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Texas Instruments TUSB8041ARGCT
- Part No.:
- TUSB8041ARGCT
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
TUSB8041ARGCT.pdf
- Description:
- IC USB HUB CONTROLLER 64VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:233
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Product details
Overview
TUSB8041ARGCT from Texas Instruments is a four-port USB 3.1 Gen1 hub IC supporting simultaneous SuperSpeed (5 Gbps) and high-speed (480 Mbps) upstream connectivity, with full-speed/low-speed fallback; it implements Multi-Transaction Translator (MTT) architecture with four independent transaction translators and supports per-port power switching, battery charging (BC1.2 CDP/DCP/ACP), and 24-MHz single-clock operation in docking stations and monitor hubs.
For engineers reviewing the TUSB8041ARGCT datasheet, TUSB8041ARGCT pinout, TUSB8041ARGCT application, or TUSB8041ARGCT equivalent, key selection criteria include USB 3.1 Gen1 hub compliance, MTT vs. STT architecture trade-offs, per-port vs. ganged power control configuration, BC1.2 charging mode support (CDP/DCP/ACP), and 64-pin VQFN (9 mm × 9 mm) thermal and layout constraints.
Technical Context
The TUSB8041ARGCT integrates a USB 3.1 Gen1 hub controller with dual-mode upstream port (SuperSpeed + HS/FS/LS) and four downstream ports configurable for SuperSpeed, high-speed, full-speed, or low-speed operation. Its MTT architecture allocates two asynchronous endpoint buffers per transaction translator to isolate bandwidth across ports.
It supports three battery charging modes-CDP (upstream connected), DCP (upstream unconnected, YD/T 1591-2009 compliant), and ACP1/ACP2 divider-based modes-with automatic transition sequencing when upstream is absent. Configuration is enabled via pin strapping, OTP ROM, or I2C/SMBus interface for VID/PID, port customization, and UUID provisioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Hub Type | Four-port USB 3.1 Gen1 (5 Gbps) hub with MTT architecture and four independent transaction translators |
| Upstream Interface | Simultaneous SuperSpeed + high-speed/full-speed/low-speed; disables SuperSpeed if upstream only supports HS/FS/LS |
| Downstream Ports | Four configurable ports supporting SuperSpeed, high-speed, full-speed, or low-speed; each with dedicated power control and over-current detection |
| Battery Charging | BC1.2-compliant CDP, DCP (YD/T 1591-2009), and ACP1/ACP2 modes; automatic mode transitions on upstream disconnect |
| Supply Voltages | 1.1 V (VDD, core logic) and 3.3 V (VDD33, I/O); operating temperature range 0°C to 70°C |
| Configuration Interface | I2C/SMBus slave or EEPROM read at 100 kHz; OTP ROM support for VID/PID/port settings; no serial number or string storage in OTP |
| Package | 64-pin VQFN (RGC), 9.00 mm × 9.00 mm, with exposed thermal pad requiring PCB ground connection |
Pinout & Package
Package: 64-pin VQFN (RGC), 9.00 mm × 9.00 mm, with exposed thermal pad (VSS) requiring direct PCB ground connection for thermal management and EMI control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| USB_SSTXP_UP / USB_SSTXM_UP | SuperSpeed upstream transmitter differential pair | Drives 5-Gbps differential signaling to host; requires controlled 90-Ω impedance routing |
| USB_SSRXP_UP / USB_SSRXM_UP | SuperSpeed upstream receiver differential pair | Receives 5-Gbps differential signals from host; includes integrated termination and equalization |
| USB_DP_UP / USB_DM_UP | High-speed upstream transceiver differential pair | Handles 480-Mbps USB 2.0 signaling; shared physical layer with SuperSpeed path |
| PWRCTL1–PWRCTL4 / BATEN1–BATEN4 | Per-port power control / battery charging enable | Active-high or active-low (configurable via PWRCTL_POL) outputs controlling external load switches; sampled at reset for BC1.2 mode selection |
| OVERCUR1z–OVERCUR4z | Per-port over-current detection inputs | Active-low open-drain inputs monitoring downstream port current faults; enables selective or ganged shutdown |
| SCL/SMBCLK / SDA/SMBDAT | I2C/SMBus interface | Configurable for EEPROM programming (VID/PID/strings) or SMBus host communication; supports clock stretching |
| GRSTz | Global reset input | Active-low asynchronous reset forcing all registers to default state; must be held low ≥3 ms after power stabilization |
Key Features
| Feature | Design Value |
|---|---|
| Multi-Transaction Translator (MTT) | Four independent transaction translators with two asynchronous endpoint buffers each, enabling concurrent high-bandwidth device traffic without inter-port contention |
| Flexible Battery Charging | Hardware-supported BC1.2 CDP (host-connected), DCP (YD/T 1591-2009 compliant), and ACP1/ACP2 modes with automatic upstream-disconnect transition sequencing |
| Configurable Power Management | Per-port or ganged power switching with dedicated PWRCTL/BATEN and OVERCURz pins per port; polarity and mode set via strap pins at reset |
| Single-Clock Architecture | 24-MHz crystal or oscillator input (XI/XO) eliminates need for multiple clock sources; internal PLL generates required USB timing domains |
| Customization via Multiple Interfaces | OTP ROM, I2C EEPROM, or SMBus slave interface for VID/PID, port enable/disable, PHY tuning, and manufacturer/product strings (EEPROM/SMBus only) |
| 128-bit UUID Provisioning | Factory-programmed universally unique identifier accessible via register map, enabling secure device identification and firmware binding |
Applications
| Desktop Docking Stations | USB-C Monitor Hubs |
|---|---|
|
Use Scenario: A compact desktop dock connects laptop via USB-C to provide four downstream USB-A ports, video output, and Ethernet. IC Role / Device Role / Timing Role: TUSB8041ARGCT acts as the USB 3.1 Gen1 hub controller managing SuperSpeed data paths between host and peripherals while coordinating BC1.2 charging for attached devices. Use Value: Enables simultaneous 5-Gbps SSD access, 480-Mbps keyboard/mouse HID, and 5-V/1.5-A charging on one port - all within thermal limits of the 9-mm QFN package. |
Use Scenario: A 4K monitor embeds USB hub functionality to extend laptop connectivity without additional cables. IC Role / Device Role / Timing Role: TUSB8041ARGCT serves as the embedded USB hub, negotiating link states (U0/U1/U2) with upstream host and downstream devices to minimize system power during display idle periods. Use Value: Achieves <100 µA suspend current per port in U2 state while maintaining fast resume latency (<10 µs) for HID devices - critical for seamless user experience. |
| Set-Top Box Peripheral Expansion | Industrial Thin Client Terminals |
|
Use Scenario: An IPTV set-top box adds USB storage, webcam, and Bluetooth dongle support via an internal hub module. IC Role / Device Role / Timing Role: TUSB8041ARGCT operates as a compound device (USB 2.0 + USB 3.1), presenting separate descriptors for legacy and high-speed peripherals to ensure backward compatibility. Use Value: Supports mixed-speed topology: SuperSpeed external HDD, high-speed webcam, and full-speed IR remote - all enumerated reliably under Linux udev rules. |
Use Scenario: A medical thin client uses USB for barcode scanner, smart card reader, and biometric sensor - requiring deterministic enumeration and fault isolation. IC Role / Device Role / Timing Role: TUSB8041ARGCT provides per-port over-current protection and individual PWRCTL control, allowing software to disable faulty ports without affecting others. Use Value: Enables hot-plug-safe operation: a shorted barcode scanner triggers only OVERCUR1z, disabling Port 1 while Ports 2–4 remain fully functional and enumerated. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB 3.1 Gen1 hub applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| USB3503A-HZC-TR | Three-port USB 3.0 hub with STT (single transaction translator); no BC1.2 ACP modes; 48-pin QFN | Limited to simpler topologies with lower port count and no automatic charging mode transition | Select when cost-sensitive designs require basic USB 3.0 expansion without advanced battery charging or MTT bandwidth isolation |
| TUSB8042ARGCT | Pin-compatible 4-port variant with identical RGC package but supports USB 3.1 Gen2 (10 Gbps) upstream; higher power consumption | Enables future-proofing for 10-Gbps host interfaces but requires revised power delivery and signal integrity validation | Select when upstream host supports USB 3.1 Gen2 and design roadmap includes bandwidth headroom beyond 5 Gbps |
Compared with USB3503A-HZC-TR, the TUSB8041ARGCT delivers superior multi-device throughput via MTT and robust BC1.2 implementation, while TUSB8042ARGCT offers Gen2 readiness at the cost of increased thermal load and supply current - making TUSB8041ARGCT optimal for thermally constrained Gen1 docking and display applications.
Availability
TUSB8041ARGCT is available at Aetrix Electronics and suitable for desktop docking stations, USB-C monitor hubs, set-top box peripheral expansion, and industrial thin client terminals requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TUSB8041ARGCT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and connectivity technologies, with leadership in USB, power management, and interface solutions.
The TUSB8041ARGCT belongs to TI's USB 3.x hub product line, designed specifically for space-constrained, thermally sensitive host-side expansion applications requiring robust charging support and mixed-speed peripheral aggregation.
FAQ
What USB speed modes does the TUSB8041ARGCT support on its upstream and downstream ports?
The TUSB8041ARGCT supports simultaneous SuperSpeed (5 Gbps) and high-speed (480 Mbps) on its upstream port. Downstream ports support SuperSpeed, high-speed, full-speed (12 Mbps), or low-speed (1.5 Mbps), with SuperSpeed disabled if upstream only supports high-speed or lower. This behavior is hardware-enforced and requires no firmware intervention - the TUSB8041ARGCT automatically negotiates link capabilities based on upstream electrical environment detection.
How does the TUSB8041ARGCT implement battery charging, and which standards does it comply with?
The TUSB8041ARGCT implements USB Battery Charging Specification 1.2 (BC1.2) with Charging Downstream Port (CDP), Dedicated Charging Port (DCP), and Divider Charging Port (ACP1/ACP2) modes. DCP mode complies with Chinese Telecommunications Industry Standard YD/T 1591-2009. CDP activates when upstream VBUS is detected and host configures port power; DCP and ACP modes activate automatically when upstream is unconnected - all determined by strap pin sampling at GRSTz de-assertion. The TUSB8041ARGCT does not require external charging ICs.
What package type and thermal requirements apply to the TUSB8041ARGCT?
The TUSB8041ARGCT is packaged in a 64-pin VQFN (RGC) with 9.00 mm × 9.00 mm body size and an exposed thermal pad (VSS). The thermal pad must be soldered to a solid PCB ground plane to achieve specified junction-to-board thermal resistance of 5.3°C/W. Without proper thermal pad connection, junction temperature may exceed 105°C under full-load conditions - violating recommended operating limits and risking reliability degradation in sustained TUSB8041ARGCT operation.
Can the TUSB8041ARGCT be configured without external EEPROM or I2C interface?
Yes, the TUSB8041ARGCT supports full pin-strapped configuration for key features including battery charging enable/disable per port (via PWRCTLx/BATENx), ganged vs. per-port power control (GANGED pin), power control polarity (PWRCTL_POL), and I2C/SMBus mode selection (SMBUSz). Default VID/PID (0x0451/0x8041) and basic hub descriptors are stored in OTP ROM, enabling immediate plug-and-play operation without external memory - though custom strings and advanced port settings require I2C EEPROM or SMBus host programming.
What is the role of the GRSTz pin, and what timing requirements apply to its assertion?
The GRSTz pin is the global power-on reset input for the TUSB8041ARGCT. It must be held low for ≥3 ms after both VDD (1.1 V) and VDD33 (3.3 V) supplies stabilize, per the power-up timing requirement td2. During GRSTz assertion, all internal registers reset to defaults and the device is nonfunctional. Strap pins (e.g., BATENx, GANGED, SMBUSz) are sampled at GRSTz de-assertion to configure operational modes - incorrect timing causes misconfiguration or failure to enumerate. The TUSB8041ARGCT does not support reset recovery without full power cycle if GRSTz timing is violated.
TUSB8041ARGCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-VFQFN Exposed Pad
- Programmable:
- Not Verified
- Protocol:
- USB
- Function:
- Hub Controller
- Interface:
- USB, GPIO, I2C, SMBus
- Standards:
- USB 3.0
- Voltage - Supply:
- 1.1V, 3.3V
- Current - Supply:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 64-VQFN (9x9)
- Grade:
- -
- Qualification:
- -
TUSB8041ARGCT FAQ
1.How can I place an order for TUSB8041ARGCT through Aetrix?
Please submit a Request for Quotation (RFQ) for TUSB8041ARGCT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TUSB8041ARGCT reliable?
The price and inventory of TUSB8041ARGCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUSB8041ARGCT is usually 5 days.
3.What payment methods are accepted for TUSB8041ARGCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUSB8041ARGCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUSB8041ARGCT?
TUSB8041ARGCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUSB8041ARGCT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TUSB8041ARGCT?
For technical support, including TUSB8041ARGCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUSB8041ARGCT requirements.
6.How does Aetrix verify that TUSB8041ARGCT is sourced from the original manufacturer or authorized distributors?
All TUSB8041ARGCT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TUSB8041ARGCT meets industry standards.
7.What is the process for return or replacement of TUSB8041ARGCT?
All TUSB8041ARGCT units undergo pre-shipment inspection (PSI). If there is an issue with TUSB8041ARGCT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TUSB8041ARGCT part is unused and in its original packaging.
Return procedure for TUSB8041ARGCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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