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DP83848K: TD± Absolute maximum rating

cafain

Mastermind 6765 points

Part Number: DP83848K

HI,let me questions.

Q1:
If power is not supplied to the DP83848K,
When a 10BASE (or 100BASE) signal is applied from the other PHY to the TD± terminal of DP83848K,
Does DP83848K get stressed?
(* When the power of the DP83848K is OFF, is there no problem even if a signal is applied to TD±?)

Q2:
What is the Absolute maximum rating of the TD± and RD± terminals?

best regards
cafain

over 6 years ago

0 Geet Modi over 6 years ago

TI__Mastermind 26320 points

Hi,

Q1: Yes, not issues.
Q2 : It's shall be within IEEE Transmitter spec limit.

Regards,
Geet

0 cafain over 6 years ago in reply to Geet Modi

Mastermind 6765 points

HI, Geet-san

Thank you for your answer.

Q3. Do you think that there is no problem when connected by a transformer?
* The bias of 3.3 V is also OFF

Q4. Is it no problem even if AC-coupling is made with a capacitor?
* The bias of 3.3 V is also OFF

best regards
cafain

0 Geet Modi over 6 years ago in reply to cafain

TI__Mastermind 26320 points

Hi Cafain-san,
Q3, Q4 : Your question is whether DP83848K get's stressed ?

Regards,
Geet

0 cafain over 6 years ago in reply to Geet Modi

Mastermind 6765 points

HI, Geet-san

Yes

Stressed, affecting device performance
I am worried about not giving.

best regards

cafain

0 Geet Modi over 6 years ago in reply to cafain

TI__Mastermind 26320 points

Hi Cafain-san,

When Device is OFF and input swing on line is within the IEEE spec, it shall not impact the performance of the device.

Regards,
Geet

0 cafain over 6 years ago in reply to Geet Modi

Mastermind 6765 points

HI, Geet-san

I understood with a kind answer to the question.
Thank you very much.

Regards,

cafain