SN74AVC8T245: power supply

Oliver Zhang

Part Number: SN74AVC8T245

Tool/software:

Hi team,

Customer would like to confirm if one of the supply power down and power on again, w/ the other supply power is on, what would happen to the device?

Brs

Oliver

2 months ago

0 Joshua Salinas 2 months ago

TI__Mastermind 23260 points

Hello Oliver,

Does power-down mean supply will be 0V? If so, the I/Os will become Hi-Z and prevent backflow current. Once supply is powered-up again, I/Os will no longer be in a Hi-Z state and the AVC8T will behave normally.

Regards,

Josh

0 Oliver Zhang 2 months ago in reply to Joshua Salinas

TI__Intellectual 2240 points

Hi Josh,

So when one is always powering on, and the other one power off and on again, is there any risk?

Brs

Oliver

0 Jack Guan 2 months ago in reply to Oliver Zhang

TI__Mastermind 40976 points

Hi Oliver,

The mode of operation of the device is provided by Josh above. The I/Os will become Hi-Z and prevent backflow current. Once supply is powered-up again, I/Os will no longer be in a Hi-Z state and the AVC8T will behave normally. I do not see a risk in the operation here.

Regards,

Jack

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SN74AVC8T245: power supply