UCD3138064: What status of pin29 in UCD3138064 if Vdd = 0volt?

ken yao

Prodigy 160 points

Part Number: UCD3138064

Hi,

Can you confirm what status of pin29 in UCD3138064 if Vdd = 0volt?
Is it high impendence ? Any sink current ?

over 4 years ago

0 Yitzhak Bolurian over 4 years ago

TI__Mastermind 18370 points

Hi,

I am guessing that you are referring to the 64-pin version of the chip.

I this case, pin #29 will be pulled low and may sink current if the chip is not powered.

This is due to ESD protection diode becoming forward biased.

Please note that if you want to use a PMBus_Alert pin, the pin #27 is a better candidate and will stay high resistance even if the device is not powered.

Regards,

0 Yitzhak Bolurian over 4 years ago in reply to Yitzhak Bolurian

TI__Mastermind 18370 points

Hi,

If the above addressed your question please set the status of this post to resolved.

Regards,

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UCD3138064: What status of pin29 in UCD3138064 if Vdd = 0volt?