Product details


Function Type-C, USB3 USB speed (Mbps) 10000 Supply voltage (V) 3.3 Rating Catalog Operating temperature range (C) 0 to 70 open-in-new Find other USB hubs & controllers

Package | Pins | Size

WQFN (RHU) 56 55 mm² 11 x 5 open-in-new Find other USB hubs & controllers


  • Compliant to USB Type-C Specification 1.1
  • Mode Configuration
    • Host Only – DFP
  • Channel Configuration (CC)
    • Attach of USB Port Detection
    • Cable Orientation Detection
    • Type-C Current Mode (Default, Mid, High)
  • Supply Voltage 3.3 V ± 10%
  • 2:1 Mux Solution for USB 3.1 Signaling
  • Operates up to 10 Gbps with Wide –3 dB BW of 8
  • Excellent Dynamic Characteristics at 2.5 GHz
    • Crosstalk = –39 dB
    • Off Isolation = –22 dB
    • Insertion Loss = –1.2 dB
    • Input Return Loss = –12 dB
  • Low Active (2 mW) and Standby Power (50 µW)
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HD3SS2522 is a 2:1 USB mux with Configuration Channel (CC) logic with Downstream Facing Port (DFP) support. The HD3SS2522 presents itself as a DFP according to the USB Type-C Spec. The CC logic block monitors the CC1 and CC2 pins voltages to determine when a USB port has been attached. Once a USB port has been attached, the CC logic also determines the orientation of the cable and configures the USB SS mux accordingly.

The HD3SS2522 provides an VBUS_EN signal to control legacy power switch to provide 5 V to VBUS. The device also provides control signals needed to support 5 V VCONN sourcing for ecosystems implementing USB Type-C.

Excellent dynamic characteristics of the device allow high speed switching with minimum attenuation to the signal eye diagram and little added jitter. The device also has low current consumption in Standby mode.

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Technical documentation

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Type Title Date
* Datasheet HD3SS2522 USB Type-C SS MUX with DFP Controller datasheet (Rev. B) Aug. 25, 2015
Application notes Enabling USB Type-C downstream ports for USB3.1 and 3.2 Hubs Dec. 12, 2019
User guides HD3SS2522EVM User's Guide (Rev. A) Jun. 25, 2015

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Design tools & simulation

SPICE-based analog simulation program
TINA-TI TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
document-generic User guide

Reference designs

TI USB Type-C Dock Reference Design
TIDA-00630 The Type-C Dock Board is designed to help evaluate Type-C Dock implementations with video and charging support.  The Type-C Dock offers data and video port expansion and a charging capability for Type-C systems that support USB PD/Alternate mode protocol.  The dock comes with three (...)
document-generic Schematic
USB Type-A to USB TypeC SS (SuperSpeed) MUX with DFP Controller Reference Design
TIDA-00624 This addapter converts a USB standard host type-A port to Type-C DFP (downstream-facing port) with support for default, 1.5 A and 3.0A VBUS current levels. The TUSB2522 simplifies the design by integrating 2:1 USB 3.1 (up to 10 Gbps) mux with a DFP controller to monitor the Type-C configuration (...)
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WQFN (RHU) 56 View options

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