HD3SS2521 DockPort controller & switch | TI.com


DockPort controller & switch

DockPort controller & switch - HD3SS2521


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 .


  • Ideal for DockPort Applications
    • Bi-Directional 2:1 Switch for USB 2.0 (HS/FS/LS) and HPD Signals
    • Bi-Directional 2:1 Switch for SuperSpeed USB and DisplayPort Signals
    • Integrated DockPort Controller Manages DockPort Detection,
      Signal Switching and Power Switching
  • Supports Host- and Dock-side Applications
  • 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)
  • ESD
    • HBM: 2000V
    • CDM: 500V


Compare all products in USB Type-C & power delivery Email Download to Excel
Part number Order Device type Function Alternate mode Data role External power path control Iq (Typ) (uA) Realtime VBUS monitoring Dead battery support USB speed (Mbps) Operating temperature range (C) Rating Configuration Package Group
HD3SS2521 Order now Passive switch     DockPort     No     DRP     No     4500     No     No     5000     0 to 70     Catalog     2:1     WQFN | 56