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Texas Instruments TUSB8041RGCT
- Part No.:
- TUSB8041RGCT
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
TUSB8041RGCT.pdf
- Description:
- IC HUB CONTROLLER USB 64VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:450
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Product details
Overview
TUSB8041RGCT from Texas Instruments is a four-port USB 3.0 hub IC supporting simultaneous SuperSpeed (5 Gbps), high-speed (480 Mbps), full-speed (12 Mbps), and low-speed (1.5 Mbps) downstream connectivity. It features Multi-Transaction Translator (MTT) architecture with four independent transaction translators, per-port/ganged power switching, and integrated battery charging support (CDP/DCP/Divider Mode). It serves as the central USB expansion controller in docking stations and embedded host systems.
For engineers reviewing the TUSB8041RGCT datasheet, TUSB8041RGCT pinout, TUSB8041RGCT application, or TUSB8041RGCT equivalent, key selection criteria include SuperSpeed upstream/downstream compatibility, MTT-based latency isolation across ports, 64-pin VQFN (9 mm × 9 mm) thermal performance, and configurable battery charging modes via pin strap or I²C/SMBus interface.
Technical Context
The TUSB8041RGCT implements a dual-mode USB hub controller with independent SuperSpeed and USB 2.0 PHY layers. Its MTT architecture enables concurrent high-bandwidth transfers across all four downstream ports without bandwidth contention-unlike single-TT hubs. The upstream port dynamically negotiates SuperSpeed, high-speed, or full-speed operation based on host capability, disabling higher-speed lanes when lower-speed environments are detected.
Power management is implemented through four dedicated PWRCTL/BATEN pins (active-high or active-low configurable via PWRCTL_POL), four OVERCURz inputs for per-port over-current detection, and flexible configuration via OTP ROM, serial EEPROM, or I²C/SMBus slave interface. It supports USB Battery Charging Specification-compliant CDP handshaking and DCP mode compliant with YD/T 1591–2009.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Hub Ports | 4 downstream + 1 upstream; enables expansion of USB peripherals without host port exhaustion |
| USB Speed Support | SuperSpeed (5 Gbps), high-speed (480 Mbps), full-speed (12 Mbps), low-speed (1.5 Mbps); maintains backward compatibility while enabling high-throughput storage and video |
| Transaction Translators | 4 independent MTTs; eliminates inter-port bandwidth contention for concurrent high-bandwidth device usage |
| Power Control | Per-port or ganged switching with dedicated PWRCTLx/BATENx pins; enables selective port power-down and battery charging enable per port |
| Battery Charging Modes | CDP (upstream-connected), DCP (upstream-unconnected, YD/T 1591–2009 compliant), and D+/D− Divider Mode; supports fast-charging smartphones and tablets without host negotiation |
| Configuration Interface | I²C/SMBus slave, OTP ROM, or serial EEPROM; allows field-updatable VID/PID, port customizations, and manufacturer strings |
| Package | 64-pin VQFN (RGC), 9.0 mm × 9.0 mm; exposes thermal pad for PCB heat dissipation and supports compact layout in space-constrained docks/monitors |
Pinout & Package
Package: 64-pin VQFN (RGC), 9.0 mm × 9.0 mm body size with exposed thermal pad (VSS-connected). Designed for thermal reliability in continuous USB 3.0 data transfer scenarios.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| USB_SSTXP_UP / USB_SSTXM_UP | SuperSpeed upstream transmitter differential pair | Carries 5-Gbps outbound data to host; requires controlled 90-Ω differential impedance routing |
| USB_SSRXP_UP / USB_SSRXM_UP | SuperSpeed upstream receiver differential pair | Accepts 5-Gbps inbound data from host; sensitive to crosstalk and stub length |
| PWRCTL1–PWRCTL4 / BATEN1–BATEN4 | Port power control / battery charging enable outputs | Drive external power switches; polarity configurable via PWRCTL_POL pin at reset |
| OVERCUR1z–OVERCUR4z | Per-port over-current detection inputs | Active-low signals indicating fault condition; used to disable affected port power without affecting others |
| SCL/SMBCLK & SDA/SMBDAT | I²C/SMBus interface | Supports runtime configuration and firmware updates via host or external programmer; SMBUSz pin selects protocol mode |
| GRSTz | Global reset input | Asynchronous active-low reset; must be held low ≥3 ms after both VDD and VDD33 stabilize |
Key Features
| Feature | Design Value |
|---|---|
| Multi-Transaction Translator (MTT) | Four independent TTs eliminate bandwidth sharing between downstream ports-critical for simultaneous SSD, webcam, and audio device operation |
| Configurable battery charging | Hardware-supported CDP/DCP/Divider Mode enables plug-and-play fast charging without host driver involvement or enumeration delay |
| Flexible power management | Per-port or ganged power control with dedicated enable and over-current pins allows robust thermal and fault management in multi-peripheral systems |
| Single-clock architecture | 24-MHz crystal or oscillator input drives both USB 2.0 and USB 3.0 PHYs-reduces BOM count and clock tree complexity |
| Field-programmable identity | VIN/PID, port behavior, and string descriptors programmable via I²C/SMBus or EEPROM-enables OEM branding and custom port mapping |
Applications
| USB Docking Station | Monitor with USB Hub |
|---|---|
Use Scenario: Desktop replacement dock connecting laptop to multiple peripherals including SSD, webcam, keyboard, and Ethernet adapter. IC Role / Device Role / Timing Role: Central USB 3.0 hub managing concurrent SuperSpeed (SSD), high-speed (webcam), and full-speed (keyboard/mouse) traffic with MTT isolation. Use Value: Eliminates host port congestion while maintaining deterministic latency for time-sensitive peripherals via independent transaction translators. |
Use Scenario: Smart monitor with built-in USB hub providing downstream ports for keyboard, mouse, and flash drive alongside display connection. IC Role / Device Role / Timing Role: Embedded USB 3.0 hub enabling peripheral expansion without requiring additional host controller resources. Use Value: Reduces system-level component count and PCB area by integrating full-speed and SuperSpeed support in one 9-mm QFN package with thermal pad. |
| Set-Top Box Expansion | Industrial Embedded Host |
Use Scenario: Media streaming box adding USB 3.0 HDD support, IR remote dongle, and Bluetooth adapter via compact hub. IC Role / Device Role / Timing Role: USB 3.0 hub enabling high-bandwidth storage access while maintaining low-latency HID communication. Use Value: Supports simultaneous 5-Gbps HDD streaming and sub-millisecond HID response using MTT architecture and configurable power sequencing. |
Use Scenario: Factory automation controller requiring reliable USB peripheral attachment (barcode scanner, printer, flash storage) in temperature-varying environments. IC Role / Device Role / Timing Role: Industrial-grade USB hub (TUSB8041RGCT commercial variant rated 0°C–70°C) with robust over-current protection and reset timing compliance. Use Value: Ensures stable enumeration and sustained operation under voltage ramp variations (tVDD_RAMP: 0.2–100 ms) and ESD stress (±2000-V HBM). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB 3.0 hub applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| USB3503-AEZG | 3-port USB 3.0 hub with integrated USB 2.0 PHY; no MTT-single TT shared across all ports | Limited concurrent high-bandwidth device support; suitable for cost-sensitive, low-port-count applications | Select when port count and MTT isolation are secondary to BOM reduction and smaller 40-pin QFN footprint |
| TUSB8042IRGCT | Pin-compatible industrial-grade variant (-40°C to 85°C); identical electrical specs and pinout | Extended temperature operation required for automotive or factory-floor deployments | Select when ambient operating temperature exceeds 70°C; same layout, firmware, and configuration interface |
Compared with USB3503-AEZG, TUSB8041RGCT delivers superior multi-device throughput via MTT and broader battery charging compliance; compared with TUSB8042IRGCT, it trades extended temperature range for lower cost in commercial environments-no PCB or firmware changes needed when upgrading between the two.
Availability
TUSB8041RGCT is available at Aetrix Electronics and suitable for USB docking stations, monitor-integrated hubs, and set-top box peripheral expansion requiring stable component supply, long-term lifecycle support, and verified thermal performance in 9-mm QFN packages.
Supply support for TUSB8041RGCT 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 leader specializing in analog, embedded processing, and connectivity solutions, with decades of USB protocol expertise and broad portfolio of certified USB transceivers, hubs, and controllers.
The TUSB8041 product line delivers fully compliant, production-ready USB 3.0 hub ICs optimized for compact, thermally constrained consumer and industrial host systems requiring robust power management and battery charging support.
FAQ
What USB speed modes does the TUSB8041RGCT support on its downstream ports?
The TUSB8041RGCT supports SuperSpeed (5 Gbps), high-speed (480 Mbps), full-speed (12 Mbps), and low-speed (1.5 Mbps) on all four downstream ports. Upstream speed is negotiated dynamically: if the host only supports high-speed, SuperSpeed is disabled downstream; if only full-speed is supported upstream, both SuperSpeed and high-speed are disabled downstream. This ensures strict USB specification compliance without manual configuration.
Does the TUSB8041RGCT require an external crystal or can it use an oscillator?
The TUSB8041RGCT accepts either a 24-MHz crystal (connected between XI and XO pins with 1-MΩ feedback resistor) or a 24-MHz CMOS oscillator (driving XI while leaving XO unconnected). Both options satisfy the timing requirements for simultaneous USB 2.0 and USB 3.0 PHY operation, eliminating need for multiple clock sources.
How does the TUSB8041RGCT implement battery charging for connected devices?
The TUSB8041RGCT implements three battery charging modes: CDP (Battery Charging Downstream Port) when upstream is connected, DCP (Dedicated Charging Port) when upstream is unconnected and compliant with YD/T 1591–2009, and D+/D− Divider Mode for legacy BC 1.1 devices. Configuration is set via PWRCTLx/BATENx pin strapping or I²C register writes-no host software intervention required.
Is the TUSB8041RGCT pin-compatible with any industrial-temperature variants?
Yes-the TUSB8041RGCT is pin-compatible with the TUSB8042IRGCT, which operates from –40°C to 85°C and shares identical pinout, electrical specifications, and configuration interface. No PCB redesign or firmware update is needed when migrating to the industrial variant for harsher thermal environments.
What configuration interfaces does the TUSB8041RGCT support for custom VID/PID and port settings?
The TUSB8041RGCT supports three configuration methods: one-time programmable (OTP) ROM for permanent settings, serial EEPROM for field-updatable parameters, and real-time I²C/SMBus slave interface (SCL/SDA pins) for dynamic reconfiguration. VID/PID, port power behavior, battery charging enable, and manufacturer strings are all configurable-though OTP ROM does not support string storage.
TUSB8041RGCT 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:
- -
TUSB8041RGCT FAQ
1.How can I place an order for TUSB8041RGCT through Aetrix?
Please submit a Request for Quotation (RFQ) for TUSB8041RGCT 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 TUSB8041RGCT reliable?
The price and inventory of TUSB8041RGCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUSB8041RGCT is usually 5 days.
3.What payment methods are accepted for TUSB8041RGCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUSB8041RGCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUSB8041RGCT?
TUSB8041RGCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUSB8041RGCT 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 TUSB8041RGCT?
For technical support, including TUSB8041RGCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUSB8041RGCT requirements.
6.How does Aetrix verify that TUSB8041RGCT is sourced from the original manufacturer or authorized distributors?
All TUSB8041RGCT 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 TUSB8041RGCT meets industry standards.
7.What is the process for return or replacement of TUSB8041RGCT?
All TUSB8041RGCT units undergo pre-shipment inspection (PSI). If there is an issue with TUSB8041RGCT, 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 TUSB8041RGCT part is unused and in its original packaging.
Return procedure for TUSB8041RGCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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