HD3SS2521
www.ti.com
SLAS941A –APRIL 2013–REVISED MAY 2013
DockPort Controller
Check for Samples: HD3SS2521
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FEATURES
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Ideal for DockPort Applications
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ESD
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Bi-Directional 2:1 Switch for USB 2.0
(HS/FS/LS) and HPD Signals
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HBM: 2000V
CDM: 500V
Bi-Directional 2:1 Switch for SuperSpeed
USB and DisplayPort Signals
APPLICATIONS
Integrated DockPort Controller Manages
DockPort Detection, Signal Switching and
Power Switching
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Desktop PCs
Notebook PCs
Tablets
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Supports Host-and Dock-side Applications
VCC Operating Range 3.3V ± 10%
Docking Station
SuperSpeed USB I/O Supports Common Mode
Voltage from 0V to 2.2V
DP Lane 2
SuperSpeed USB TX
DockPort_L2_TX
DockPort_L3_RX
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USB 2.0 I/O Supports Signal Up to 3.6V
DP Lane 3
Wide –3dB Differential BW on High-bandwidth
Path of over 6 GHz
SuperSpeed USB RX
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Excellent High-bandwidth Path Dynamic
Characteristics on (at 2.5GHz)
DP Config 1
DP Config 2
DockPort_C1_DP
DockPort_C2_DM
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Crosstalk = –39dB
USB DP
USB DM
Isolation = –22dB
Insertion Loss = –1.2dB
Return Loss = 12 dB
Max Bit-Bit Skew = 8 ps
Control
Logic
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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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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.