TS3USB221: TS3USB221RSER selection pin discussion

TT_Chin

Expert 2025 points

Part Number: TS3USB221

Hi,

I have a design using TS3USB221RSER for signals switch.

I would like to know if I doesn't apply any logic level (0 or 3.3V ) to the selection pin (Pin 9) of TS3USB221RSER (it means pin 9 of TS3USB221RSER is floating),

what is the connection state of D+/D-? does it connect to 1D+/1D- or 2D+/2D- ?

Thanks!

Sincerely,

Chin

over 5 years ago

0 Malik Barton57 over 5 years ago

TI__Guru 64326 points

Hi Chin,

"S" pin does not have any internal pull-up or pull-down so it should be driven to select 1D or 2D. If "S" pin is floating switch state is unknown.

0 TT_Chin over 5 years ago in reply to Malik Barton57

Expert 2025 points

Hi Malik,

Okay, thanks for the answer.

Sincerely,

Chin

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TS3USB221: TS3USB221RSER selection pin discussion