SN65DPHY440SS: SN65PHY440SS DAxP/N input signal range

Hollis Liu

Part Number: SN65DPHY440SS

Hi team,

i would like to check what's the highest input voltage that DAxP/N pin can tolerate.

In my customer system, a 1.8V signal will be applied on DAxP pin before their system completes initialization(it needs about 10s). Will that damage the IC?

over 4 years ago

0 David (ASIC) Liu over 4 years ago

TI__Guru**** 179836 points

Hi,

Please refer to the max absolute ratings, max DPHY lane I/O differential voltage is 1.4V.

Thanks

David

0 Hollis Liu over 4 years ago in reply to David (ASIC) Liu

TI__Intellectual 2595 points

HI David,

1.4V is differential voltage of DAxP - DAxN? Or does it mean 1.4V is the max abs voltage of DAxP pins?

0 David (ASIC) Liu over 4 years ago in reply to Hollis Liu

TI__Guru**** 179836 points

Hi,

1.4V is differential voltage of DAxP - DAxN.

Thanks

David

0 Hollis Liu over 4 years ago in reply to David (ASIC) Liu

TI__Intellectual 2595 points

HI David,

ok. i want to clarify my question,

what's the max abs voltage of DAxP pins?

what's the max recommended voltage of DAxP pins?

Because in customer system, there will be a 1.8V DC voltage which is applied on DAx PINs when their system is working. That is not MIPI DPHY LP signal. And we don't want that 1.8V DC voltage damage the device.

0 David (ASIC) Liu over 4 years ago in reply to Hollis Liu

TI__Guru**** 179836 points

Hi,

No, you can't apply 1.8V to DAxP pins. Abs max is 1.4V.

Thanks

David

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SN65DPHY440SS: SN65PHY440SS DAxP/N input signal range