Control

Logic

DP Lane 2

SuperSpeed USB TX

SuperSpeed USB RX

DP Lane 3

DP Config 1

DP Config 2

USB DP

USB DM

DockPort_C2_DM

DockPort_C1_DP

DockPort_L2_TX

DockPort_L3_RX

HD3SS2521

www.ti.com

SLAS941A – APRIL 2013 – REVISED MAY 2013

DockPort Controller

Check for Samples: HD3SS2521

1

FEATURES

•

Ideal for DockPort Applications

•

ESD

–

Bi-Directional 2:1 Switch for USB 2.0

–

HBM: 2000V

(HS/FS/LS) and HPD Signals

–

CDM: 500V

–

Bi-Directional 2:1 Switch for SuperSpeed

USB and DisplayPort Signals

APPLICATIONS

–

Integrated DockPort Controller Manages

•

Desktop PCs

DockPort Detection, Signal Switching and

•

Notebook PCs

Power Switching

•

Tablets

•

Supports Host-and Dock-side Applications

•

Docking Station

•

VCC Operating Range 3.3V ± 10%

•

SuperSpeed USB I/O Supports Common Mode

Voltage from 0V to 2.2V

•

USB 2.0 I/O Supports Signal Up to 3.6V

•

Wide –3dB Differential BW on High-bandwidth

Path of over 6 GHz

•

Excellent High-bandwidth Path Dynamic

Characteristics on (at 2.5GHz)

–

Crosstalk = –39dB

–

Isolation = –22dB

–

Insertion Loss = –1.2dB

–

Return Loss = 12 dB

–

Max Bit-Bit Skew = 8 ps

•

5mm x11mm, 56-Pin WQFN Package (RHU)

Figure 1. DockPort Functional Diagram

DESCRIPTION

The HD3SS2521 is an integrated DockPort switch solution. It provides independent 2:1 passive switching for the

SuperSpeed USB and Display Port signals as well as for the USB 2.0 (HS/FS/LS) and I2C necessary to support

DockPort applications. In addition, a firmware upgradable integrated DockPort controller is provided to manage

host and dock side DockPort detection, signal switch and power configuration.

The HD3SS2521 is offered in 56-pin WQFN package and is specified to operate from a single supply voltage of

3.3V over the temperature range of 0°C to 70°C .

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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCT PREVIEW information concerns products in the

Copyright © 2013, Texas Instruments Incorporated

formative or design phase of development. Characteristic data and

other specifications are design goals. Texas Instruments reserves

the right to change or discontinue these products without notice.