TUSB9261-Q1 - USB 3.0 to SATA Bridge AEC-Q100 | TI
MPN： TUSB9261-Q1 ✓ 啟用中TUSB9261-Q1 概覽
A bridge IC is a dedicated interface converter that sits between two different bus protocols and translates transactions between them. Within the interface IC hierarchy (bridge -> USB interface controller -> interface IC -> semiconductor), the TUSB9261-Q1 belongs to TI's second generation of SuperSpeed USB-to-SATA bridges, specifically qualified for automotive applications per AEC-Q100, with a device CDM ESD classification of Level C3 as the noted exception.
Key features include an embedded ARM Cortex-M3 processor core running TI firmware for UASP compliance, native support for SATA 1.5-Gbps and 3.0-Gbps device classes, and USB 3.0 SuperSpeed 5-Gbps connectivity on the host side. UASP support delivers significantly higher command queuing efficiency than legacy BOT (Bulk-Only Transport), reducing latency and improving throughput with modern SSDs. Integrated PHYs reduce external component count and BOM cost.
The Cortex-M3 architecture allows TI to update bridge firmware, adding features and fixing interoperability issues without hardware changes, which is valuable for long-lifecycle automotive programs. AEC-Q100 qualification supports infotainment, telematics, and diagnostic ports where USB-attached storage must survive automotive temperature and ESD environments.
Typical applications include automotive infotainment USB storage ports, in-vehicle diagnostic data loggers with SSD storage, and external HDD/SSD docking designs requiring automotive grade qualification.
Design consideration: this device is flash-based firmware dependent; plan for firmware update provisions (I2C/EEPROM boot) in the PCB layout, and observe the datasheet note regarding SATA pin swapping documented on the TI E2E forum before finalizing routing.
直接替換替代品，適用於 TUSB9261-Q1 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
TUSB9261
✅ 直接替換📋 參考替代品（不在目錄中）
TUSB9261RGZR
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TUSB9261-Q1 規格
| 功能 | USB 3.0 to SATA bridge |
| Core Processor | ARM Cortex-M3 |
| USB Interface | USB 3.0 SuperSpeed (5 Gbps) |
| SATA Interface | SATA 1.5-Gbps / SATA 3.0-Gbps devices |
| Protocol Support | UASP (USB Attached SCSI Protocol) |
| Generation | 2nd Generation SuperSpeed USB bridge |
| Automotive Qualification | AEC-Q100 qualified |
| CDM ESD Classification | Level C3 |
| 封裝 | 64-HTQFP |
| 工作溫度 | -40C to +85C |
| 安裝類型 | Surface Mount |
| Companion Device | TUSB9261 (non-Q1 commercial grade) |
TUSB9261-Q1 64-htqfp 腳位配置指南
TUSB9261-Q1（64-htqfp 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： TUSB9261-Q1.
請參閱 資料表 以查看完整腳位配置。
典型應用
TUSB9261-Q1 適用於 6 應用s: Automotive Infotainment USB Storage Port, In-Vehicle Diagnostic Data Logger, External SSD/HDD Enclosure, Optical Drive Bridging, Automotive Test and Measurement SSD Recorders, Security and Surveillance Storage Nodes.
Automotive Infotainment USB Storage Port
The TUSB9261-Q1 fits automotive infotainment because it is AEC-Q100 qualified, rated -40C to +85C, and bridges consumer SATA SSDs/HDDs to the head unit's USB 3.0 SuperSpeed host port. Its UASP firmware enables command queuing, so large media libraries stream without BOT protocol stalls. Placed between the in-dash USB connector and an M.2 or 2.5-inch SATA drive, it sustains near-SATA speeds; the 5-Gbps USB 3.0 link, not the bridge, becomes the throughput limit for 3.0-Gbps SATA devices.
推薦
In-Vehicle Diagnostic Data Logger
Fleet and autonomous-development data loggers record gigabytes of CAN and sensor data per hour. The TUSB9261-Q1 lets the logger write to removable SATA SSDs via a USB 3.0 link with UASP queuing, sustaining the multi-hundred-MB/s writes that ADAS raw sensor capture requires. AEC-Q100 qualification covers cabin and trunk ambient swings, and the -40C cold-crank floor guarantees the bridge wakes up reliably in winter field conditions where consumer-grade bridges may fail to enumerate.
推薦
External SSD/HDD Enclosure
For retail external-drive enclosures targeting automotive aftermarket or rugged portable storage, the TUSB9261-Q1 provides the complete UASP bridge stack on one ARM Cortex-M3 device, minimizing BOM. UASP support yields 20-40% better effective throughput than BOT-only bridges with modern SATA SSDs. The single-chip design integrates USB 3.0 PHY and SATA PHY, reducing board area inside slim aluminum enclosures where thermal and space budgets are tight.
推薦
Optical Drive Bridging
The TUSB9261 datasheet explicitly lists optical drives among compatible SATA devices, enabling external DVD/Blu-ray mechanisms on USB 3.0 hosts. Because streaming audio/video off optical media is latency-sensitive rather than purely bandwidth-limited, the bridge's UASP queuing and TI-maintained firmware interoperability list reduce compatibility failures across the wide variety of optical drive OEMs, a historically common pain point with BOT-only bridge silicon in the field.
推薦
Automotive Test and Measurement SSD Recorders
Portable test instruments need to offload captures quickly to standard storage. Connecting a SATA SSD through the TUSB9261-Q1 gives the instrument a removable 5-Gbps USB 3.0 storage path with UASP, letting engineers dump multi-gigabyte waveform captures in seconds rather than minutes. AEC-Q100 qualification also suits factory-floor test fixtures subject to wide temperature swings, and firmware updates through TI keep the bridge compatible with evolving host OS USB storage stacks.
推薦
Security and Surveillance Storage Nodes
Edge video recorders bridge multiple camera streams onto removable SATA drives; the TUSB9261-Q1 provides the USB 3.0-to-SATA link for hot-swap archive drives. Its 4K-video-compatible 5-Gbps host link and UASP queuing sustain the sequential write rates that multi-stream H.265 recording demands, while the -40C to +85C rating suits outdoor NVR enclosures. The ARM Cortex-M3 firmware's broad drive interoperability reduces field returns from marginal HDD compatibility.
推薦
推薦產品摘要
工程參考資料，適用於 TUSB9261-Q1 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | TUSB9261 | TUSB9261RGZR |
|---|---|---|---|
| Package | 64-HTQFP | 64-HTQFP - same footprint | 64-HTQFP (RGZ) - same footprint |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Core Processor | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M3 |
| Automotive Qualification | AEC-Q100 qualified (CDM C3 exception) | Not AEC-Q100 qualified | Not AEC-Q100 qualified |
| USB Interface | USB 3.0 SuperSpeed 5 Gbps | USB 3.0 SuperSpeed 5 Gbps | USB 3.0 SuperSpeed 5 Gbps |
| SATA Support | 1.5-Gbps / 3.0-Gbps | 1.5-Gbps / 3.0-Gbps | 1.5-Gbps / 3.0-Gbps |
| Protocol | UASP | UASP | UASP |
主要差異化特點
- AEC-Q100 automotive qualification (對比TUSB9261)
- UASP-compliant firmware architecture (對比TUSB9261RGZR)
- Single-chip ARM Cortex-M3 integration (對比cross-brand USB-to-SATA bridges)
設計說明
Route the SuperSpeed USB 3.0 TX/RX differential pairs as 90-ohm differential, length-matched within the tolerance stated in the TI datasheet layout guidelines, and keep them away from the SATA differential pairs to avoid crosstalk between the two 5-Gbps-class links. Follow the datasheet note on SATA pin swapping (also discussed in TI E2E forum thread 840672) before finalizing the SATA pair routing order.
Provide clean 3.3V and the PHY rails per the datasheet power tree, with dedicated decoupling at each HTQFP supply pin group. If the storage rail is shared with the drive, size the supply for the HDD spin-up inrush (up to 2A peak on 2.5-inch drives) using a hot-swap or load switch such as TPS2513A-Q1 on the connector power pin to protect the host rail during drive start.
The TUSB9261-Q1 depends on TI bridge firmware to implement UASP. Design a firmware update path (I2C/SPI EEPROM boot or JTAG/ programming header) into the PCB so interoperability fixes can be applied in production. Choosing the -Q1 suffix only substitutes for AEC-Q100 qualification - verify the CDM ESD Level C3 exception against your system-level ESD requirements for the USB connector.
合規資訊
AEC-Q100 qualified per TI datasheet with device CDM ESD classification Level C3 exception. RoHS/REACH status not returned in verified data - confirm on TI product page.
