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SN74CBTLV3861-Q1: Ioff effective voltage range

Guru 20090 points
Part Number: SN74CBTLV3861-Q1

Hello,

Could you please let me know the input/output state under Vcc(min) 2.3V?
I understood that the Ioff is active when Vcc=0V.
I would like to know the Ioff condition between 0V to 2.3V of Vcc.

In the customer, the /OE input may be low from 0.8V to 0V.
Thus, actually if the Ioff is active from0.8V to 0V(input and output pins Hi-Z) , there is no problem.

Best Regards,
Ryuji 

  • Hi Ryuji,

    Your questions are over two different topics, lets address both of them:

    1) "I would like to know the Ioff condition between 0V to 2.3V of Vcc."

    There is an undefined region according to the datasheet spec for this voltage range. The Ioff value is specified at Vcc = 0V and tells us how much current will flow when a signal is present on the input.

    2) "In the customer, the /OE input may be low from 0.8V to 0V.
    Thus, actually if the Ioff is active from 0.8V to 0V(input and output pins Hi-Z) , there is no problem." 


    The /OE pin is a valid low voltage from 0.8V to 0V. This is defined by the VIL spec like you saw in the datasheet. However, this spec is just stating what voltage is a valid "low" input. With this part, when /OE is low, the switches are actually turned on. This VIL spec is not related to the Ioff spec since the VIL spec is dictating what voltage activates the switch circuitry.  The Ioff spec is relating the leakage current with the device turned off.