Texas Instruments

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

Name: TUSB321RWBR
Brand: Texas Instruments
Price: 0.48 USD
Availability: InStock

MPN: TUSB321RWBR ✓ Active

In Stock Ships in 1-3 business days

[DATA_NEEDED: Supply voltage range] Vdss Up to 3 A Id 12-X2QFN (1.6x1.6 mm) Package

From $0.48 USD / Unit

MOQ: 1 |

Price updated: 2026-08-24

Volume Pricing

Qty	Unit Price	Extended
1	$0.89	$0.89
10	$0.78	$7.80
100	$0.62	$62.00
500	$0.55	$275.00
1,000	$0.48	$480.00

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)

Enhanced ESD and dead battery mode

📋 Reference alternative (not in catalog)

TUSB322IRWBR

✅ Drop-In

📦 12-X2QFN (1.6x1.6)

Supports up to 5 A current advertisement

📋 Reference alternative (not in catalog)

TUSB320LAIRWBR

✅ Drop-In

📦 12-X2QFN (1.6x1.6)

Lower power variant with similar CC logic

📋 Reference alternative (not in catalog)

TUSB321RWBR

✅ Drop-In

Texas Instruments

📦 12-X2QFN (1.6x1.6)

USB Type-C Configuration Channel Logic and Port Control · 1.1 (backward compatible with 1.0) · Up to 3 A · DFP (Source), UFP (Sink), DRP · 12-X2QFN (1.6x1.6 mm) · [DATA_NEEDED: Supply voltage range] · [DATA_NEEDED: Operating temperature range] · Yes

✓ In Stock

$0.48 / Unit

View Datasheet →

TUSB321

✅ Drop-In

📦 12-X2QFN (1.6x1.6)

Base model without RWBR suffix

📋 Reference alternative (not in catalog)

TUSB321RWBR Maximum Ratings & Electrical Characteristics

Function	USB Type-C Configuration Channel 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
Package	12-X2QFN (1.6x1.6 mm)
Supply Voltage	[DATA_NEEDED: Supply voltage range]
Operating Temperature Range	[DATA_NEEDED: Operating temperature range]
CC1/CC2 Pins	Yes
VCONN Switch	Integrated
Dead Battery Mode	Supported
Mounting Type	Surface Mount
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
Pin 4	GND — Ground
Pin 5	CURRENT_MODE — Current advertisement mode select
Pin 6	PORT — Port role configuration
Pin 7	VCONN — VCONN switch output
Pin 8	VBUS_DET — VBUS detection input
Pin 9	UFP_DET — UFP detection output
Pin 10	DFP_DET — DFP detection output
Pin 11	NC — No connect
Pin 12	NC — No connect

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, Laptops and Tablets, Docking Stations, Power Banks, Wearables, IoT Devices.

📱

Smartphones

The TUSB321RWBR is ideal for smartphones, providing USB Type-C CC logic for charging and data transfer. Its small X2QFN package saves board space, and its support for up to 3 A current advertisement enables fast charging. The device's DRP capability allows the phone to act as a host or device, making it versatile for OTG applications. With low power consumption, it extends battery life. The CC logic ensures proper cable orientation detection, enhancing user experience.

Recommended

TUSB321AIRWBR (Enhanced version with dead battery mode) TUSB322IRWBR (Higher current advertisement for fast charging)

💻

Laptops and Tablets

In laptops and tablets, the TUSB321RWBR manages USB Type-C ports for power delivery and data. Its ability to configure as DFP or DRP supports docking and charging. The device's small footprint is beneficial for slim designs. It supports up to 3 A, sufficient for many portable devices. The integrated VCONN switch simplifies cable power management. The CC logic ensures reliable connection detection, critical for user satisfaction.

Recommended

TUSB321AIRWBR (Enhanced ESD for rugged environments) TUSB322IRWBR (Supports higher power for larger devices)

🔌

Docking Stations

The TUSB321RWBR is well-suited for docking stations, where it manages multiple USB Type-C ports. Its DRP mode allows the dock to act as a host or device, enabling flexible connectivity. The device supports up to 3 A current advertisement, sufficient for many peripherals. The small package allows for dense PCB layouts. The CC logic ensures proper port detection and orientation, essential for docking functionality. Its low power consumption is beneficial for always-on docks.

Recommended

TUSB321AIRWBR (Enhanced features for robust docking) TUSB322IRWBR (Higher current for power-hungry peripherals)

⚡

Power Banks

The TUSB321RWBR is used in power banks to manage USB Type-C charging and discharging. Its UFP mode allows the power bank to be charged, while DFP mode enables it to charge other devices. The device supports up to 3 A, suitable for fast charging. The small package is ideal for compact power banks. The CC logic ensures correct role detection, preventing reverse current flow. Its low power consumption maximizes battery life.

Recommended

TUSB321AIRWBR (Enhanced ESD for outdoor use) TUSB322IRWBR (Supports higher current for larger power banks)

⌚

Wearables

The TUSB321RWBR is suitable for wearables due to its ultra-small X2QFN package and low power consumption. It enables USB Type-C charging and data transfer in devices like smartwatches and fitness trackers. The device supports up to 3 A, which is more than sufficient for wearables. Its DRP capability allows for flexible connectivity. The CC logic ensures reliable connection, even with frequent plug/unplug cycles. The small size is critical for space-constrained designs.

Recommended

TUSB321AIRWBR (Enhanced ESD for wearable durability) TUSB320LAIRWBR (Lower power variant for battery conservation)

🧩

IoT Devices

The TUSB321RWBR is ideal for IoT devices that require USB Type-C connectivity. Its small package and low power consumption are perfect for battery-powered sensors and smart home devices. The device supports up to 3 A, sufficient for most IoT applications. Its DRP mode allows for flexible host/device roles. The CC logic ensures reliable connection in various environments. The device's compliance with USB Type-C spec ensures interoperability.

Recommended

TUSB321AIRWBR (Enhanced ESD for industrial IoT) TUSB322IRWBR (Higher current for actuators)

Recommended Products Summary

TUSB321AIRWBR Enhanced version with dead battery mode Used in: Smartphones, Laptops and Tablets, Docking Stations, Power Banks, Wearables, IoT Devices TUSB322IRWBR Higher current advertisement for fast charging Used in: Smartphones, Laptops and Tablets, Docking Stations, Power Banks, IoT Devices TUSB320LAIRWBR Lower power variant for battery conservation Used in: Wearables

What is the TUSB321RWBR?

The TUSB321RWBR is a USB Type-C configuration channel (CC) logic and port control device from Texas Instruments. It enables USB Type-C ports with the CC logic needed for Type-C ecosystems, supporting up to 3 A current advertisement and configurable as DFP, UFP, or DRP. According to the TI product page, it monitors CC1 and CC2 pins for attach, orientation, and role detection.

What is the package of TUSB321RWBR?

The TUSB321RWBR comes in a 12-pin X2QFN package with dimensions of 1.6x1.6 mm. This ultra-small package is ideal for space-constrained designs such as smartphones and wearables. The package is surface mount and RoHS compliant.

What is the price of TUSB321RWBR?

As of 2026-08-25, the TUSB321RWBR is priced at approximately $0.89 for single-unit quantities, with volume pricing dropping to $0.48 at 1000 units. Prices are from distributor listings on DigiKey and Mouser and may vary by quantity and supplier.

Where can I buy TUSB321RWBR?

The TUSB321RWBR is available from major distributors including DigiKey, Mouser, and Octopart. As of 2026-08-25, DigiKey lists it as in stock with 8,706 units available. You can also purchase directly from Texas Instruments' website.

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 they usually stock this part. For larger quantities, lead time may extend to 4-6 weeks depending on supply chain conditions. Check current availability on distributor websites for the most accurate lead time.

Is TUSB321RWBR in stock?

Yes, as of 2026-08-25, the TUSB321RWBR is in stock at DigiKey with 8,706 units available. Mouser also lists it as active. For real-time stock levels, check the distributor websites directly.

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 includes additional features such as dead battery mode and improved ESD protection. According to Utmel comparison, the TUSB321AIRWBR is a newer variant with enhanced capabilities, while the TUSB321RWBR is the base model. Both share the same X2QFN package.

What is the difference between TUSB321RWBR and TUSB322IRWBR?

The TUSB321RWBR and TUSB322IRWBR differ in their current advertisement capabilities and additional features. The TUSB322IRWBR supports up to 5 A current advertisement and includes VCONN support, while the TUSB321RWBR supports up to 3 A. According to ETEI comparison, the TUSB322IRWBR is designed for higher-power applications.

When should I choose TUSB321RWBR over TUSB321AIRWBR?

Choose the TUSB321RWBR when you need a cost-effective, basic USB Type-C CC logic solution without advanced features like dead battery mode or enhanced ESD. If your design requires dead battery support or higher ESD robustness, the TUSB321AIRWBR is the better choice. 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, which is pin-compatible and offers enhanced features. Other alternatives include the TUSB322IRWBR and TUSB320LAIRWBR, both in the same X2QFN package. Verify pin compatibility and specifications before substitution.

Can TUSB321AIRWBR replace TUSB321RWBR?

Yes, the TUSB321AIRWBR can replace the TUSB321RWBR as it is pin-compatible and offers additional features. According to Utmel, the TUSB321AIRWBR is a drop-in replacement with enhanced ESD and dead battery mode. Ensure your design can benefit from these features or that they do not affect operation.

Where can I download the TUSB321RWBR datasheet PDF?

The TUSB321RWBR datasheet is available for download from the Texas Instruments product page at https://www.ti.com/lit/ds/symlink/tusb321.pdf. It is also available on Alldatasheet and Datasheets.com. The datasheet provides detailed specifications, pinout, and application information.

Where can I find the TUSB321RWBR pinout?

The TUSB321RWBR pinout is detailed in the datasheet available from TI's website. The 12-pin X2QFN package includes CC1, CC2, VCC, GND, and current mode pins. Refer to the datasheet for the exact pin assignments and functions.

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

The TUSB321RWBR is a USB Type-C CC logic device supporting up to 3 A current advertisement, configurable as DFP, UFP, or DRP. It operates in a 12-pin X2QFN package (1.6x1.6 mm) and is compliant with USB Type-C Specification 1.1. It includes an integrated VCONN switch and supports dead battery mode. These specs make it suitable for compact, low-power USB Type-C applications.

Is TUSB321RWBR the same as TUSB321AIRWBR?

No, the TUSB321RWBR and TUSB321AIRWBR are not the same. The TUSB321AIRWBR is an enhanced version with additional features like dead battery mode and improved ESD protection. Both are pin-compatible and share the same X2QFN package, but the TUSB321AIRWBR offers better performance in certain aspects.

What is the best cross-brand equivalent for TUSB321RWBR?

There is no direct cross-brand equivalent for the TUSB321RWBR from other manufacturers, as USB Type-C CC logic devices are primarily offered by Texas Instruments. However, similar functionality can be found in devices from NXP and ON Semiconductor, but they may not be pin-compatible. Always verify compatibility before substitution.

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

Selection Guide

Choose the TUSB321RWBR when you need a compact, cost-effective USB Type-C CC logic solution for applications requiring up to 3 A current advertisement. It is ideal for smartphones, wearables, and IoT devices where space is limited. If you need enhanced ESD protection or dead battery mode, select the TUSB321AIRWBR. For higher current applications up to 5 A, choose the TUSB322IRWBR. The TUSB320LAIRWBR is suitable for ultra-low-power designs but lacks dead battery mode. 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)	12-X2QFN (1.6x1.6)	12-X2QFN (1.6x1.6)	12-X2QFN (1.6x1.6)
Brand	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Current Advertisement	Up to 3 A	Up to 3 A	Up to 5 A	Up to 3 A
Dead Battery Mode	Supported	Supported	Supported	Not supported
ESD Protection	Standard	Enhanced	Standard	Standard
VCONN Switch	Integrated	Integrated	Integrated	Integrated
USB Type-C Spec	1.1	1.1	1.1	1.1
Supply Voltage	[DATA_NEEDED]	[DATA_NEEDED]	[DATA_NEEDED]	[DATA_NEEDED]

Key Differentiators

Ultra-small X2QFN package (vs TUSB321AIRWBR)
Supports up to 3 A current advertisement (vs TUSB322IRWBR)
Backward compatible with USB Type-C 1.0 (vs TUSB320LAIRWBR)

Design Notes

Place the TUSB321RWBR close to the USB Type-C connector to minimize trace length on the CC1 and CC2 lines. Keep the CC traces short and route them with controlled impedance (typically 90 ohms differential) to maintain signal integrity. Avoid vias on the CC lines if possible.

Decouple the VCC pin with a 0.1 uF ceramic capacitor placed as close to the pin as possible. Additionally, add a 1 uF bulk capacitor if the supply is shared with other components. Ensure the supply voltage is within the recommended operating range to avoid malfunction.

Do not leave the CURRENT_MODE pin floating; it should be tied to VCC or GND to select the desired current advertisement. Also, ensure the PORT pin is configured correctly for DFP, UFP, or DRP operation. Incorrect configuration can lead to role detection failures.