Products/ Hubs, Port Multipliers, Repeaters, Redrivers / Hubs / USB 3.1 Gen 1 (USB 3.0)

U3H721

7-port (4-port USB 3.0 & 3-port USB 2.0) USB HUB

Highlights
  • USB 3.0 Compliant Hub
  • Supports seven downstream ports (Straight USB A receptacle connector)
    • 4-port USB 3.0
    • 3-port USB 2.0
  • SCSI I 50pin Low Density Centronics Connector Form Factor
  • Provides Upstream USB 3.0 Cable Port (Standard B-type Receptacle) lock mechanism
Introduction

U3H721 hub is a 7-port, low-power, configurable Hub Controller fully compliant with the USB 3.0 Specification. The U3H721 supports 5 Gbps SuperSpeed (SS), 480 Mbps Hi-Speed (HS), 12 Mbps Full-Speed (FS) and 1.5 Mbps Low-Speed (LS) USB signalling for complete coverage of all defined USB operating speeds.

U3H721 supports the legacy USB speeds through its USB 2.0 hub controller. The new SuperSpeed hub controller operates in parallel with the USB 2.0 controller, so the 5 Gbps SuperSpeed data transfers are not affected by the slower USB 2.0 traffic.

U3H721 is configured for operation through internal default settings, where custom configurations are supported through an on-chip OTP ROM or an external SPI ROM.

U3H721 implements a dedicated Transaction Translator (TT) for each port.

Multiple Transaction Translator (MTT) provides individual TT control logics for each downstream port. This is a performance better choice for USB 2.0 Hub.

Technical Specifications
  • USB 3.0 Compliant Hub
    • USB 3.0 compliant 5 Gbps, 480 Mbps, 12 Mbps and 1.5 Mbps operation, USB pins are 5 V tolerant
      • Integrated termination and pull-up/pull-down resistors
    • Four downstream USB 3.0 ports (which also support USB 2.0)
  • USB 2.0 Hub
    • Three additional USB 2.0 ports for non-removable devices
  • Dedicated Transaction Translator (TT) for each port
    • Dedicated TTs help maintain consistent full-speed data throughput regardless of the number of active downstream connections.
  • Supports Over-current detection and Individual power control.
  • PHYBoost (USB 2.0)
    • Selectable drive strength for improved signal integrity
  • VariSense (USB 2.0)
    • Controls the receiver sensitivity enabling four programmable levels of USB signal receive sensitivity
  • Optimized for low-power operation and low thermal dissipation
  • Configuration via OTP ROM or SPI ROM
  • 8K RAM, 32K ROM<
  • One Time programmable (OTP) ROM: 8 kbit
    • Includes on-chip charge pump
  • DC power input: U3H721 is self-power device and needs DC 5V power.
    • Big IDE 4-pin DC power connector
  • Provides Upstream USB 3.0 Cable Port (Standard B-type Receptacle) lock mechanism

    • USB3 cable lock mechanism
Physical Dimensions
  • 25.4mm (H) x 91.5mm (W) x 70.16mm (D)
  • Form Factor
    • SCSI I 50pin Low Density Centronics Connector
    • Fit to most standard SCSI enclosure
Kit includes

Kit 1:

  • U3H721

Kit 2:

  • U3H721
  • CB-00541-01 ---USB 3.0 A Plug to USB 3.0 B Plug with Jackscrews (M2) Cable L=2M

Kit 3:

  • U3H721
  • CB-00537-01 ---USB 3.0 A Plug to USB 3.0 B Plug with Jackscrews (M2) on both End Cable L=2M
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