TPD2E2U06-Q1: When the recommended layout can not be done

Koji Hayashi92

Mastermind 6970 points

Part Number: TPD2E2U06-Q1
Other Parts Discussed in Thread: TPD1E05U06-Q1

Hi All,

My customer plans to evaluate this IC on prototype board for ESD protection of Ethernet.

But, it can not be mounted in recommended pattern for layout reasons.

Is there any effect on the characteristics when using two ICs in the following way ?

Connect differential signal A to IO1 of IC1 and differential signal B to IO1 of IC2.

Each IO2 are NC.

Best Regards,

Koji Hayashi

over 5 years ago

0 Cameron Phillips over 5 years ago

TI__Genius 12410 points

Hello,

Yes this will work if both are grounded correctly. However we do have a one channel device TPD1E05U06-Q1 that you could use for each channel.

0 Koji Hayashi92 over 5 years ago in reply to Cameron Phillips

Mastermind 6970 points

Hi Cameron-san

Thank you for response.

Sorry for replying late.

TPD1E05U06-Q1 can not be used because customers' specification requirement is ± 25kV.

When using two ICs (the method described last time), does the characteristic change when jumper-connected GND with one IC ?

Best Regards,

Koji Hayashi

0 Cameron Phillips over 5 years ago in reply to Koji Hayashi92

TI__Genius 12410 points

If you have a very low impedance jumper to ground that is ok. If you start to add more impedance you will see a difference in performance because your grounds are not at the same potential for each ESD device.

0 Koji Hayashi92 over 5 years ago in reply to Cameron Phillips

Mastermind 6970 points

Hi Cameron-san

Thank you for quick response.

I understand.

I will reply to the customer.

Best Regards,

Koji Hayashi

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TPD2E2U06-Q1: When the recommended layout can not be done