TPD4S201: TPD4S201RUKR: Can unused SBU1/SBU2/C_SBU1/C_SBU2 pins be left floating?

Hori Shota

Part Number: TPD4S201

Hi team,

Purpose:
To confirm the recommended handling of unused SBU-related pins.

Background / Setup:
We are using TPD4S201RUKR in our design. In our application, the SBU-related lines are not used.

Question:
Can the following pins be left floating when they are unused?

Or is it required to connect them to GND or apply any other termination?

Best Regards,
Shota

+1 Katilynn Mar 2 months ago

Hello Shota,

Thank you for reaching out on E2E.

We recommend ting the C_SBU1 and C_SBU2 pins to GND in your design if unused.

Thank you,

Katilynn

0 Hori Shota 2 months ago in reply to Katilynn Mar

Expert 1430 points

Hi Katilynn-san,

thank you for reply.

I have a question regarding the pin configuration.

Purpose
To confirm the appropriate connection method for the pin.

Background / Setup

Question

Is it acceptable to directly short this pin to GND?
In this case, can we assume that an external pull-down resistor is not required?

Best Regards,
Shota

+1 Katilynn Mar 2 months ago in reply to Hori Shota

Hello Hori,

You can directly short to GND for the C_SBU1 and C_SBU2.

Thank you,

Katilynn

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