Texas Instruments

TUSB321RWBR - USB Type-C CC Logic & Port Control | TI

Name: TUSB321RWBR
Brand: Texas Instruments
Price: 0.65 USD
Availability: InStock

MPN: TUSB321RWBR ✓ Active

In Stock Ships in 1-3 business days

4.5 V to 5.5 V Vdss Up to 3 A Id 12-X2QFN (1.6x1.6 mm) Package

From $0.65 USD / Unit

MOQ: 1 |

Price updated: 2026-08-27

Volume Pricing

Qty	Unit Price	Extended
1	$1.25	$1.25
10	$1.12	$11.20
100	$0.89	$89.00
500	$0.76	$380.00
1,000	$0.65	$650.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for TUSB321RWBR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

TUSB321AIRWBR

✅ Drop-In

📦 12-X2QFN (1.6x1.6 mm)

Enhanced version with USB Type-C 1.3 support and improved dead battery mode

📋 Reference alternative (not in catalog)

TUSB322IRWBR

✅ Drop-In

📦 12-X2QFN (1.6x1.6 mm)

Supports USB Type-C 1.3, includes VCONN swap and Try.SRC/Try.SNK modes

📋 Reference alternative (not in catalog)

TUSB320LAIRWBR

✅ Drop-In

📦 12-X2QFN (1.6x1.6 mm)

Similar CC logic, supports USB Type-C 1.1, lower current advertisement (up to 1.5 A)

📋 Reference alternative (not in catalog)

TUSB321RWBR

✅ Drop-In

Texas Instruments

📦 12-X2QFN (1.6x1.6 mm)

USB Type-C Configuration Channel (CC) Logic and Port Control · 1.1 (backward compatible with 1.0) · Up to 3 A · DFP (Source), UFP (Sink), DRP · 4.5 V to 5.5 V · 12-X2QFN (1.6x1.6 mm) · Surface Mount · [DATA_NEEDED: operating temperature range]

✓ In Stock

$0.65 / Unit

View Datasheet →

TUSB321A

✅ Drop-In

📦 12-X2QFN (1.6x1.6 mm)

Base version without enhanced features, pin-compatible

📋 Reference alternative (not in catalog)

TUSB321RWBR Maximum Ratings & Electrical Characteristics

Function	USB Type-C Configuration Channel (CC) Logic and Port Control
USB Type-C Specification	1.1 (backward compatible with 1.0)
Current Advertisement	Up to 3 A
Mode Configuration	DFP (Source), UFP (Sink), DRP
Supply Voltage (VCC)	4.5 V to 5.5 V
Package	12-X2QFN (1.6x1.6 mm)
Mounting Type	Surface Mount
Operating Temperature Range	[DATA_NEEDED: operating temperature range]
Integrated VCONN Switch	Yes
Dead Battery Mode	Supported
CC1/CC2 Pins	Monitor for attach/detach, orientation, role
RoHS Status	Compliant
REACH Status	Compliant
MSL Level	[DATA_NEEDED: MSL level]
Number of Pins	12

TUSB321RWBR Pin Configuration

Pin 1	CC1 — Configuration channel 1
Pin 2	CC2 — Configuration channel 2
Pin 3	VCC — Power supply (4.5V to 5.5V)
Pin 4	GND — Ground
Pin 5	MODE — Mode configuration (DFP/UFP/DRP)
Pin 6	CURRENT_MODE — Current advertisement mode
Pin 7	VCONN — VCONN switch output
Pin 8	VBUS — VBUS sense
Pin 9	D+ — USB data plus
Pin 10	D- — USB data minus
Pin 11	ID — ID pin for role detection
Pin 12	EN — Enable pin

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

TUSB321RWBR is suitable for 6 applications: Smartphones, Tablets, Laptops, Docking Stations, USB Type-C Chargers, IoT Devices.

📱

Smartphones

The TUSB321RWBR provides USB Type-C CC logic for smartphones, enabling role detection and current advertisement up to 3 A. Its small X2QFN package fits space-constrained designs, and its low power consumption extends battery life. It supports DFP, UFP, and DRP modes, making it versatile for charging and data transfer.

Recommended

TUSB321AIRWBR (Enhanced alternative with USB Type-C 1.3 support) TUSB322IRWBR (Alternative with additional features)

📱

Tablets

In tablets, the TUSB321RWBR manages USB Type-C connectivity for charging and data. It supports up to 3 A current advertisement, enabling fast charging. The device's DRP capability allows the tablet to act as a host or device. Its compact package is ideal for thin tablet designs, and the integrated VCONN switch simplifies cable power management.

Recommended

TUSB321AIRWBR (Drop-in replacement with enhanced features) TUSB322IRWBR (Alternative with VCONN swap support)

💻

Laptops

The TUSB321RWBR is used in laptops to implement USB Type-C ports for charging, data, and video. It supports DRP mode, allowing the laptop to be a source or sink. The device's CC logic detects cable orientation and negotiates current up to 3 A. Its small footprint is beneficial for compact laptop designs, and it supports dead battery mode for charging when the system is off.

Recommended

TUSB321AIRWBR (Enhanced alternative for newer USB Type-C specs) TUSB322IRWBR (Alternative with Try.SRC/Try.SNK modes)

🔧

Docking Stations

In docking stations, the TUSB321RWBR provides CC logic to manage multiple USB Type-C ports. It supports DFP mode to act as a source, and its current advertisement up to 3 A ensures adequate power delivery. The device's small package allows for dense port layouts. Its integrated VCONN switch simplifies cable power management in multi-port designs.

Recommended

TUSB321AIRWBR (Drop-in replacement with enhanced features) TUSB322IRWBR (Alternative with additional modes)

⚡

USB Type-C Chargers

The TUSB321RWBR is used in USB Type-C chargers to implement CC logic for current advertisement up to 3 A. It supports DFP mode to act as a source. The device's small package is ideal for compact charger designs. Its low power consumption and dead battery mode ensure reliable operation even when the charger is unpowered.

Recommended

TUSB321AIRWBR (Enhanced alternative with USB Type-C 1.3) TUSB322IRWBR (Alternative with VCONN swap)

🧩

IoT Devices

In IoT devices, the TUSB321RWBR provides USB Type-C connectivity for charging and data. Its low power consumption is critical for battery-powered devices. The device supports DRP mode, allowing the IoT device to act as a host or peripheral. Its compact X2QFN package is suitable for small form factors, and its support for up to 3 A current advertisement enables fast charging.

Recommended

TUSB321AIRWBR (Drop-in replacement with enhanced features) TUSB322IRWBR (Alternative with additional features)

Recommended Products Summary

TUSB321AIRWBR Enhanced alternative with USB Type-C 1.3 support Used in: Smartphones, Tablets, Laptops, Docking Stations, USB Type-C Chargers, IoT Devices TUSB322IRWBR Alternative with additional features Used in: Smartphones, Tablets, Laptops, Docking Stations, USB Type-C Chargers, IoT Devices

What is the TUSB321RWBR?

The TUSB321RWBR is a USB Type-C configuration channel (CC) logic and port control device from Texas Instruments. It manages the CC1 and CC2 pins to detect port attach/detach, cable orientation, and role, and supports up to 3 A current advertisement. It is available in a 12-pin X2QFN (1.6x1.6 mm) package.

What is the supply voltage range of TUSB321RWBR?

The TUSB321RWBR operates with a supply voltage (VCC) from 4.5 V to 5.5 V. This is typical for USB Type-C interface ICs, allowing direct connection to the 5 V USB bus. According to the TI datasheet, the device is designed for standard USB power rails.

What is the price of TUSB321RWBR?

As of 2026-08-27, the TUSB321RWBR is priced at approximately $1.25 for single-unit quantities, dropping to $0.65 at 1000 units. Prices vary by distributor and quantity; check DigiKey or Mouser for current pricing and availability.

Where can I buy TUSB321RWBR?

The TUSB321RWBR is available from major distributors including DigiKey, Mouser, and Octopart. It is also available directly from Texas Instruments. As of 2026-08-27, DigiKey lists it as in stock and ships same day. Check distributor websites for real-time inventory.

What is the lead time for TUSB321RWBR?

The lead time for TUSB321RWBR is typically 1-2 weeks from major distributors like DigiKey and Mouser, as of 2026-08-27. For large quantities, lead time may extend to 4-6 weeks. Contact the distributor for current lead time estimates.

Is TUSB321RWBR in stock?

As of 2026-08-27, the TUSB321RWBR is in stock at DigiKey and Mouser. Availability can change quickly; check the distributor websites for real-time stock status. Octopart also shows availability from multiple distributors.

What is the difference between TUSB321RWBR and TUSB321AIRWBR?

The TUSB321RWBR and TUSB321AIRWBR are both USB Type-C CC logic devices from TI, but the TUSB321AIRWBR is an enhanced version with additional features such as support for USB Type-C Specification 1.3 and improved dead battery mode. The TUSB321RWBR is backward compatible with USB Type-C 1.0 and 1.1. Both are pin-compatible in the same X2QFN package.

What is the difference between TUSB321RWBR and TUSB322IRWBR?

The TUSB321RWBR and TUSB322IRWBR are both USB Type-C CC logic devices from TI. The TUSB322IRWBR supports USB Type-C Specification 1.3 and includes additional features like VCONN swap and Try.SRC/Try.SNK modes. The TUSB321RWBR supports up to USB Type-C 1.1. Both are pin-compatible in the same X2QFN package.

When should I choose TUSB321RWBR over TUSB321AIRWBR?

Choose the TUSB321RWBR when you need a cost-effective, basic USB Type-C CC logic solution that supports USB Type-C 1.1 and up to 3 A current advertisement. If you require the latest USB Type-C 1.3 features, such as enhanced dead battery mode or Try.SRC/Try.SNK, choose the TUSB321AIRWBR. Both are pin-compatible, so you can upgrade without PCB changes.

What is the best drop-in replacement for TUSB321RWBR?

The best drop-in replacement for TUSB321RWBR is the TUSB321AIRWBR from Texas Instruments, as it is pin-compatible and offers enhanced features. Other alternatives include the TUSB322IRWBR and TUSB320LAIRWBR, both from TI, which are also pin-compatible in the same X2QFN package. Verify pinout and specifications before substitution.

Can TUSB321AIRWBR replace TUSB321RWBR?

Yes, the TUSB321AIRWBR can replace the TUSB321RWBR as it is pin-to-pin compatible in the same 12-X2QFN package. The TUSB321AIRWBR offers additional features and is backward compatible, making it a suitable drop-in replacement. Always verify the datasheet for exact pinout and electrical characteristics.

Where can I download the TUSB321RWBR datasheet PDF?

The TUSB321RWBR datasheet PDF can be downloaded from the Texas Instruments product page at https://www.ti.com/lit/ds/symlink/tusb321.pdf. It is also available on distributor sites like DigiKey and Mouser, and on datasheet aggregators like Alldatasheet.

Where can I find the TUSB321RWBR pinout?

The TUSB321RWBR pinout is detailed in the datasheet available from Texas Instruments at https://www.ti.com/lit/ds/symlink/tusb321.pdf. The pinout includes CC1, CC2, VCC, GND, and current mode pins. Refer to the datasheet for the complete pin diagram and descriptions.

What are the key specifications of TUSB321RWBR that engineers should know?

The TUSB321RWBR is a USB Type-C CC logic device supporting USB Type-C 1.1, with up to 3 A current advertisement. It operates from 4.5 V to 5.5 V, comes in a 12-X2QFN (1.6x1.6 mm) package, and supports DFP, UFP, and DRP modes. It includes an integrated VCONN switch and dead battery mode. These specs make it suitable for compact USB Type-C designs.

What is the best non-TI equivalent for TUSB321RWBR?

A non-TI equivalent for TUSB321RWBR is the STUSB4500 from STMicroelectronics, which is a USB Type-C controller with CC logic and power delivery support. However, it is not pin-compatible with the X2QFN package, so it is not a drop-in replacement. For a drop-in replacement, stick with TI's TUSB321A or TUSB322 series.

Engineering reference data for TUSB321RWBR — comparison, design guidance, and compliance information.

Selection Guide

Choose the TUSB321RWBR when you need a basic, cost-effective USB Type-C CC logic solution supporting up to 3A current advertisement and USB Type-C 1.1. It is ideal for smartphones, tablets, and IoT devices where space is limited. If you require the latest USB Type-C 1.3 features, such as enhanced dead battery mode or Try.SRC/Try.SNK, consider the TUSB321AIRWBR or TUSB322IRWBR. The TUSB320LAIRWBR is suitable for applications with lower current requirements (up to 1.5A). All alternatives are pin-compatible, allowing easy upgrades without PCB changes.

Comparison with Alternatives

Parameter	This Product	TUSB321AIRWBR	TUSB322IRWBR	TUSB320LAIRWBR
Package	12-X2QFN (1.6x1.6 mm)	12-X2QFN (1.6x1.6 mm)	12-X2QFN (1.6x1.6 mm)	12-X2QFN (1.6x1.6 mm)
Brand	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
USB Type-C Specification	1.1	1.3	1.3	1.1
Current Advertisement	Up to 3 A	Up to 3 A	Up to 3 A	Up to 1.5 A
VCONN Switch	Yes	Yes	Yes	Yes
Dead Battery Mode	Yes	Yes (enhanced)	Yes	Yes
Try.SRC/Try.SNK	No	No	Yes	No
Supply Voltage Range	4.5V to 5.5V	4.5V to 5.5V	4.5V to 5.5V	4.5V to 5.5V

Key Differentiators

Supports up to 3A current advertisement (vs TUSB320LAIRWBR)
Backward compatible with USB Type-C 1.0 (vs TUSB321AIRWBR)
Cost-effective solution (vs TUSB322IRWBR)

Design Notes

Place the TUSB321RWBR close to the USB Type-C connector to minimize trace lengths on the CC1 and CC2 lines. Route CC lines with controlled impedance (typically 90 ohms differential) to maintain signal integrity. Ensure proper decoupling with a 0.1uF capacitor on VCC and a 1uF capacitor on VBUS.

The TUSB321RWBR operates from 4.5V to 5.5V. Ensure the VCC supply is clean and stable, with adequate decoupling. The integrated VCONN switch can source up to 3A, so ensure the PCB traces and power supply can handle this current. Use a low-ESR capacitor on VCONN to reduce voltage ripple.

Do not exceed the maximum supply voltage of 5.5V. Ensure the MODE pin is configured correctly for the desired role (DFP, UFP, or DRP). The CURRENT_MODE pin must be set according to the desired current advertisement level. Incorrect configuration can lead to improper port behavior.

Compliance Information

RoHS

Compliant

REACH

Compliant

AEC-Q100

Not Applicable

Lead Free

Yes

Halogen Free

Unknown

Conflict Minerals

Compliant

RoHS and REACH compliant per TI product page. Not AEC-Q100 qualified as it is not an automotive-grade device.

Data verified on: 2026-08-27

Sources: Distributor, Manufacturer_Product_Page, Distributor, Datasheet_Aggregator, Manufacturer_Product_Page, Octopart

Related Components & Terms

Texas Instruments TUSB321RWBR TUSB321AIRWBR TUSB322IRWBR TUSB320LAIRWBR USB Type-C Configuration Channel (CC) DFP UFP DRP X2QFN RoHS REACH VCONN Dead Battery Mode