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Texas Instruments TUSB8040PFP
- Part No.:
- TUSB8040PFP
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 80-TQFP Exposed Pad
- Datasheet:
-
TUSB8040PFP.pdf
- Description:
- IC HUB CONTROLLER USB 80HTQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,734
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Product details
Overview
TUSB8040PFP from Texas Instruments is a USB 3.0-compliant four-port hub IC in an 80-pin QFP package, supporting simultaneous SuperSpeed (5 Gbps), high-speed (480 Mbps), and full-speed/low-speed connectivity on upstream and downstream ports. It implements ganged power switching with over-current protection, integrates I²C/SMBus configuration for VID/PID/strings, and provides dedicated status outputs for SS/HS connection and suspend states - deployed in embedded docking stations and industrial USB expansion modules.
For engineers reviewing the TUSB8040PFP datasheet, TUSB8040PFP pinout, TUSB8040PFP application, or TUSB8040PFP equivalent, key selection considerations include ganged vs. per-port power control, SuperSpeed low-power state (U1/U2) enablement via SDA/SMBDAT, SMBus address configurability, and compatibility with TI's USB 3.0 hub firmware update flow.
Technical Context
The TUSB8040PFP integrates dual-mode USB 2.0 and USB 3.0 hub logic with four independent transaction translators (MTT architecture), enabling concurrent high-bandwidth transfers across all downstream ports. Its internal clock generation accepts either a 24-MHz crystal (XI/XO/VSSOSC) or external oscillator, eliminating need for separate clock sources.
Ganged operation is fixed for TUSB8040PFP: PWRON0z_BATEN0 controls power to all four downstream ports simultaneously, and OVERCUR0z signals over-current events for the entire port group. Configuration registers (e.g., Device Configuration Register at offset 5h, Battery Charging Support Register at 6h) are accessible via I²C EEPROM or SMBus host, but Device Status and Command Register (F8h) is write-protected from external configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Standard | USB 3.0 compliant (TID# 330000003); backward compatible with USB 2.0/1.1 |
| Data Rate | SuperSpeed: 5 Gbps; High-Speed: 480 Mbps; Full-Speed: 12 Mbps; Low-Speed: 1.5 Mbps |
| Port Count | 1 upstream + 4 downstream ports; all support SuperSpeed/HS/FS/LS depending on upstream link capability |
| Power Rails | 1.1-V core (VDD11) and 3.3-V I/O (VDD33); no internal LDOs - requires external regulators |
| Configuration Interface | I²C EEPROM or SMBus slave (configurable address bits); supports VID/PID, strings, battery charging enable/disable |
| Low-Power States | U1/U2 support enabled/disabled via SDA/SMBDAT pin state at reset de-assertion |
| Operating Temp | Commercial range: 0°C to 70°C |
| Package | 80-pin QFP (PFP), thermal pad exposed on bottom |
Pinout & Package
80-pin QFP (PFP) package with exposed thermal pad; 3.3-V and 1.1-V power domains separated, requiring independent decoupling; pin-compatible with TUSB8041 but functionally distinct due to ganged-only power control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GRSTz (33) | Global reset input | Asynchronous active-low reset; must be held ≥3 ms after power rails stabilize |
| PWRON0z_BATEN0 (39) | Ganged port power/battery enable | Controls all 4 downstream ports; sampled at reset to set battery charging support for all ports |
| OVERCUR0z (40) | Ganged over-current indicator | Active-low signal indicating over-current event on any downstream port - triggers global power-off |
| SCL/SMBCLK (34) & SDA/SMBDAT (35) | I²C/SMBus interface | Configurable via SMBUSz (36); SDA state at reset determines U1/U2 enablement |
| SS, HS, SS_SUSPEND, HS_SUSPEND (23,22,25,24) | Status outputs | Dedicated open-drain outputs reporting real-time upstream link mode and suspend state |
| VDD11 (1,5,10,11,16,20,26,32,37,42,46,51,52,57,61,67,71) & VDD33 (4,19,21,38,43,58,68,72,77,80) | Power supplies | Separate 1.1-V core and 3.3-V I/O rails; each requires local ceramic decoupling |
Key Features
| Feature | Design Value |
|---|---|
| Ganged power switching | Single PWRON0z_BATEN0 pin controls power delivery to all four downstream ports - simplifies external PMIC design |
| Multi-Transaction Translator (MTT) | Four independent TTs (one per port) prevent bandwidth contention between high-speed devices sharing same hub |
| Configurable USB device identity | VID/PID, manufacturer/product/serial strings programmable via I²C EEPROM or SMBus - enables OEM branding |
| Battery Charging 1.2 support | CDP-compliant charging enabled per-port via register or pin strap - supports smartphone/tablet fast-charge detection |
| SuperSpeed status signaling | Dedicated SS and SS_SUSPEND pins provide hardware-level visibility into upstream link negotiation without USB stack polling |
Applications
| Desktop Docking Station | Industrial USB Expansion Module |
|---|---|
Use Scenario: A compact desktop dock connects laptop via USB 3.0 upstream while providing four downstream ports for peripherals including SSD, webcam, keyboard, and Ethernet adapter. IC Role / Device Role / Timing Role: TUSB8040PFP acts as the central USB 3.0 hub controller, managing SuperSpeed data routing, power sequencing, and link-state reporting to host OS. Use Value: Enables single-cable docking with full 5-Gbps bandwidth allocation across multiple high-throughput devices using MTT architecture. | Use Scenario: An industrial control panel integrates USB 3.0 expansion for connecting barcode scanners, label printers, and human-machine interface (HMI) devices in factory automation. IC Role / Device Role / Timing Role: TUSB8040PFP serves as a robust, temperature-rated hub with ganged power control and over-current protection for harsh environments. Use Value: Simplified power management reduces BOM count; dedicated SS/HS status pins allow real-time link health monitoring in deterministic PLC cycles. |
| Embedded KVM Switch | Medical Imaging Peripheral Hub |
Use Scenario: A secure KVM switch routes keyboard, video, and USB peripherals between classified and non-classified workstations using isolated USB paths. IC Role / Device Role / Timing Role: TUSB8040PFP provides USB 3.0 hub functionality with configurable VID/PID and string descriptors to maintain device identity across secure domains. Use Value: I²C-based customization allows unique device enumeration per security zone - preventing OS-level fingerprinting across networks. | Use Scenario: A medical ultrasound cart uses TUSB8040PFP to connect high-resolution DICOM storage drives, foot pedals, and diagnostic sensors via USB 3.0. IC Role / Device Role / Timing Role: TUSB8040PFP manages simultaneous high-bandwidth imaging data transfer and low-latency control signaling under strict EMC requirements. Use Value: Ganged over-current protection ensures system-level fault containment - critical for patient-connected equipment compliance with IEC 60601-1. |
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 |
|---|---|---|---|
| TUSB8041PFP | Same 80-pin QFP footprint but supports per-port power switching and over-current protection - not ganged | Required when individual port power cycling or selective charging is needed | Select TUSB8041PFP only if ganged operation is insufficient; pinout differs in power control signal mapping |
| VL812-Q4 | USB 3.0 four-port hub with integrated 3.3-V LDO; supports both ganged and per-port modes via configuration | Reduces external regulator count; offers broader temperature range (–40°C to 85°C) | Choose VL812-Q4 for extended temp designs or simplified power supply - requires layout revision due to different pinout and thermal pad geometry |
Compared with TUSB8040PFP, TUSB8041PFP enables granular port control at the cost of increased external component count, while VL812-Q4 trades TI's ecosystem integration for higher integration and wider operating range - neither is pin-compatible, and both require firmware and layout validation.
Availability
TUSB8040PFP is available at Aetrix Electronics and suitable for desktop docking stations, industrial USB expansion modules, embedded KVM switches, and medical imaging peripheral hubs requiring stable component supply and long-term lifecycle support.
Supply support for TUSB8040PFP 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 solutions, with leadership in USB protocol implementation and industrial-grade interface ICs.
The TUSB8040 product line delivers USB 3.0 hub functionality optimized for commercial-temperature embedded systems requiring deterministic power control, robust configuration flexibility, and seamless OS compatibility without custom drivers.
FAQ
Is TUSB8040PFP pin-compatible with other TI USB 3.0 hub variants like TUSB8041PFP?
No, TUSB8040PFP is not pin-compatible with TUSB8041PFP. While both use the 80-pin QFP (PFP) package, their power control and over-current signaling differ fundamentally: TUSB8040PFP uses ganged PWRON0z_BATEN0 and OVERCUR0z for all four ports, whereas TUSB8041PFP provides individual port control signals. PCB layout and firmware initialization must be redesigned for interchange.
Does TUSB8040PFP support USB 2.0-only operation when the upstream link lacks SuperSpeed capability?
Yes, TUSB8040PFP automatically adapts: when the upstream port detects only high-speed or full-speed/low-speed signaling, it disables SuperSpeed functionality on all downstream ports while maintaining full USB 2.0 hub operation - including MTT, battery charging, and configuration via I²C/SMBus. No firmware change is required.
How is the USB device identity (VID/PID) configured on TUSB8040PFP?
TUSB8040PFP supports VID/PID configuration through either an external I²C EEPROM or SMBus host controller. The values are loaded at power-up from registers at offsets 1h–4h (Vendor ID LSB/MSB, Product ID LSB/MSB). Pin strapping cannot set VID/PID - only EEPROM/SMBus programming enables OEM-specific device enumeration.
What is the role of the FULLPWRMGMTz_SMB A1 pin on TUSB8040PFP?
FULLPWRMGMTz_SMB A1 (pin 41) serves dual purpose: at reset de-assertion, its logic level sets whether full power management (ganged port control) is enabled; when SMBus mode is active (SMBUSz = 0), it becomes SMBus slave address bit 1 - allowing up to four TUSB8040PFP devices on one SMBus segment with distinct addresses.
Can TUSB8040PFP be used in systems requiring extended temperature range beyond 0°C to 70°C?
No, TUSB8040PFP is specified only for commercial temperature range (0°C to 70°C) per its datasheet. It lacks characterization or qualification for industrial (–40°C to 85°C) or automotive temperature grades. For extended-range applications, consider alternatives such as VL812-Q4 or ASMedia ASM1083 derivatives with validated extended-temp operation.
TUSB8040PFP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 80-TQFP 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:
- 80-HTQFP (12x12)
- Grade:
- -
- Qualification:
- -
TUSB8040PFP FAQ
1.How can I place an order for TUSB8040PFP through Aetrix?
Please submit a Request for Quotation (RFQ) for TUSB8040PFP 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 TUSB8040PFP reliable?
The price and inventory of TUSB8040PFP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUSB8040PFP is usually 5 days.
3.What payment methods are accepted for TUSB8040PFP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUSB8040PFP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUSB8040PFP?
TUSB8040PFP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUSB8040PFP 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 TUSB8040PFP?
For technical support, including TUSB8040PFP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUSB8040PFP requirements.
6.How does Aetrix verify that TUSB8040PFP is sourced from the original manufacturer or authorized distributors?
All TUSB8040PFP 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 TUSB8040PFP meets industry standards.
7.What is the process for return or replacement of TUSB8040PFP?
All TUSB8040PFP units undergo pre-shipment inspection (PSI). If there is an issue with TUSB8040PFP, 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 TUSB8040PFP part is unused and in its original packaging.
Return procedure for TUSB8040PFP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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