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SN74CBTLV3125: VOH and VOL parameter

Part Number: SN74CBTLV3125

Hi sir,

     About the datasheet page 5.  When the test load open/2VCC/GND, what's the Voh and Vol value? the datahsheet don't provide the detail value for the VOH and VOL ,but it is really important . Would you please provide the Voh and Vol value?

     I want to use the 3.3V for VDD. And the control data/input /output data voltage level are all 3.3V rail. What's the SN74CBTLV3125 output data VOH and VOL value?

Thanks

  • User5288154,

    I found this posting when typing in Voh and Vol into the switches and multiplexers search bar.

    The output voltage of the switch will depend on your system driver and load minus the voltage drop across the on-state resistance of the switch.  This switch doesn't have any drive capability which is why there is not a voltage output spec.

    Thank you,

    Adam

     

  • Hi Adam,

        Thanks for your reply. We connect  the VDD to 3.3V, The Vin data also is 3.3V voltage level. What is the Rdson resister in this condition? I haven't get the the Rdson resister in the condition That VDD is the same as the input data voltage level .

    Thanks

  • User5288154,

    The Rdson between the A and B pin will be about 10 ohms if you place Vcc = 3 V, OE pin logic low, Va 2.4 V, and sink 15mA of current out the other side of the switch.  If the voltage on A pin is 3.3 V I would expect the on-state resistance to be slightly lower than 10 ohms.

    This is how the Ron spec is measured with those test conditions.

    Thank you,

    Adam