text.skipToContent text.skipToNavigation


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


Package | PIN: X2QFN (RWB) | 12
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $1.91
10-24 $1.72
25-99 $1.60
100-249 $1.40
250-499 $1.32
500-749 $1.12
750-999 $0.94
1000+ $0.90


  • 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
  • Industrial Temperature Range of –40 to 85°C

All trademarks are the property of their respective owners.

Texas Instruments  TUSB321AIRWBR

The TUSB321AI device enables USB Type-C ports with the configuration channel (CC) logicneeded for Type-C ecosystems. The TUSB321AI device uses the CC pins to determine port attach anddetach, cable orientation, role detection, and port control for Type-C current mode. The TUSB321AIdevice 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 TUSB321AI 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. The TUSB321AIdevice is available in industrial and commercial temperature ranges.