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Texas Instruments TUSB8044AIRGCT
- Part No.:
- TUSB8044AIRGCT
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
TUSB8044AIRGCT.pdf
- Description:
- USB TRANSCEIVER
- Quantity:
- Payment:
- Shipping:
Inventory:202
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Product details
Overview
TUSB8044AIRGCT from Texas Instruments is a four-port USB 3.2 x1 Gen1 (5 Gbps) hub IC with integrated USB 2.0 Billboard 1.21 functionality, MTT architecture, per-port/ganged power switching, and I2C-based HID-to-I2C bridge for configuration and control. It operates across 0°C to 70°C and supports battery charging modes including CDP, DCP (YD/T 1591-2009), and Galaxy Charging in docking stations and monitors.
For engineers reviewing the TUSB8044AIRGCT datasheet, TUSB8044AIRGCT pinout, TUSB8044AIRGCT application, or TUSB8044AIRGCT equivalent, key selection criteria include SuperSpeed/HS/FS port concurrency, billboard compliance, USB 2.0 HID-to-I2C capability, 64-pin VQFN (RGC) package compatibility, and upstream/downstream signal routing for USB 3.2 x1 Gen1 systems.
Technical Context
The TUSB8044AIRGCT implements a Multi-Transaction Translator (MTT) hub architecture with four independent transaction translators and two asynchronous endpoint buffers per translator, enabling concurrent high-speed/full-speed device connections on downstream ports. Its upstream port supports simultaneous SuperSpeed (5 Gbps), high-speed (480 Mbps), and full-speed (12 Mbps) operation depending on host capability.
It integrates a USB 2.0 Billboard device compliant with USB Device Class Definition for Billboard Devices v1.21, attached to the highest-numbered downstream port, and provides an internal USB HID-to-I2C interface supporting 100 kHz/400 kHz clock rates for EEPROM and register access. The device uses a single 24-MHz crystal or oscillator input and supports OTP ROM, serial EEPROM, or I2C/SMBus slave for VID/PID and port customization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Speed Support | USB 3.2 x1 Gen1 (5 Gbps) + USB 2.0 HS/FS/LS on all ports; upstream enables concurrent SS+HS operation |
| Port Count & Type | Four external downstream USB ports + one internal USB 2.0-only port for HID-to-I2C and billboard functions |
| Power Management | Per-port or ganged power switching with dedicated PWRCTL/BATEN and OVERCURz pins per port |
| Battery Charging | CDP mode (upstream connected), DCP mode (upstream unconnected, YD/T 1591-2009 compliant), ACP1–ACP3 auto-cycling |
| Billboard Compliance | USB Billboard Device Class v1.21; communicates Alternate Mode status via dedicated downstream port |
| Configuration Interface | I2C/SMBus slave interface (SCL/SDA) + OTP ROM or serial EEPROM support for VID/PID, port config, strings, UUID |
| Package & Thermal | 64-pin VQFN (RGC), 9.0 mm × 9.0 mm; RθJA = 26°C/W, junction temp rated to 105°C |
Pinout & Package
Package: 64-pin VQFN (RGC), 9.0 mm × 9.0 mm, exposed thermal pad, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| USB_SSTXP_UP / USB_SSTXM_UP | SuperSpeed upstream transmitter differential pair | Drives 5-Gbps differential signaling to host; requires controlled 90-Ω impedance routing |
| USB_SSRXP_UP / USB_SSRXM_UP | SuperSpeed upstream receiver differential pair | Receives 5-Gbps differential signals from host; AC-coupled with 0.1-µF capacitors |
| USB_DP_UP / USB_DM_UP | USB 2.0 upstream transceiver differential pair | Handles HS/FS/LS signaling when SS link is disabled; shared with upstream VBUS detection path |
| PWRCTL1–PWRCTL4 / BATEN1–BATEN4 | Port power control / battery charging enable | Active-high or active-low (configurable) GPIOs controlling external power switches and charging mode per port |
| OVERCUR1z–OVERCUR4z | Per-port over-current detection inputs | Active-low open-drain inputs monitoring downstream power switch fault outputs |
| SCL/SMBCLK & SDA/SMBDAT | I2C/SMBus interface | Configurable dual-mode interface for EEPROM programming or SMBus host communication; supports clock stretching |
| BBEN/GANGED,HS_UP | Billboard enable / ganged mode select / HS upstream indicator | Enables billboard device in I2C mode; selects ganged vs. individual power control in SMBus mode; indicates HS upstream connection status |
Key Features
| Feature | Design Value |
|---|---|
| Multi-Transaction Translator (MTT) Hub | Four independent TTs with two async endpoint buffers each enable true concurrent HS/FS device operation without bandwidth contention |
| Integrated USB 2.0 Billboard 1.21 | Dedicated billboard device on highest-numbered downstream port reports Alternate Mode status to host OS without requiring external MCU |
| USB HID-to-I2C Bridge | Internal USB 2.0 port operates at HS/FS speed matching upstream link, enabling direct I2C EEPROM programming and register access via standard HID class drivers |
| Flexible Power Switching Modes | Hardware-strappable per-port or ganged power control allows optimization for portable dock (per-port) or fixed monitor (ganged) use cases |
| Triple Battery Charging Support | Simultaneous CDP (host-connected), DCP (YD/T 1591-2009 compliant), and Galaxy Charging modes reduce need for external charging ICs |
Applications
| Computer Docking Stations | USB-C Monitor Hubs |
|---|---|
Use Scenario: A compact desktop dock connects laptop via USB-C to provide four downstream USB-A ports, video output, and Ethernet. IC Role / Device Role / Timing Role: TUSB8044AIRGCT acts as the primary USB 3.2 x1 Gen1 hub managing concurrent SuperSpeed peripherals while hosting billboard for DisplayPort Alt Mode negotiation. Use Value: Eliminates need for separate USB hub and billboard IC, reducing BOM count and PCB area by integrating both functions in one 64-pin VQFN. | Use Scenario: A 4K monitor includes USB 3.2 hub functionality to charge mobile devices and connect keyboards/mice alongside video input. IC Role / Device Role / Timing Role: TUSB8044AIRGCT serves as the USB hub and charging controller, using its DCP and Galaxy Charging modes to deliver up to 1.5 A per port without host negotiation. Use Value: Enables certified fast charging for smartphones and tablets directly from monitor USB ports, meeting YD/T 1591-2009 and Samsung Galaxy requirements. |
| Set-Top Box Expansion Hubs | Industrial Embedded USB Hubs |
Use Scenario: An IPTV set-top box adds peripheral connectivity via a front-panel USB hub supporting flash drives, webcams, and remote controls. IC Role / Device Role / Timing Role: TUSB8044AIRGCT operates as a compound USB 2.0/3.2 device, presenting itself as both hub and HID-to-I2C bridge to manage internal system firmware updates via USB. Use Value: Allows field-upgradable firmware through standard USB mass storage class, avoiding proprietary programming interfaces or service calls. | Use Scenario: A ruggedized industrial PC uses a USB hub to connect barcode scanners, thermal printers, and serial adapters in factory automation equipment. IC Role / Device Role / Timing Role: TUSB8044AIRGCT provides robust over-current protection with per-port fault isolation and operates reliably from –40°C to 85°C (industrial variant TUSB8044AI). Use Value: Prevents single-point failure: over-current on one port disables only that port's power, maintaining connectivity for critical peripherals on other ports. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB 3.x hub applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| USB2514B-AEZG | USB 2.0-only quad-port hub; no SuperSpeed support, no billboard, no HID-to-I2C bridge | Suitable for cost-sensitive HS/FS-only hubs where USB 3.x and Alt Mode reporting are unnecessary | Select when SuperSpeed bandwidth and USB-C Alt Mode status reporting are not required; lower BOM cost but lacks TUSB8044AIRGCT's integration |
| TUSB8041ARGCR | Single-chip 4-port USB 3.2 x1 Gen1 hub with identical pinout and feature set, but lacks integrated USB 2.0 Billboard and HID-to-I2C port | Used in simpler hubs where billboard functionality is handled externally or omitted entirely | Choose when billboard and HID-to-I2C are not needed; same footprint and electrical interface but reduced integration level |
Compared with USB2514B-AEZG and TUSB8041ARGCR, the TUSB8044AIRGCT uniquely combines USB 3.2 x1 Gen1 hub, USB 2.0 Billboard 1.21, and HID-to-I2C bridge in one package-enabling USB-C Alt Mode status reporting and in-system EEPROM programming without external components.
Availability
TUSB8044AIRGCT is available at Aetrix Electronics and suitable for computer docking stations, USB-C monitor hubs, and set-top box expansion modules requiring stable component supply, industrial temperature range support, and long-term lifecycle availability.
Supply support for TUSB8044AIRGCT 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 interface ICs and industrial-grade timing and power products.
The TUSB8044AIRGCT belongs to TI's USB 3.x Hub product line, designed specifically for space-constrained, high-integration USB-C docking and display applications requiring concurrent SuperSpeed/High-Speed operation and USB Billboard functionality.
FAQ
What USB standards does the TUSB8044AIRGCT support?
The TUSB8044AIRGCT supports USB 3.2 x1 Gen1 (5 Gbps), USB 2.0 High-Speed (480 Mbps), Full-Speed (12 Mbps), and Low-Speed (1.5 Mbps). It complies with USB Battery Charging Specification v1.2 (CDP/DCP), Chinese Telecommunications Standard YD/T 1591-2009, and USB Billboard Device Class v1.21. The TUSB8044AIRGCT enables concurrent SuperSpeed and High-Speed operation on the upstream port when connected to a capable host.
Does the TUSB8044AIRGCT include a USB Billboard function, and how is it implemented?
Yes, the TUSB8044AIRGCT integrates a USB 2.0 Billboard device compliant with USB Device Class Definition for Billboard Devices v1.21. It is hardwired to the highest-numbered downstream port of the internal USB 2.0 hub and reports Alternate Mode status (e.g., DisplayPort or Thunderbolt) to the host OS without requiring external logic. The TUSB8044AIRGCT uses BBEN/GANGED,HS_UP and BBbmConfigured0/1 pins to configure billboard enable and bmConfigured descriptor bits during reset sampling.
How does the TUSB8044AIRGCT handle battery charging on downstream ports?
The TUSB8044AIRGCT supports three battery charging modes: CDP (when upstream port is connected), DCP (when upstream is unconnected and compliant with YD/T 1591-2009), and Galaxy Charging. It also implements automatic ACP1–ACP3 mode cycling on upstream disconnect. Each downstream port has dedicated PWRCTLx/BATENx and OVERCURxz pins for hardware-controlled power switching and over-current protection. The TUSB8044AIRGCT samples these pins at reset de-assertion to configure charging support per port.
Can the TUSB8044AIRGCT be configured without external firmware?
Yes, the TUSB8044AIRGCT supports multiple configuration methods: pin strapping for basic features (e.g., battery charging enable, power control polarity), OTP ROM for immutable settings, and I2C/SMBus slave interface for runtime reconfiguration of VID/PID, port behavior, and manufacturer/product strings. The TUSB8044AIRGCT also supports in-system EEPROM programming via its internal USB HID-to-I2C interface using standard USB class drivers-no custom firmware required.
What is the role of the internal USB 2.0-only port in the TUSB8044AIRGCT?
The internal USB 2.0-only port in the TUSB8044AIRGCT implements a HID-to-I2C bridge, enabling direct I2C communication (at 100 kHz or 400 kHz) through standard USB HID class drivers. This port supports high-speed or full-speed operation matching the upstream link speed and is used for EEPROM programming, register access, and custom configuration. The TUSB8044AIRGCT uses this interface to eliminate external microcontrollers in applications requiring dynamic configuration or field updates.
TUSB8044AIRGCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-VFQFN Exposed Pad
- Programmable:
- Not Verified
- Protocol:
- USB
- Function:
- Hub Controller
- Interface:
- I2C, SMBus
- Standards:
- USB 3.1
- Voltage - Supply:
- 0.99V ~ 1.26V, 3V ~ 3.6V
- Current - Supply:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Supplier Device Package:
- 64-VQFN (9x9)
- Grade:
- -
- Qualification:
- -
TUSB8044AIRGCT FAQ
1.How can I place an order for TUSB8044AIRGCT through Aetrix?
Please submit a Request for Quotation (RFQ) for TUSB8044AIRGCT 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 TUSB8044AIRGCT reliable?
The price and inventory of TUSB8044AIRGCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUSB8044AIRGCT is usually 5 days.
3.What payment methods are accepted for TUSB8044AIRGCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUSB8044AIRGCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUSB8044AIRGCT?
TUSB8044AIRGCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUSB8044AIRGCT 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 TUSB8044AIRGCT?
For technical support, including TUSB8044AIRGCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUSB8044AIRGCT requirements.
6.How does Aetrix verify that TUSB8044AIRGCT is sourced from the original manufacturer or authorized distributors?
All TUSB8044AIRGCT 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 TUSB8044AIRGCT meets industry standards.
7.What is the process for return or replacement of TUSB8044AIRGCT?
All TUSB8044AIRGCT units undergo pre-shipment inspection (PSI). If there is an issue with TUSB8044AIRGCT, 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 TUSB8044AIRGCT part is unused and in its original packaging.
Return procedure for TUSB8044AIRGCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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