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USB Type-C Configuration Channel Logic and Port Control with VCONN

Availability: 15,684


Package | PIN: X2QFN (RWB) | 12
Temp: C (0 to 70)
Package qty | Carrier: 3,000 | LARGE T&R
Qty Price
1-99 $1.51
100-249 $1.32
250-999 $0.93
1,000+ $0.75


  • USB Type-C™ Specification 1.1
  • Backward Compatible with USB Type-C Specification 1.0
  • Supports Up to 3 A of Current Advertisement through dedicated Current Mode pin
  • Mode Configuration
    • Host Only – DFP (Source)
    • Device Only – UFP (Sink)
    • Dual Role Port –DRP
  • Channel Configuration (CC)
    • Attach of USB Port Detection
    • Cable Orientation Detection
    • RoleDetection
    • Type-C Current Mode advertisement and detection (Default, Medium,High)
  • VBUS Detection
  • VCONN Support for Active Cables
  • Cable Detection and Direction Control
    for External Switches
  • Supply Voltage: 4.5 V to 5.5 V
  • Low Current Consumption

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Texas Instruments  TUSB321RWBR

The TUSB321 device enables USB Type-C ports with the configuration channel (CC) logicneeded for Type-C ecosystems. The TUSB321 device uses the CC pins to determine port attach anddetach, cable orientation, role detection, and port control for Type-C current mode. The TUSB321device can be configured as a downstream facing port (DFP), upstream facing port (UFP) or a dualrole port (DRP) making it ideal for any application.

The TUSB321 device when configured as a DRP alternates configuration as a DFP or UFPaccording to the Type-C Specifications. The CC logic block monitors the CC1 and CC2 pins for pullupor pulldown resistances to determine when a USB port has been attached, the orientation of thecable, and the role detected. The CC logic detects the Type-C current mode as default, medium, orhigh depending on the role detected. VBUS detection is implemented todetermine a successful attach in UFP and DRP modes.

The device operates over a wide supply range and has low-power consumption.