SN74AUP1T34: SN74AUP1T34

Jack Silson

Part Number: SN74AUP1T34
Other Parts Discussed in Thread: SN74LVC1G17, SN74AUC1G17, SN74AUP1G17, SN74AUP1G34, SN74LV1T34, SN74LVC1G34,

Hi,

The related thread stated:

"For down-converting, you can use the SN74LV1T34, or any buffer with an overvoltage-tolerant input, e.g., SN74LVC1G34, SN74AUP1G34, SN74LVC1G17, SN74AUP1G17, SN74AUC1G17.

For up-converting, you can use the SN74LV1T34."

But the SN74AUP1T34 seems to be the rare device that has power supplies on both Pins 1 and 5 (for the TSSOP-5 DCK package).
Is it OK to put the aforementioned buffers on the same footprint - i.e to supply power to the Buffer NC Pin 1?

I would like to use the alternative devices but without re-spinning the PCB.

Cheers,
Jack

over 3 years ago

+1 Emrys Maier over 3 years ago

TI__Guru* 96877 points

Hi Jack,

Yes, you can do that without any problems.

In general for logic devices, if you are using a standard plastic package (DCK, DBV, etc.) the NC pin is not internally connected and you can route any supply or signal to / through it.

For the wafer chip-scale packages (YZV, YFP, etc.), the NC pins should either be connected to GND or left floating.

+1 Jack Silson over 3 years ago in reply to Emrys Maier

Prodigy 20 points

Great!
Thank you for such a quick response.

Logic

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SN74AUP1T34: SN74AUP1T34