TS3USB31: TS3USB31

Nelson De Lima Junior

Part Number: TS3USB31
Other Parts Discussed in Thread: TMUX136

I need to know if exist a Texas IC that like the component TS3USB31(high-speed USB 2.0 bus isolator with single enable) is able to isolate an USB3.0 BUS with single enable.

over 1 year ago

0 Brian Zhou over 1 year ago

TI__Guru*** 148155 points

Nelson:

We don't have similar component for USB 3 bus with single enable in our group. I will assign this ticket to MUX group to see if they have one.

Regards

Brian

0 Nir Gilgur over 1 year ago

TI__Mastermind 19755 points

Hello Nelson,

I can suggest the TMUX136: https://www.ti.com/lit/ds/symlink/tmux136.pdf?ts=1699466110336&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FTMUX136

Please note the TMUX136 is a 2:1 switch so you need to tie one of the pins to ground through a 50ohms resistor. This is because its a high frequency application and leaving floating pins will cause distortions in the signals.

Thanks,

Nir

0 Nelson De Lima Junior over 1 year ago

Prodigy 10 points

Dear Nir, first of all, thank you very much for the great support

About tying the 50R resistor to ground:

Do I only need to connect a USB 3.0 signal, such as SSTX+?

Does the other signals, I mean SSTX-, SSRX+, SSRX- can be kept floating?

0 Alex Vish over 1 year ago in reply to Nelson De Lima Junior

TI__Genius 10552 points

Hi Nelson,

Nir is out of office so I'll jump in here. For this application it's best to not leave any floating pins - TI recommends that any unused pins must be connected to ground through a 50-Ω resistor to prevent signal reflections back into the device.

Regards,

Alex

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TS3USB31: TS3USB31