other applications I would not expect much of an issue operating the device in this way.

    Max