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Texas Instruments TUSB8043RGCR
- Part No.:
- TUSB8043RGCR
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
TUSB8043RGCR.pdf
- Description:
- IC USB HUB CONTROLLER 64VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,263
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Product details
Overview
TUSB8043 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 four configurable downstream ports plus an internal USB 2.0-only port for HID-to-I2C bridging. It integrates Multi-Transaction Translator (MTT) architecture, battery charging support per port (CDP/DCP/ACP), and 1.1-V/3.3-V dual-supply operation - deployed in docking stations, monitors, and set-top boxes requiring robust USB expansion with embedded I2C control.
For engineers reviewing the TUSB8043 datasheet, TUSB8043 pinout, TUSB8043 application, or TUSB8043 equivalent, key selection criteria include its 64-pin VQFN (RGC) package, per-port power switching with over-current detection, USB 2.0 HID-to-I2C bridge capability, 24-MHz single-clock input requirement, and compliance with YD/T 1591-2009 for DCP mode.
Technical Context
The TUSB8043 implements a full USB 3.1 Gen1 hub controller with MTT architecture-four independent transaction translators enabling concurrent high-bandwidth transfers across downstream ports. Its upstream interface supports SuperSpeed + high-speed fallback, while downstream ports dynamically adapt speed (SuperSpeed, high-speed, full-speed, low-speed) based on upstream link capability.
It embeds an I2C master supporting clock stretching and 100/400 kHz operation, accessible via dedicated HID-to-I2C endpoint, enabling host-side EEPROM programming and real-time configuration of VID/PID, port settings, and strings. Power management is implemented through eight dedicated pins (PWRCTLx/BATENx and OVERCURx) supporting both ganged and individual port control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Standard | Complies with USB 3.1 Gen1 (5 Gbps) and USB 2.0 specifications - enables backward-compatible hub operation with full SuperSpeed bandwidth when upstream supports it. |
| Port Count | Four external downstream USB ports + one internal USB 2.0-only port for HID-to-I2C - provides dedicated low-footprint I2C control path without consuming external USB endpoints. |
| Supply Voltages | 1.1 V (VDD) and 3.3 V (VDD33) rails - requires strict power sequencing (VDD33 stable ≥3 ms before GRSTz de-assertion) to ensure register initialization integrity. |
| Battery Charging Modes | Supports CDP (upstream connected), DCP (upstream unconnected, compliant with YD/T 1591-2009), and ACP1–ACP3 divider modes - enables direct charging of smartphones/tablets without host negotiation. |
| Configuration Interface | I2C/SMBus slave or OTP ROM/EEPROM - allows field-updatable VID/PID, port customizations, and manufacturer/product strings (via EEPROM only). |
| Thermal Resistance | RθJA = 26 °C/W (64-pin VQFN) - mandates minimum 4×4 thermal pad soldering and PCB copper pour for sustained 4-port SuperSpeed operation at 70°C ambient. |
| ESD Rating | ±2000 V HBM, ±500 V CDM - meets industrial handling requirements without additional protection circuitry on USB lines. |
Pinout & Package
Package: 64-pin VQFN (RGC), 9.0 mm × 9.0 mm, exposed thermal pad (VSS) requiring solid ground connection for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| USB_SSTXP_UP / USB_SSTXM_UP | SuperSpeed upstream transmitter differential pair | Carries 5-Gbps differential signaling to host controller; requires controlled 90-Ω impedance routing and length matching ≤100 mil. |
| USB_SSRXP_UP / USB_SSRXM_UP | SuperSpeed upstream receiver differential pair | Receives 5-Gbps upstream data; must be isolated from noise sources and routed with same constraints as transmit pair. |
| PWRCTL1–PWRCTL4 / BATEN1–BATEN4 | Per-port power switch control / battery enable | Active-high or active-low (configurable via PWRCTL_POL) signals driving external load switches; sampled at reset to configure charging support per port. |
| OVERCUR1z–OVERCUR4z | Per-port over-current detection inputs | Active-low open-drain inputs monitoring external current-limit ICs; assertion disables respective port power and triggers hub status reporting. |
| SCL/SMBCLK & SDA/SMBDAT | I2C/SMBus bidirectional data/clock | Configurable via SMBUSz pin: supports EEPROM programming (I2C mode) or host-side configuration (SMBus mode); pull-ups required externally. |
| GRSTz | Global reset input | Active-low asynchronous reset; must be held low ≥1 µs after power stabilization and de-asserted cleanly to initialize all registers and PHYs. |
Key Features
| Feature | Design Value |
|---|---|
| Multi-Transaction Translator (MTT) | Four independent TTs eliminate bandwidth contention between downstream devices - enables simultaneous high-throughput storage and low-latency HID traffic without arbitration delay. |
| HID-to-I2C Bridge | Dedicated internal USB 2.0 port operates at speed matching upstream (HS/FS) and exposes I2C master via standard HID report descriptors - eliminates need for separate microcontroller in USB-peripheral management. |
| Flexible Power Management | Ganged or per-port power switching with configurable polarity (PWRCTL_POL) and over-current response - supports both cost-sensitive (ganged) and safety-critical (individual) system architectures. |
| USB Battery Charging Compliance | Fully implements USB BC 1.2, Galaxy Charging, and YD/T 1591-2009 DCP - enables certified wall-charger emulation without firmware modification or external charging ICs. |
| Single-Crystal Operation | 24-MHz crystal (XI/XO) or oscillator input - eliminates need for multiple clock sources; internal PLL generates all required USB timing domains (125 MHz for SS, 48 MHz for HS/FS). |
Applications
| Computer Docking Stations | Smart Monitors |
|---|---|
Use Scenario: Expands a laptop's single USB-C port into four downstream USB-A ports, HDMI, Ethernet, and audio while providing bus-powered peripherals with fast charging. IC Role / Device Role / Timing Role: Central USB 3.1 Gen1 hub managing SuperSpeed data lanes to SSDs and high-speed video adapters, while coordinating battery charging handshakes for connected phones and tablets. Use Value: Enables single-cable docking with full 5 Gbps bandwidth allocation across ports and native DCP/Galaxy charging - eliminating reliance on proprietary chargers or secondary power bricks. | Use Scenario: Integrates USB hub functionality into monitor PCB to provide peripheral connectivity (keyboard/mouse/webcam) and charge mobile devices via front-panel USB ports. IC Role / Device Role / Timing Role: Acts as compound USB device: upstream presents as USB 3.1 hub + HID class; downstream ports serve peripherals and expose I2C interface for on-board display control (EDID, brightness, contrast). Use Value: Reduces BOM count by combining hub, charger, and display controller interface - leverages internal HID-to-I2C to avoid adding MCU for monitor feature management. |
| Set-Top Box Expansion | Industrial Human-Machine Interface (HMI) |
Use Scenario: Adds USB host capability to media streamers for external storage (USB HDD), wireless dongles (Wi-Fi/BT), and IR blasters - all powered and managed from single board. IC Role / Device Role / Timing Role: USB 3.1 Gen1 hub operating in USB 2.0 fallback mode (due to SoC limitations), delivering reliable high-speed data transfer while maintaining CDP/DCP charging for remote controls and accessories. Use Value: Delivers deterministic latency for real-time IR transmission and guaranteed 480 Mbps throughput to storage - critical for seamless 4K video buffering and playback. | Use Scenario: Embedded in factory-floor HMIs to connect barcode scanners, RFID readers, and USB flash drives while enabling firmware updates via USB mass storage and device configuration via I2C-connected sensors/actuators. IC Role / Device Role / Timing Role: Provides isolated USB 2.0 downstream port for HID-to-I2C bridge - allowing host processor to reconfigure sensor calibration or update display parameters without USB enumeration delays. Use Value: Enables zero-interrupt, hot-plug-safe I2C access during runtime - critical for maintenance-free operation in 24/7 industrial environments where USB resets would disrupt process control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB hub applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TUSB8041RGC | Two-port USB 3.1 Gen1 hub in same 64-pin RGC package; identical feature set except reduced port count and no internal HID-to-I2C port. | Targeted at space-constrained designs needing only two downstream ports and no embedded I2C control path. | Select TUSB8041RGC when board area or cost optimization outweighs need for four ports or HID-to-I2C functionality. |
| USB2514B-AEZG | Four-port USB 2.0 hub only (no SuperSpeed support); supports MTT and battery charging (BC 1.2), but lacks USB 3.x PHY, SS_SUSPEND, or HID-to-I2C bridge. | Suitable for legacy systems or cost-sensitive applications where 480 Mbps bandwidth suffices and SuperSpeed is unnecessary. | Choose USB2514B-AEZG when SuperSpeed is not required and lower BOM cost or simpler layout (no SS routing) is prioritized. |
Compared with TUSB8043, the TUSB8041RGC offers identical architecture and pin compatibility but halves port count and removes HID-to-I2C - making it ideal for compact designs. The USB2514B-AEZG provides USB 2.0-only functionality at lower cost and complexity, but cannot support SuperSpeed data paths or embedded I2C control, limiting upgradeability in modern USB-C ecosystems.
Availability
TUSB8043 is available at Aetrix Electronics and suitable for computer docking stations, smart monitors, and set-top boxes requiring stable component supply, long-term lifecycle support, and full USB 3.1 Gen1 compliance with integrated battery charging.
Supply support for TUSB8043 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 automotive/industrial qualification.
The TUSB8043 belongs to TI's USB Hub family designed specifically for high-reliability, feature-rich USB expansion in commercial and industrial systems - emphasizing seamless interoperability, battery charging compliance, and embedded system integration via HID-to-I2C.
FAQ
What USB standards does the TUSB8043 support?
The TUSB8043 supports USB 3.1 Gen1 (5 Gbps SuperSpeed) and full USB 2.0 compliance (high-speed 480 Mbps, full-speed 12 Mbps, low-speed 1.5 Mbps). It operates as a compound device when needed and dynamically disables SuperSpeed on downstream ports if the upstream connection lacks SS capability - ensuring robust fallback behavior without host intervention. This dual-standard support is integral to the TUSB8043's role in mixed-speed USB ecosystems.
Does the TUSB8043 require external crystals or oscillators?
Yes, the TUSB8043 requires a 24-MHz clock source connected to XI/XO pins - either a parallel-resonant crystal (with 1-MΩ feedback resistor) or a CMOS oscillator. No internal RC oscillator is provided; this external reference is used by on-chip PLLs to generate all USB timing domains (125 MHz for SuperSpeed, 48 MHz for USB 2.0). Stable 24-MHz input is mandatory for TUSB8043 functional operation and USB certification compliance.
How does the TUSB8043 implement battery charging support?
The TUSB8043 implements battery charging per USB Battery Charging Specification 1.2, supporting CDP (when upstream connected), DCP (when upstream unconnected, compliant with YD/T 1591-2009), and ACP1–ACP3 divider modes. Configuration is controlled via strap pins (BATENx, AUTOENz, FULLPWRMGMTz) sampled at reset, and charging handshakes occur autonomously in hardware - no host driver involvement required. This built-in logic is a core feature of the TUSB8043 design.
Can the TUSB8043 be configured without external EEPROM or OTP?
Yes, the TUSB8043 supports pin-strapped configuration for key features including battery charging mode (BATENx), power management type (GANGED/FULLPWRMGMTz), and I2C/SMBus interface selection (SMBUSz). While OTP ROM and external I2C EEPROM enable advanced customization (VID/PID, strings), basic operation - including USB enumeration and port power control - functions immediately after reset using only strap pins. This makes TUSB8043 deployable without external non-volatile memory.
What is the purpose of the internal HID-to-I2C port in the TUSB8043?
The internal HID-to-I2C port in the TUSB8043 provides a dedicated USB 2.0 endpoint that exposes an I2C master interface via standard HID report descriptors - enabling host software to read/write I2C devices (e.g., EEPROM, sensors, display controllers) without custom drivers. Its speed matches the upstream port (HS/FS), and it supports clock stretching and 100/400 kHz modes. This feature eliminates the need for a separate MCU in many TUSB8043-based designs.
TUSB8043RGCR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-VFQFN Exposed Pad
- Programmable:
- Not Verified
- Protocol:
- USB
- Function:
- Hub Controller
- Interface:
- USB
- 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:
- -
TUSB8043RGCR FAQ
1.How can I place an order for TUSB8043RGCR through Aetrix?
Please submit a Request for Quotation (RFQ) for TUSB8043RGCR 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 TUSB8043RGCR reliable?
The price and inventory of TUSB8043RGCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUSB8043RGCR is usually 5 days.
3.What payment methods are accepted for TUSB8043RGCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUSB8043RGCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUSB8043RGCR?
TUSB8043RGCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUSB8043RGCR 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 TUSB8043RGCR?
For technical support, including TUSB8043RGCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUSB8043RGCR requirements.
6.How does Aetrix verify that TUSB8043RGCR is sourced from the original manufacturer or authorized distributors?
All TUSB8043RGCR 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 TUSB8043RGCR meets industry standards.
7.What is the process for return or replacement of TUSB8043RGCR?
All TUSB8043RGCR units undergo pre-shipment inspection (PSI). If there is an issue with TUSB8043RGCR, 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 TUSB8043RGCR part is unused and in its original packaging.
Return procedure for TUSB8043RGCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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