System/Host

controller

RX

TX

Device/

Endpoint

RX

TX

Device/

Endpoint

RX

Port B

Port B

Port C

Port C

TX

System/Host

controller

RX

Device/

Endpoint

RX

Device/

Endpoint

RX

Port B

Port B

Port C

Port C

0.1 F

µ

0.1 µF

0.1 µF

TX

TX

TX

11

HD3SS3212, HD3SS3212I

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SLASE74E – MAY 2015 – REVISED MAY 2016

Product Folder Links: HD3SS3212 HD3SS3212I

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Application Information (continued)

Figure 5. AC Coupling Capacitors on Host TX and Endpoint TX

In the case where the common mode voltage in the system is higher than 2 V, the coupling capacitors are placed

on both sides of the switch (shown in Figure 6). A biasing voltage of <2 V is required in this case.

Capacitor and resistor values depend upon application

Figure 6. AC Coupling Capacitors on Both Sides of Switch

The HD3SS3212 can be used with the USB Type C connector to support the connector’s flip ability. Figure 7

provides the generic location for the AC coupling capacitors for this application.