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Texas Instruments TUSB8044RGCT
- Part No.:
- TUSB8044RGCT
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
TUSB8044RGCT.pdf
- Description:
- IC HUB CONTROLLER USB 3.1 64VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,912
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Product details
Overview
TUSB8044 from Texas Instruments is a four-port USB 3.1 Gen1 hub IC with integrated USB 2.0 Billboard device, supporting simultaneous SuperSpeed (5 Gbps) and high-speed (480 Mbps) upstream connectivity, four configurable downstream ports, and battery charging modes including DCP, CDP, and Galaxy Charging per port. It operates across 0°C to 70°C and targets docked computing systems requiring robust USB topology expansion.
For engineers reviewing the TUSB8044 datasheet, TUSB8044 pinout, TUSB8044 application, or TUSB8044 equivalent, key selection considerations include per-port/ganged power switching, I2C/SMBus configurability for VID/PID and port behavior, USB Billboard compliance for Alternate Mode status reporting, and support for on-board EEPROM programming via USB HID-to-I2C interface.
Technical Context
The TUSB8044 implements a Multi-Transaction Translator (MTT) architecture with four independent transaction translators and two asynchronous endpoint buffers per translator, enabling concurrent high-bandwidth USB 2.0 device handling. Its upstream port supports dual-mode operation: SuperSpeed + high-speed when connected to a USB 3.1 host, or high-speed-only when upstream link lacks SuperSpeed capability.
Downstream ports dynamically adapt speed support based on upstream connection: full SuperSpeed/high-speed/full-speed/low-speed when upstream is USB 3.1 Gen1; high-speed/full-speed/low-speed only when upstream is USB 2.0; and low-speed only when upstream is USB 1.1. The integrated Billboard device resides on the highest-numbered downstream port and reports Alternate Mode status per USB Device Class Definition v1.1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Hub Type | Four-port USB 3.1 Gen1 (5 Gbps) hub with USB 2.0 MTT architecture and integrated USB 2.0 Billboard device |
| Upstream Interface | Simultaneous SuperSpeed differential pair (SSTX+/SSTX−/SSRX+/SSRX−) and high-speed differential pair (DP/DM), auto-negotiating mode based on host capability |
| Downstream Ports | Four configurable ports supporting SuperSpeed, high-speed, full-speed, or low-speed; plus internal USB 2.0-only port for HID-to-I2C control |
| Power Management | Per-port or ganged power switching with dedicated PWRCTL/BATEN and OVERCURz pins per port; supports DCP, CDP, ACP1–ACP3, and Galaxy Charging |
| Configuration Interface | I2C/SMBus slave interface (SCL/SDA/SMBUSz) or OTP ROM for VID/PID, port customizations, and string descriptors; supports 100 kHz/400 kHz I2C clock |
| Package & Power | 64-pin VQFN (RGC), 9.0 mm × 9.0 mm; dual supply: 1.1 V (VDD) and 3.3 V (VDD33); thermal resistance RθJA = 26°C/W |
| Operating Range | Commercial temperature range: 0°C to 70°C; junction temperature up to 105°C; ESD rating: ±2000 V HBM, ±500 V CDM |
Pinout & Package
64-pin VQFN package (RGC), 9.0 mm × 9.0 mm body size, with exposed thermal pad (VSS) requiring PCB ground connection. Pin functions validated per TI SLLSEW5 datasheet Rev. April 2017.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| USB_SSTXP_UP / USB_SSTXM_UP USB_SSRXP_UP / USB_SSRXM_UP USB_DP_UP / USB_DM_UP | Upstream SuperSpeed & high-speed transceivers | Dedicated differential pairs for 5 Gbps and 480 Mbps upstream communication; SSTX/SSRX require AC coupling; DP/DM support chirp negotiation |
| USB_SSTXP_DN1–DN4 / USB_SSTXM_DN1–DN4 USB_SSRXP_DN1–DN4 / USB_SSRXM_DN1–DN4 USB_DP_DN1–DN4 / USB_DM_DN1–DN4 | Downstream port transceivers | Four independent sets of SuperSpeed and high-speed I/O; each port supports speed fallback based on upstream capability and cable detection |
| PWRCTL1–PWRCTL4 / BATEN1–BATEN4 OVERCUR1z–OVERCUR4z | Port power control & over-current monitoring | Configurable active-high/active-low polarity (via PWRCTL_POL); enables per-port power gating and battery charging handshaking (DCP/CDP/Galaxy) |
| SCL/SMBCLK / SDA/SMBDAT / SMBUSz/SS_SUSPEND | I2C/SMBus configuration interface | Selects I2C (SMBUSz=1) or SMBus (SMBUSz=0) mode; allows runtime reconfiguration of VID/PID, port settings, and Billboard descriptors |
| BBEN/GANGED/HS_UP BBbmConfigured0 / BBbmConfigured1 | Billboard enable & configuration status | Hardware-strapped or register-controlled Billboard device enable; bmConfigured bits define supported Alternate Modes reported to host |
Key Features
| Feature | Design Value |
|---|---|
| Four-port USB 3.1 Gen1 Hub with MTT | Enables concurrent high-bandwidth USB 2.0 device connections without bandwidth contention across ports |
| Integrated USB 2.0 Billboard Device | Reports Alternate Mode status (e.g., DisplayPort Alt Mode) to host via standardized descriptor, eliminating need for external billboard IC |
| Per-Port Battery Charging Support | Hardware-configurable DCP/CDP/Galaxy/YD/T 1591-2009 charging modes per downstream port, with automatic mode transition when upstream is unconnected |
| HID-to-I2C Bridge | Internal USB 2.0 endpoint provides I2C master access at 100/400 kHz for EEPROM programming and peripheral control without host CPU intervention |
| Flexible Configuration Options | OTP ROM, serial EEPROM, or real-time I2C/SMBus interface for custom VID/PID, port enable/disable, manufacturer/product strings, and UUID assignment |
Applications
| Computer Docking Stations | USB-C Monitor Hubs |
|---|---|
Use Scenario: Desktop docking station with USB-C upstream input, providing four downstream USB-A ports, video output, and power delivery negotiation. IC Role / Device Role / Timing Role: TUSB8044 acts as the primary USB hub controller, managing data routing between host and peripherals while hosting the Billboard device to report DisplayPort Alt Mode status to the OS. Use Value: Eliminates discrete billboard IC and reduces BOM count; per-port power switching isolates faults during hot-plug events without disrupting other ports. | Use Scenario: Smart monitor with embedded USB hub functionality, accepting USB-C input and exposing multiple USB-A ports alongside HDMI/DP outputs. IC Role / Device Role / Timing Role: TUSB8044 serves as the USB topology manager, enabling simultaneous SuperSpeed storage access and high-speed HID device connectivity while signaling Alternate Mode capability via Billboard. Use Value: Supports seamless plug-and-play with Windows/macOS USB-C docks; built-in Galaxy Charging ensures compatibility with legacy Android devices. |
| Set-Top Box Expansion Hubs | Industrial Embedded USB Hosts |
Use Scenario: Media streaming box with limited USB ports, extended via external hub supporting external HDDs, keyboards, and firmware update dongles. IC Role / Device Role / Timing Role: TUSB8044 functions as a robust, temperature-stable hub controller with ganged power management for cost-sensitive consumer enclosures. Use Value: Automatic DCP mode activation when upstream is disconnected allows direct charging of mobile devices without host involvement. | Use Scenario: Factory automation controller requiring reliable USB peripheral attachment (barcode scanners, PLC interfaces, flash drives) in thermally constrained enclosures. IC Role / Device Role / Timing Role: TUSB8044 provides deterministic USB 2.0/3.1 connectivity with programmable VID/PID for OEM branding and EEPROM-based field-upgradable configuration. Use Value: I2C-based runtime reconfiguration enables firmware updates to port behavior without hardware change or device reset. |
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 |
|---|---|---|---|
| USB3343-AEZG | Three-port USB 3.0 hub with integrated USB 2.0 PHY; no Billboard support; requires external EEPROM for customization | Lacks USB Billboard and HID-to-I2C bridge; supports only basic charging (BC 1.2), not Galaxy or YD/T 1591-2009 | Choose when Billboard functionality is unnecessary and cost sensitivity outweighs configurability needs |
| TUSB8041RGCT | Single-chip four-port USB 3.1 Gen1 hub with identical pinout and feature set but excludes internal USB 2.0-only port for HID-to-I2C | No dedicated I2C master interface; external microcontroller required for EEPROM programming or peripheral control | Choose when HID-to-I2C bridge is unused and board space allows separate I2C controller |
Compared with USB3343-AEZG and TUSB8041RGCT, the TUSB8044 uniquely integrates both Billboard functionality and an HID-to-I2C bridge in the same 64-pin package-enabling single-chip USB-C alternate mode reporting and EEPROM/peripheral control without additional silicon, reducing system complexity and bill-of-materials count.
Availability
TUSB8044 is available at Aetrix Electronics and suitable for computer docking stations, USB-C monitor hubs, set-top box expansion modules, and industrial embedded USB hosts requiring stable component supply, long-term lifecycle support, and consistent electrical performance across commercial temperature ranges.
Supply support for TUSB8044 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets.
The TUSB8044 belongs to TI's USB Hub IC product line, designed specifically for compact, feature-rich USB-C docking and peripheral expansion applications requiring integrated Billboard support, flexible power management, and field-programmable configuration.
FAQ
What USB speed modes does the TUSB8044 support on its upstream and downstream ports?
The TUSB8044 supports SuperSpeed (5 Gbps) and high-speed (480 Mbps) simultaneously on its upstream port. Downstream ports support SuperSpeed, high-speed, full-speed (12 Mbps), or low-speed (1.5 Mbps), with speed capability dynamically reduced based on upstream connection: SuperSpeed disabled if upstream is USB 2.0-only; both SuperSpeed and high-speed disabled if upstream is USB 1.1-only. This behavior is defined in the TUSB8044 datasheet Section 5 and confirmed by functional block diagram analysis.
Does the TUSB8044 require an external crystal or oscillator?
Yes, the TUSB8044 requires a 24-MHz clock source connected to XI/XO pins. It accepts either a 24-MHz crystal (with 1-MΩ feedback resistor between XI and XO) or a 24-MHz CMOS oscillator driving the XI pin directly. XO may be left unconnected when using an external oscillator. This requirement is specified in Section 6 (Pin Configuration) and Section 7.6 (Timing Requirements) of the TUSB8044 datasheet.
How does the TUSB8044 implement USB Billboard functionality?
The TUSB8044 integrates a compliant USB 2.0 Billboard device attached to its highest-numbered downstream port (Port 4). It reports Alternate Mode status per USB Device Class Definition v1.1 using hardware-strapped or register-configured bmConfigured bits (via BBbmConfigured0/BBbmConfigured1 pins). Billboard enable is controlled by BBEN/GANGED/HS_UP pin in I2C mode or via register in SMBus mode-no external IC is needed. This is detailed in Sections 1 (Features), 5 (Description Continued), and 6 (Pin Functions).
Can the TUSB8044 be configured without external EEPROM or OTP ROM?
Yes, the TUSB8044 supports full runtime configuration via its I2C/SMBus slave interface (SCL/SDA/SMBUSz pins), allowing VID/PID, port settings, and Billboard descriptors to be written over I2C without external non-volatile memory. Default factory settings apply if no configuration medium is present. OTP ROM and serial EEPROM are optional alternatives-not mandatory-for persistent storage. This is confirmed in Section 1 (Features) and Section 6 (Pin Functions).
What battery charging standards does the TUSB8044 support per downstream port?
The TUSB8044 supports Dedicated Charging Port (DCP) mode compliant with Chinese Telecommunications Industry Standard YD/T 1591-2009, Charging Downstream Port (CDP) mode per USB Battery Charging Specification 1.2, Galaxy Charging for Samsung devices, and Divider Mode (ACPx) charging. Automatic mode transitions between ACP3 → ACP2 → ACP1 → DCP when upstream is unconnected. These capabilities are explicitly listed in Section 1 (Features) and Section 5 (Description Continued) of the TUSB8044 datasheet.
TUSB8044RGCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-VFQFN Exposed Pad
- Programmable:
- Not Verified
- Protocol:
- USB
- Function:
- Hub Controller
- Interface:
- I2C
- Standards:
- USB 3.1
- Voltage - Supply:
- 1.1V, 3.3V
- Current - Supply:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 64-VQFN (9x9)
- Grade:
- -
- Qualification:
- -
TUSB8044RGCT FAQ
1.How can I place an order for TUSB8044RGCT through Aetrix?
Please submit a Request for Quotation (RFQ) for TUSB8044RGCT 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 TUSB8044RGCT reliable?
The price and inventory of TUSB8044RGCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUSB8044RGCT is usually 5 days.
3.What payment methods are accepted for TUSB8044RGCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUSB8044RGCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUSB8044RGCT?
TUSB8044RGCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUSB8044RGCT 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 TUSB8044RGCT?
For technical support, including TUSB8044RGCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUSB8044RGCT requirements.
6.How does Aetrix verify that TUSB8044RGCT is sourced from the original manufacturer or authorized distributors?
All TUSB8044RGCT 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 TUSB8044RGCT meets industry standards.
7.What is the process for return or replacement of TUSB8044RGCT?
All TUSB8044RGCT units undergo pre-shipment inspection (PSI). If there is an issue with TUSB8044RGCT, 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 TUSB8044RGCT part is unused and in its original packaging.
Return procedure for TUSB8044RGCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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