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Texas Instruments TUSB8040ARKMT
- Part No.:
- TUSB8040ARKMT
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 100-WQFN Dual Rows, Exposed Pad
- Datasheet:
-
TUSB8040ARKMT.pdf
- Description:
- IC HUB CONTROLLER USB 100WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:139
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Product details
Overview
TUSB8040ARKMT 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) connectivity on all downstream ports, with integrated Multi-Transaction Translator (MTT), battery charging support (CDP/DCP), and 100-pin QFN packaging - deployed in docking stations, monitors, and set-top boxes.
For engineers reviewing the TUSB8040ARKMT datasheet, TUSB8040ARKMT pinout, TUSB8040ARKMT application, or TUSB8040ARKMT equivalent, key selection criteria include per-port power switching, SMBus/I²C configurability for VID/PID/strings, SuperSpeed upstream handshake capability, and commercial temperature range (0°C to 70°C) compliance.
Technical Context
The TUSB8040ARKMT implements a dual-mode USB hub architecture: a dedicated USB 3.0 hub layer handling SuperSpeed packet routing and a parallel USB 2.0 hub layer with four independent transaction translators (one per port), enabling concurrent high-bandwidth transfers without TT contention. It supports both ganged and per-port power control with over-current detection on all four downstream ports.
Configuration is flexible via pin strapping, external I²C EEPROM (up to 256-byte), or SMBus slave interface - allowing runtime customization of vendor/product strings, serial number, battery charging enablement per port, and removable/permanent device marking. The device uses a single 24-MHz crystal or oscillator input and requires no OS-specific drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Compliance | USB 3.0 TID# 330000037; backward compatible with USB 2.0/1.1 |
| Port Count | 1 upstream + 4 downstream ports, all supporting SuperSpeed, HS, FS, LS |
| Data Rate | SuperSpeed: 5 Gbps; High-Speed: 480 Mbps; Full-Speed: 12 Mbps |
| Power Management | Per-port or ganged VBUS switching; dedicated OVERCURz inputs per port |
| Configuration Interface | I²C/SMBus slave (configurable address); pin-strappable defaults |
| Operating Temperature | 0°C to 70°C (commercial grade) |
| Package | 100-pin QFN (12 mm × 12 mm, 0.5-mm pitch, exposed thermal pad) |
Pinout & Package
Package: 100-pin QFN (12 mm × 12 mm, 0.5-mm pitch, thermally enhanced with exposed pad).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| USB_SSTXP_UP / USB_SSTXM_UP | Upstream SuperSpeed TX differential pair | Drives 5-Gbps differential signaling to host controller; requires controlled 90-Ω impedance routing |
| USB_SSRXP_UP / USB_SSRXM_UP | Upstream SuperSpeed RX differential pair | Receives 5-Gbps differential signaling from host; includes built-in equalization |
| PWRON0z_BATEN0 – PWRON3z_BATEN3 | Per-port power/battery charge enable | Configures port power switch state and battery charging mode (CDP/DCP) at reset de-assertion |
| OVERCUR0z – OVERCUR3z | Per-port over-current detection inputs | Active-low signals indicating over-current fault; pulled high externally when unused |
| SCL/SMBCLK & SDA/SMDAT | I²C/SMBus configuration interface | Allows runtime reprogramming of VID/PID, strings, and port attributes without reflashing |
Key Features
| Feature | Design Value |
|---|---|
| Four independent transaction translators (MTT) | Enables full bandwidth utilization across all four downstream ports simultaneously - avoids USB 2.0 TT bottleneck |
| Battery Charging 1.2 & YD/T 1591-2009 support | Enables CDP mode when upstream connected; DCP mode when upstream disconnected - no firmware changes required |
| 128-bit UUID and customizable strings | Supports unique device identification and branding via EEPROM/SMBus - essential for certified USB products |
| Configurable SMBus address | Allows multiple TUSB8040ARKMT devices on same bus without address conflict - simplifies multi-hub designs |
| On-board EEPROM programming via USB | Enables field updates of configuration data using only the upstream USB connection - eliminates need for external programmers |
Applications
| Docking Stations | Monitors with USB Hub |
|---|---|
Use Scenario: A laptop docks into a peripheral-rich station providing keyboard, mouse, storage, and display connectivity via a single USB-C/USB 3.0 link. IC Role / Device Role / Timing Role: TUSB8040ARKMT acts as the central USB 3.0 hub, managing simultaneous SuperSpeed storage traffic and high-speed HID transfers while maintaining strict USB timing budgets. Use Value: Enables four independent downstream ports with MTT architecture - eliminating USB 2.0 transaction translator bottlenecks during concurrent SSD and webcam usage. |
Use Scenario: A 4K monitor integrates USB 3.0 upstream connectivity and exposes four downstream ports for peripherals like webcams, headsets, and flash drives. IC Role / Device Role / Timing Role: TUSB8040ARKMT serves as the embedded hub IC, handling upstream SuperSpeed video auxiliary channel and downstream peripheral enumeration with precise USB suspend/resume timing. Use Value: Per-port power switching and over-current protection ensure safe hot-plug operation of mixed-speed devices without affecting other ports. |
| Set-Top Boxes | Industrial PC Expansion Units |
Use Scenario: A media streaming box provides USB ports for external HDDs, wireless adapters, and IR receivers - requiring reliable plug-and-play under varying load conditions. IC Role / Device Role / Timing Role: TUSB8040ARKMT functions as the system's USB expansion hub, managing power sequencing, battery charging for peripherals, and robust enumeration across temperature variations. Use Value: Battery Charging 1.2 compliance allows direct charging of smartphones/tablets via downstream ports - enhancing user experience without additional circuitry. |
Use Scenario: An industrial control panel adds USB 3.0 connectivity for data loggers, barcode scanners, and human-machine interface (HMI) devices in factory environments. IC Role / Device Role / Timing Role: TUSB8040ARKMT operates as a ruggedized hub IC with configurable SMBus addressing and EEPROM-based string customization for OEM branding. Use Value: Pin-strappable configuration enables fixed-function deployment without external memory - reducing BOM cost and improving supply chain resilience. |
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; lacks per-port battery charging control; uses different register map and SMBus protocol | Targeted at space-constrained designs where fourth port is unnecessary; no DCP mode support | Select when port count and battery charging flexibility are secondary to footprint reduction |
| UPD720202K8-701-BAC-A | 4-port USB 3.0 hub with integrated PCIe-to-USB bridge; requires PCIe host interface instead of native USB upstream | Used in add-in cards or systems lacking native USB 3.0 host controller; not a drop-in replacement | Select only when PCIe host interface is available and native USB upstream is unavailable |
Compared with USB3503-AEZG and UPD720202K8-701-BAC-A, the TUSB8040ARKMT uniquely combines full four-port SuperSpeed support, per-port battery charging configuration, and native USB upstream connectivity - making it optimal for standalone hub implementations requiring maximum USB feature fidelity and design simplicity.
Availability
TUSB8040ARKMT is available at Aetrix Electronics and suitable for docking stations, monitors, and set-top boxes requiring stable component supply, long-term lifecycle support, and full USB-IF certification compliance.
Supply support for TUSB8040ARKMT 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 decades of leadership in USB interface solutions and industrial-grade IC design.
The TUSB8040ARKMT belongs to TI's USB 3.0 hub product line, engineered specifically for high-reliability consumer and industrial docking, display, and peripheral expansion applications demanding full-speed USB feature implementation and certification readiness.
FAQ
What USB speed modes does the TUSB8040ARKMT support on its downstream ports?
The TUSB8040ARKMT supports SuperSpeed (5 Gbps), high-speed (480 Mbps), full-speed (12 Mbps), and low-speed (1.5 Mbps) on all four downstream ports. Speed negotiation is automatic and depends on the upstream connection: SuperSpeed is enabled only when the upstream port is connected to a SuperSpeed-capable host; otherwise, it falls back to high-speed or full-speed modes as needed. This behavior is defined in the USB specification and implemented in hardware within the TUSB8040ARKMT.
Does the TUSB8040ARKMT require an external crystal or can it use an oscillator?
The TUSB8040ARKMT 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. When using a crystal, VSSOSC must serve as the return path for load capacitors and must not be tied to PCB ground; when using an oscillator, VSSOSC is connected to PCB ground. Both configurations are fully supported and validated in the TUSB8040ARKMT datasheet.
How is battery charging configured on the TUSB8040ARKMT?
Battery charging on the TUSB8040ARKMT is configured per port via the PWRONx_z_BATENx pins sampled at reset de-assertion: logic high enables charging support. When upstream is connected, the port operates as a Charging Downstream Port (CDP) compliant with USB Battery Charging 1.2; when upstream is disconnected, it operates as a Dedicated Charging Port (DCP) compliant with both BC 1.2 and YD/T 1591-2009. No firmware or register writes are required.
Can the TUSB8040ARKMT operate without an external EEPROM?
Yes, the TUSB8040ARKMT operates fully without an external EEPROM. Default configuration (VID/PID, port enablement, removable flags) is determined by pin strapping. EEPROM is optional and used only for customizing vendor/product strings, serial number, and runtime reconfiguration via I²C/SMBus. All core hub functionality - including USB enumeration, power switching, and SuperSpeed operation - works immediately after power-up with no external memory.
What is the thermal pad requirement for the TUSB8040ARKMT QFN package?
The TUSB8040ARKMT's 100-pin QFN package includes an exposed thermal pad that must be soldered to a PCB copper pour for thermal and electrical grounding. TI recommends a 6×6 array of thermal vias (0.3-mm diameter, 0.65-mm pitch) connecting the pad to inner-layer ground planes. Insufficient thermal pad connection risks exceeding junction temperature limits under sustained SuperSpeed traffic, potentially triggering thermal shutdown or reduced reliability.
TUSB8040ARKMT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-WQFN Dual Rows, Exposed Pad
- Programmable:
- Not Verified
- Protocol:
- USB
- Function:
- Hub Controller
- Interface:
- USB
- Standards:
- USB 3.0
- Voltage - Supply:
- 1.1V, 3.3V
- Current - Supply:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 100-WQFN-MR (9x9)
- Grade:
- -
- Qualification:
- -
TUSB8040ARKMT FAQ
1.How can I place an order for TUSB8040ARKMT through Aetrix?
Please submit a Request for Quotation (RFQ) for TUSB8040ARKMT 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 TUSB8040ARKMT reliable?
The price and inventory of TUSB8040ARKMT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUSB8040ARKMT is usually 5 days.
3.What payment methods are accepted for TUSB8040ARKMT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUSB8040ARKMT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUSB8040ARKMT?
TUSB8040ARKMT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUSB8040ARKMT 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 TUSB8040ARKMT?
For technical support, including TUSB8040ARKMT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUSB8040ARKMT requirements.
6.How does Aetrix verify that TUSB8040ARKMT is sourced from the original manufacturer or authorized distributors?
All TUSB8040ARKMT 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 TUSB8040ARKMT meets industry standards.
7.What is the process for return or replacement of TUSB8040ARKMT?
All TUSB8040ARKMT units undergo pre-shipment inspection (PSI). If there is an issue with TUSB8040ARKMT, 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 TUSB8040ARKMT part is unused and in its original packaging.
Return procedure for TUSB8040ARKMT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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