TMUXHS4412: Power-Down Leakage

cfranAND

Part Number: TMUXHS4412

Tool/software:

Hello,

Does TMUXHS4412 have partial-power down protection (Ioff) for the Differential I/O pins?
It is not mentioned in the datasheet, but the absolute maximum ratings imply that it may have partial-power down protection.

If it does have the protection, then what is the leakage current on the Differential I/O pins when VCC = 0V (Ioff)?

10 months ago

0 Ryan Kitto 10 months ago

TI__Mastermind 37380 points

Hello,

I'll reach out internally to see if I can get an answer on this one, and I will let you know what I hear.

Additionally, just to double check, this stat doesnt cover the same information you're looking for, correct?

Thanks,

Ryan

0 cfranAND 10 months ago in reply to Ryan Kitto

Prodigy 80 points

Thanks Ryan.
No that stat doesn't address the question because VCC is powered (VCC != 0V) at that time.

0 Ryan Kitto 10 months ago in reply to cfranAND

TI__Mastermind 37380 points

Hello,

After talking to systems, I don't believe these pins have any failsafe/partial power-down protection. Sorry about that.

Please let me know if you have any other questions.

Thanks,

Ryan

0 cfranAND 10 months ago in reply to Ryan Kitto

Prodigy 80 points

Ryan,

Do you know if the Differential I/O pins have clamp diodes to VCC?
The VHSABSMAX = –0.5Vmin 2.4Vmax spec suggests that there are no VCC clamp diodes; otherwise it would say -0.5Vmin to VCC+0.4.

If TMUXHS4412 is unpowered (VCC = 0) and a PCIe clock differential signal is driven into the device (PCIe clock has no AC coupling caps), then will the TMUXHS4412 be damaged?

0 Ryan Kitto 10 months ago in reply to cfranAND

TI__Mastermind 37380 points

Hello,

Let me check with design on this, this isn't something we have readily available. I will ask them and let you know what I find.

Thanks,

Ryan

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TMUXHS4412: Power-Down Leakage