TUSB9261-Q1 - USB 3.0 to SATA Bridge AEC-Q100 | TI
MPN: TUSB9261-Q1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
Drop-in alternatives for TUSB9261-Q1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TUSB9261
β Drop-Inπ Reference alternative (not in catalog)
TUSB9261RGZR
β Drop-Inπ Reference alternative (not in catalog)
TUSB9261-Q1 Maximum Ratings & Electrical Characteristics
| Function | 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 |
| Package | 64-HTQFP |
| Operating Temperature | -40C to +85C |
| Supply Voltage | [DATA_NEEDED: supply voltage] |
| Mounting Type | Surface Mount |
| Companion Device | TUSB9261 (non-Q1 commercial grade) |
| RoHS Status | [DATA_NEEDED: RoHS status] |
| MSL Level | [DATA_NEEDED: MSL level] |
TUSB9261-Q1 64-htqfp Pin Configuration Guide
Complete pinout information for TUSB9261-Q1 (64-htqfp package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for TUSB9261-Q1.
Refer to the datasheet for full pin configuration.
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
TUSB9261-Q1 is suitable for 6 applications: 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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Recommended Products Summary
Engineering reference data for TUSB9261-Q1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 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 |
| Operating Temperature | -40C to +85C | [DATA_NEEDED] | [DATA_NEEDED] |
| 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 |
Key Differentiators
- AEC-Q100 automotive qualification (vs TUSB9261)
- UASP-compliant firmware architecture (vs TUSB9261RGZR)
- Single-chip ARM Cortex-M3 integration (vs cross-brand USB-to-SATA bridges)
Design Notes
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.
Compliance Information
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.
