TUSB321RWBR - USB Type-C CC Logic 3A X2QFN-12 | Texas Instruments
料号： TUSB321RWBR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.68 | $0.68 |
| 10 | $0.61 | $6.10 |
| 100 | $0.49 | $49.00 |
| 500 | $0.42 | $210.00 |
| 1,000 | $0.35 | $350.00 |
TUSB321RWBR 概述
A USB Type-C CC logic device is a specialized interface IC that manages the configuration channel pins of a USB Type-C connector. Within the system hierarchy, it sits between the USB Type-C connector and the USB controller or power path, belonging to the interface IC family inside integrated circuits. The CC logic block monitors the CC1 and CC2 pins for pullup or pulldown resistances to determine port attach and detach, cable orientation, and role detection, which are mandatory functions for any Type-C port.
Key features include three mode configurations - host only (DFP/Source), device only (UFP/Sink), and dual role port (DRP) - where the device alternates between DFP and UFP roles per the Type-C Specifications. An integrated VCONN switch powers electronically marked (e-marked) cables, and dead battery mode allows a sink device to present as a Type-C device even before system power is available.
Technically, the TUSB321 integrates CC termination, Rp/Rd detection, cable orientation indication, and port power control in a single low-power die, minimizing external components and bill-of-materials cost. The compact X2QFN package with 1.6x1.6 mm footprint suits space-constrained portable designs.
Typical applications include smartphones, tablets, laptops, docking stations, chargers, and USB Type-C enabled accessories. Any design needing compliant Type-C attach detection and current advertisement benefits from this device.
For design, place the TUSB321RWBR close to the Type-C connector to keep CC traces short, decouple VCC with a 1 uF capacitor, and configure the current mode pin for the intended 3 A advertisement level as described in TI datasheet (SLVSDF4).
直接替换替代料： TUSB321RWBR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： TUSB321RWBR （相同外形与封装尺寸） ——差异在于 Function, Package, Current Advertisement, RoHS Status, Cable Orientation Detection.
快速对比工具——选择替代料号进行并排对比：
TUSB321AIRWBR
✅ 直接替换📋 参考替代料（不在目录中）
TUSB321RWBR-Q1
✅ 直接替换✓ 有现货
$0.33 / 个
查看数据手册 →TUSB322IRWBR
✅ 直接替换📋 参考替代料（不在目录中）
TUSB320LAIRWBR
✅ 直接替换✓ 有现货
$0.74 / 个
查看数据手册 →TUSB321RWBR 最大额定值与电气特性
| 功能 | USB Type-C Configuration Channel (CC) Logic and Port Control with VCONN |
| USB Type-C Specification | 1.1 (backward compatible with 1.0) |
| Port Modes | DFP (Source), UFP (Sink), DRP |
| Current Advertisement | Up to 3 A via dedicated current mode pin |
| VCONN Switch | Integrated, for e-marked cables |
| Dead Battery Mode | Supported (sink) |
| 封装 | X2QFN-12 (1.6 x 1.6 mm) |
| 安装类型 | Surface Mount |
| Cable Orientation Detection | Yes, via CC1/CC2 monitoring |
| Role Detection | Yes, Rp/Rd resistance detection |
| 接口类型 | USB Interface IC (Specialized) |
| RoHS 状态 | Compliant |
| 生命周期状态 | Active |
TUSB321RWBR 引脚配置
| 引脚 A1 | GND — Ground |
| 引脚 A2 | VCONN — VCONN switch output to power e-marked cables |
| 引脚 A3 | CC1 — Configuration Channel pin 1 |
| 引脚 A4 | CC2 — Configuration Channel pin 2 |
| 引脚 A5 | DIR — Cable orientation indication output |
| 引脚 A6 | ID — Accessory / role detection output |
| 引脚 A7 | EN — Mode configuration (DFP/UFP/DRP) enable input |
| 引脚 A8 | OUT — Current mode advertisement output |
| 引脚 A9 | VCC — Power supply |
| 引脚 A10 | VBUS_DET — VBUS detection input |
典型应用
TUSB321RWBR 适用于 6 应用s: Smartphones and Tablets, Laptops and Notebooks, Docking Stations, Wall Chargers and Adapters, Automotive USB Type-C Ports, USB Type-C Accessories.
Smartphones and Tablets
The TUSB321RWBR fits smartphone and tablet USB-C ports because its 1.6x1.6 mm X2QFN footprint and hardware-only CC logic minimize board area and firmware burden. Dead battery mode lets a depleted handset present a valid Type-C sink to the charger for immediate VBUS application, while 3 A advertisement enables fast-charge detection with compliant Rp signaling. DIR output drives the USB 3.x mux for reversible cable orientation without additional logic.
推荐
Laptops and Notebooks
In laptop host ports configured as DFP/Source, the TUSB321RWBR provides compliant Rp pullups to advertise current capability up to 3 A and an integrated VCONN switch to power e-marked cables. Hardware DFP configuration removes firmware dependencies, and CC attach detection gates VBUS application for safety. The compact X2QFN-12 lets designers place the device directly at the Type-C connector for short, controlled CC routing.
推荐
Docking Stations
Docking station designs benefit from the TUSB321RWBR DRP mode, in which the device alternates DFP and UFP roles according to USB Type-C Specification 1.1, enabling host- or device-facing behavior in a single port. Role and orientation detection via CC1/CC2 resistance monitoring drives downstream muxes and power switches, while the 3 A current mode pin supports the higher power delivery levels docks typically advertise.
推荐
Wall Chargers and Adapters
Type-C wall chargers configured as DFP use the TUSB321RWBR to advertise current levels through Rp signaling on CC pins and to detect proper cable attach before enabling VBUS output. The integrated VCONN switch powers electronically marked cables so chargers can comply with Type-C Specification 1.1 e-marker requirements. Its low-power hardware-only operation keeps standby drain minimal for always-plugged adapters.
推荐
Automotive USB Type-C Ports
For automotive infotainment and charging ports, the pin-compatible AEC-Q100 variants TUSB321AIRWBR and TUSB321RWBR-Q1 provide the identical X2QFN-12 footprint with automotive qualification, allowing one PCB design across consumer and vehicle product tiers. CC attach detection gates power application, cable orientation indication drives USB muxes, and 3 A advertisement supports modern fast-charging requirements in vehicles.
推荐
USB Type-C Accessories
Accessories such as flash drives, headsets, and dongles configured as UFP use the TUSB321RWBR Rd termination and attach detection to enumerate cleanly with any Type-C host. Hardware pin configuration (EN/ADDR) sets device-only mode without firmware, and the 1.6x1.6 mm package suits miniaturized accessory housings. Cable orientation output simplifies routing SuperSpeed lanes through a mux toward the host connector.
推荐
推荐产品汇总
工程参考数据： TUSB321RWBR ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | TUSB321AIRWBR | TUSB321RWBR-Q1 | TUSB322IRWBR | TUSB320LAIRWBR |
|---|---|---|---|---|---|
| Package | X2QFN-12 (1.6x1.6 mm) | X2QFN-12 (1.6x1.6 mm) - same | X2QFN-12 (1.6x1.6 mm) - same | X2QFN-12 (1.6x1.6 mm) - same | X2QFN-12 (1.6x1.6 mm) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Port Modes | DFP / UFP / DRP | DFP / UFP / DRP | DFP / UFP / DRP | DFP / UFP / DRP | DFP / UFP / DRP + AUD |
| Current Advertisement | Up to 3 A via current mode pin | Up to 3 A | Up to 3 A | Up to 3 A (configurable) | Default / 1.5 A / 3 A |
| VCONN Switch | Integrated | Integrated | Integrated | Integrated | Integrated |
| Configuration Interface | Hardware pins | Hardware pins | Hardware pins | I2C or hardware pins | Hardware pins / I2C option |
| Dead Battery Mode | Yes (sink) | Yes (sink) | Yes (sink) | Yes | Yes |
关键差异点
- Integrated VCONN switch for e-marked cables （对比 TUSB320LAIRWBR)
- Hardware-only configuration minimizes firmware effort （对比 TUSB322IRWBR)
- Same-footprint automotive upgrade path （对比 TUSB321AIRWBR)
设计说明
Place the TUSB321RWBR as close to the USB Type-C receptacle CC pins as practical. CC1/CC2 traces carry sensitive Rp/Rd detection levels, so keep them short (ideally under 20 mm) and route them as a length-matched pair away from high-speed USB3 SuperSpeed pairs to prevent capacitive coupling from disturbing attach detection timing.
Decouple the VCC supply pin with a 1 uF ceramic capacitor placed within 2 mm of the pin, per TI datasheet SLVSDF4 typical application. Ensure VBUS detection and VCONN switch rating align with the current the system plans to advertise - do not advertise 3 A on the current mode pin unless the downstream power path (switch, connector, PCB traces) is rated for 3 A continuous.
X2QFN packages with 0.4 mm pitch require accurate land pattern and stencil design - use a 90-100 um stencil aperture reduction per TI datasheet mechanical drawing to avoid solder bridging. Also verify the EN pin configuration sets the intended DFP/UFP/DRP mode before power-up; misconfiguration results in failed attach detection that is easy to mistake for a hardware fault.
合规信息
RoHS compliant per distributor listings. AEC-Q100 status: this commercial part is not automotive qualified; use TUSB321RWBR-Q1 or TUSB321AIRWBR. Lead-free/halogen-free status should be confirmed on the TI product page environmental section.
