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SN74ALVC164245: VCCB

umamaheswar peta
Expert 1370 points
Part Number: SN74ALVC164245
Other Parts Discussed in Thread: SN74LVC16T245

Hi,

In SN74ALVC164245 Is 7th pin related to VCCB of first set?

And Is 18th pin related to VCCB of second set?

 

I have got one doubt.

 

Can I give 5V to 7th pin (first set) and 3.3V to 18th pin (second set)?

Best Regards,

Umamahesh

  • 0
    TI__Guru 62270 points
    Hi Umamahesh,

    No. The device has multiple Vccb/ Vcca and gnd pins.
    As per your query here, both 7th and 18th pins must be connected to a single source (either 3.3V or 5V) and similiarly Vcca must be connected to a single source.
    Is there a particular reason you are using the SN74ALVC164245? You could also consider using the SN74LVC16T245 instead of SN74ALVC164245 which have fully configurable dual supply rails.