TMUX4053: Difference between PTMUX4053PWR and TMUX4053PWR

Hao(SH) Zhang

Intellectual 865 points

Part Number: TMUX4053

Hi team,

Customer would like to ask:

What's the detailed difference between PTMUX4053PWR and TMUX4053PWR?

BRs

Hao

over 2 years ago

0 Clemens Ladisch over 2 years ago

Guru 317390 points

The P prefix indicates preproduction devices. They might differ from the released device, but such differences are not published. You would use them for testing while the real device is not yet available.

0 Hao(SH) Zhang over 2 years ago in reply to Clemens Ladisch

TI__Intellectual 865 points

Hi Ladisch

Customer would like to ask；

If TMUX4053PW uses ± 5V power supply, what happens if Vin exceeds Vsupply.
Is it the same as conventional chips that have reverse diode clamping and then the signal goes to the power supply through the clamping diode?

Or there will still be other phenomena.

BRs，

Hao

0 Clemens Ladisch over 2 years ago in reply to Hao(SH) Zhang

Guru 317390 points

The control pins (SELx, /EN) are overvoltage tolerant. The analog I/O pins (Sx, D) have clamping diodes and are not.

0 Kameron Hill over 2 years ago in reply to Hao(SH) Zhang

TI__Mastermind 24440 points

Hi Hao,

Is this feature important to avoid for your customer?

Please let me know

Thanks,

Kameron

0 Hao(SH) Zhang over 2 years ago in reply to Clemens Ladisch

TI__Intellectual 865 points

Hi Clemens,

The customer observed a pulse of approximately +10V on the Sx pin of the TMUX4053 that lasted for 3us (single occurrence).
They would like to know if this pulse will have any impact on the device. Currently, the chip is powered by ± 5V.

BRs,

Hao

0 Clemens Ladisch over 2 years ago in reply to Hao(SH) Zhang

Guru 317390 points

The diodes will clamp the voltage.

The absolute maximum ratings forbid a clamp current of more than 30 mA. So to limit the current, you would need a series resistor of at least (10 V − 5 V) / 30 mA ≈ 167 Ω.

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TMUX4053: Difference between PTMUX4053PWR and TMUX4053PWR