HD3SS3212: TUSB321AI + HD3SS3212 for UFP application

Avinoam Danieli22

Part Number: HD3SS3212
Other Parts Discussed in Thread: TUSB321

Hello,

On HD3SS3212 data sheet page 14 table 2 there is a reference to Rbias, but in Figure 8 I can not find Rbias. Please explain.

In which applications AC coupling to HD3SS3212 required.

Thank you, Avinoam

over 7 years ago

0 Brian Zhou over 7 years ago

TI__Guru**** 161526 points

it's based on your application to use AC coupling. If common mode voltage is > 2v for your system, it's required to use AC coupling and biased the voltage with Rbias to meet you system. Rbias is optional that's why it's not show up on Figure 8.

Regards,
Brian

0 Avinoam Danieli22 over 7 years ago in reply to Brian Zhou

Prodigy 100 points

Hello,
Where should I connect Rbias, which TUSB321 pin.
Thank you, Avinoam

0 Brian Zhou over 7 years ago in reply to Avinoam Danieli22

TI__Guru**** 161526 points

Rbias is external pullup to VCC on signal pin

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HD3SS3212: TUSB321AI + HD3SS3212 for UFP application