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Texas Instruments TUSB8043RGCT
- Part No.:
- TUSB8043RGCT
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
TUSB8043RGCT.pdf
- Description:
- IC USB HUB CONTROLLER 64VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,104
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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, per-port/ganged power switching, and battery charging support compliant with USB Battery Charging 1.2, Galaxy Charging, and YD/T 1591-2009 - deployed in docking stations and monitor hubs.
For engineers reviewing the TUSB8043 datasheet, TUSB8043 pinout, TUSB8043 application, or TUSB8043 equivalent, key selection criteria include SuperSpeed/HS dual-mode upstream operation, MTT-based USB 2.0 transaction handling, integrated I2C master for EEPROM configuration and HID-to-I2C control, 64-pin VQFN package thermal performance, and battery charging mode flexibility across unconnected/upstream-connected states.
Technical Context
The TUSB8043 implements a dual-lane USB 3.1 Gen1 hub architecture with independent SuperSpeed and USB 2.0 data paths: upstream supports concurrent SS+HS signaling, while downstream ports dynamically disable SuperSpeed when upstream connects only to HS/FS/LS hosts. Its MTT design allocates four dedicated transaction translators and two asynchronous endpoint buffers per translator to prevent bandwidth contention among USB 2.0 devices.
Power management is implemented via eight configurable control pins (PWRCTLx/BATENx and OVERCURx) supporting individual or ganged downstream port switching, with automatic DCP/ACP/Galaxy charging mode selection based on upstream connection status and strap pin configuration. The integrated I2C master operates at 100 kHz/400 kHz, supports clock stretching, and enables in-system EEPROM programming through the USB 2.0 upstream interface.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Standard | USB 3.1 Gen1 (5 Gbps) + USB 2.0 HS/FS/LS - enables backward-compatible multi-speed hub operation with dynamic SS enable/disable based on upstream link capability. |
| Port Count | Four external downstream ports + one internal USB 2.0-only port for HID-to-I2C - provides dedicated low-footprint I2C control channel matching upstream speed (HS/FS). |
| Transaction Architecture | Multi-Transaction Translator (MTT) with four TTs and two async endpoint buffers per TT - eliminates USB 2.0 bandwidth bottlenecks across multiple attached peripherals. |
| Battery Charging Modes | CDP (upstream connected), DCP (upstream unconnected), ACP1–ACP3, Galaxy, and YD/T 1591-2009 compliance - enables plug-and-play charging without host negotiation in embedded dock applications. |
| Configuration Interface | I2C/SMBus slave + OTP ROM + serial EEPROM - supports field-updatable VID/PID, port customizations, and manufacturer/product strings (via EEPROM only). |
| Supply Voltages | VDD = 1.1 V ±10%, VDD33 = 3.3 V ±10% - dual-rail operation with defined power-up sequencing (VDD33 stable ≥3 ms before GRSTz de-assertion). |
| Package | 64-pin VQFN (RGC), 9.0 mm × 9.0 mm, exposed thermal pad - optimized for thermal dissipation (RθJB = 5.3°C/W) in space-constrained dock/monitor PCBs. |
Pinout & Package
64-pin VQFN (RGC) package with 0.5-mm pitch and exposed thermal pad (VSS) requiring PCB solder connection for thermal and electrical grounding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| USB_SSTXP_UP / USB_SSTXM_UP | SuperSpeed upstream transmitter differential pair | Drives 5-Gbps differential signal to host controller; requires controlled 90-Ω impedance routing. |
| USB_SSRXP_UP / USB_SSRXM_UP | SuperSpeed upstream receiver differential pair | Receives 5-Gbps differential signal from host; includes integrated termination and equalization. |
| USB_DP_UP / USB_DM_UP | USB 2.0 upstream transceiver differential pair | Handles HS/FS/LS signaling up to 480 Mbps; shares physical layer with SS path but operates independently. |
| PWRCTL1–PWRCTL4 / BATEN1–BATEN4 | Downstream port power control / battery enable | Configurable active-high/low outputs controlling external power switches; sampled at reset to set per-port charging support. |
| OVERCUR1z–OVERCUR4z | Downstream over-current detection inputs | Active-low interrupt signals indicating fault condition; used for automatic port power shutdown in individual or ganged modes. |
| SCL / SDA / SMBUSz | I2C/SMBus configuration interface | Enables read/write access to internal registers and external EEPROM; supports clock stretching and 100/400-kHz operation. |
Key Features
| Feature | Design Value |
|---|---|
| Four-port USB 3.1 Gen1 hub with MTT | Eliminates USB 2.0 bandwidth contention by assigning dedicated transaction translators and dual async buffers per port - critical for multi-peripheral docking stations. |
| Integrated HID-to-I2C bridge | Provides dedicated internal USB 2.0 port for I2C master control, enabling firmware updates and sensor interfacing without consuming external downstream ports. |
| Flexible battery charging support | Automatically selects DCP, ACP, Galaxy, or CDP mode based on upstream connection state and strap pin settings - simplifies compliance in consumer-facing docks. |
| Configurable power management | Supports per-port or ganged power switching with programmable polarity and over-current response - allows optimization for thermal, cost, and safety requirements. |
| Single 24-MHz clock input | Accepts crystal (XI/XO) or oscillator input; eliminates need for multiple clock sources and reduces BOM count in compact designs. |
Applications
| Computer Docking Stations | USB-C Monitors |
|---|---|
|
Use Scenario: Desktop expansion dock connecting laptop via USB-C to multiple peripherals (SSD, Ethernet, keyboard, display). IC Role / Device Role / Timing Role: Central USB hub managing concurrent SuperSpeed storage and high-speed HID traffic while maintaining strict USB 2.0 timing isolation via MTT. Use Value: Enables full-bandwidth utilization of all downstream ports without USB 2.0 transaction collisions, reducing peripheral enumeration latency and improving user experience. |
Use Scenario: USB-C monitor with built-in hub providing video, audio, and peripheral connectivity through single cable. IC Role / Device Role / Timing Role: Hub IC handling upstream DP Alt Mode passthrough while managing downstream USB peripherals with independent power control per port. Use Value: Per-port power switching isolates faults and enables selective wake-up, extending monitor standby time and meeting energy efficiency certifications. |
| Set-Top Box Hubs | Industrial Control Panels |
|
Use Scenario: Media hub aggregating IR receivers, USB storage, and HID remotes into single STB USB interface. IC Role / Device Role / Timing Role: USB 2.0-focused hub leveraging internal HID-to-I2C port to interface with IR decoder ICs and EEPROM-configured device descriptors. Use Value: Reduces component count by eliminating discrete I2C bridge ICs and enables field-upgradable product identification via EEPROM. |
Use Scenario: Factory HMI panel integrating USB peripherals (barcode scanner, flash drive) with isolated power domains. IC Role / Device Role / Timing Role: Robust hub IC operating across 0°C–70°C with ganged power control and YD/T 1591-2009-compliant charging for industrial handhelds. Use Value: Simplifies safety certification by providing certified charging handshaking and thermal-aware layout via low-RθJB VQFN package. |
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 |
|---|---|---|---|
| TUSB8041RGC | Two-port USB 3.1 Gen1 hub in same 64-pin VQFN package; lacks internal HID-to-I2C port and ACP/Galaxy charging modes. | Suitable for space-constrained applications requiring fewer downstream ports and no embedded I2C control. | Select when system requires minimal footprint and simplified charging (CDP/DCP only) without HID-to-I2C functionality. |
| UPD720210K8-711-BAC-A | Four-port USB 3.0 hub with integrated PCIe interface; requires host-side PCIe root complex instead of USB upstream connection. | Targeted at x86-based embedded systems where PCIe-to-USB bridging is preferred over native USB upstream topology. | Choose when host processor lacks native USB 3.x host controller and PCIe connectivity is available for higher integration density. |
Compared with TUSB8043, TUSB8041RGC reduces port count and feature set for cost-sensitive two-port applications, while UPD720210 requires PCIe infrastructure and offers no battery charging support - making TUSB8043 optimal for USB-native, charging-aware, and I2C-integrated dock designs.
Availability
TUSB8043 is available at Aetrix Electronics and suitable for computer docking stations, USB-C monitors, and set-top box hubs requiring stable component supply, long-term lifecycle support, and automotive-grade reliability validation.
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 company specializing in analog, embedded processing, and connectivity technologies, with leadership in USB interface solutions since the USB 1.1 era.
The TUSB8043 belongs to TI's USB 3.x hub product line, engineered specifically for high-reliability docking, display, and media hub applications demanding seamless multi-speed operation, robust power management, and embedded system configurability.
FAQ
What USB speeds does the TUSB8043 support on its upstream and downstream ports?
The TUSB8043 supports USB 3.1 Gen1 (5 Gbps) and USB 2.0 high-speed (480 Mbps) simultaneously on the upstream port. Downstream ports operate at SuperSpeed, high-speed, full-speed, or low-speed depending on upstream link capability - SuperSpeed is disabled if upstream connects only to HS/FS/LS hosts. This behavior is hardware-enforced and documented in Section 5 of the TUSB8043 datasheet.
Does the TUSB8043 require an external crystal, or can it use a clock oscillator?
The TUSB8043 accepts either a 24-MHz crystal connected between XI and XO pins (with 1-MΩ feedback resistor) or a 24-MHz CMOS oscillator driving the XI pin directly; XO may be left unconnected in oscillator mode. Both configurations meet USB 3.1 Gen1 jitter requirements, and the choice depends on board-level noise sensitivity and BOM constraints - the TUSB8043 datasheet specifies both options in Section 6.
How does the TUSB8043 implement battery charging for downstream devices?
The TUSB8043 implements battery charging through hardware-strapped and automatic mode selection: CDP mode activates when upstream is connected; DCP, ACP1–ACP3, Galaxy, and YD/T 1591-2009 modes activate when upstream is unconnected. Pin strapping (AUTOENz, BATENx) and internal logic determine mode sequence and current profiles - all modes are validated per USB BC 1.2 specification and detailed in Section 3 of the TUSB8043 datasheet.
Can the internal HID-to-I2C port on the TUSB8043 be used for firmware updates?
Yes, the internal USB 2.0-only port designated for HID-to-I2C functionality supports in-system programming of external I2C EEPROMs at 100 kHz or 400 kHz, enabling field-upgradable device descriptors, VID/PID, and port configurations. This capability is implemented via standard USB HID class requests and documented in Section 8.3 of the TUSB8043 datasheet.
What thermal considerations apply to the TUSB8043 in continuous SuperSpeed operation?
In full-load SuperSpeed operation (four SS devices active), the TUSB8043 draws up to 672 mA total supply current (45 mA @ 3.3 V, 672 mA @ 1.1 V), generating ~0.74 W dissipation. With its 64-pin VQFN package and RθJB = 5.3°C/W, a 4-layer PCB with 1-in² copper pour under the thermal pad limits junction temperature rise to ~4°C above ambient - ensuring reliable operation within the 0°C–70°C commercial range per Section 7.4 of the datasheet.
TUSB8043RGCT 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:
- -
TUSB8043RGCT FAQ
1.How can I place an order for TUSB8043RGCT through Aetrix?
Please submit a Request for Quotation (RFQ) for TUSB8043RGCT 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 TUSB8043RGCT reliable?
The price and inventory of TUSB8043RGCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUSB8043RGCT is usually 5 days.
3.What payment methods are accepted for TUSB8043RGCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUSB8043RGCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUSB8043RGCT?
TUSB8043RGCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUSB8043RGCT 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 TUSB8043RGCT?
For technical support, including TUSB8043RGCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUSB8043RGCT requirements.
6.How does Aetrix verify that TUSB8043RGCT is sourced from the original manufacturer or authorized distributors?
All TUSB8043RGCT 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 TUSB8043RGCT meets industry standards.
7.What is the process for return or replacement of TUSB8043RGCT?
All TUSB8043RGCT units undergo pre-shipment inspection (PSI). If there is an issue with TUSB8043RGCT, 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 TUSB8043RGCT part is unused and in its original packaging.
Return procedure for TUSB8043RGCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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