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Texas Instruments TUSB8042AIRGCT
- Part No.:
- TUSB8042AIRGCT
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
TUSB8042AIRGCT.pdf
- Description:
- USB TRANSCEIVER
- Quantity:
- Payment:
- Shipping:
Inventory:173
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Product details
Overview
TUSB8042AIRGCT from Texas Instruments is a four-port USB 3.2 x1 Gen1 (5 Gbps) hub IC with integrated USB 2.0 MTT architecture, per-port power switching, and battery charging support including DCP, CDP, ACPx, and Galaxy Charging modes. It operates across 0°C to 70°C in a 64-pin VQFN (RGC) package and serves as the central connectivity controller in multi-peripheral USB expansion systems.
For engineers reviewing the TUSB8042AIRGCT datasheet, TUSB8042AIRGCT pinout, TUSB8042AIRGCT application, or TUSB8042AIRGCT equivalent, key selection criteria include SuperSpeed/USB 2.0 dual-mode operation, 4-port independent power control, I²C/SMBus configurability, 24 MHz clock input compatibility, and YD/T 1591-2009-compliant DCP mode for industrial docking and embedded host applications.
Technical Context
The TUSB8042AIRGCT implements a USB 3.2 x1 Gen1 hub with full backward compatibility to USB 2.0 high-speed (480 Mbps), full-speed (12 Mbps), and low-speed (1.5 Mbps) signaling on all ports. Its Multiple Transaction Translator (MTT) architecture provides four dedicated transaction translators with two asynchronous endpoint buffers each, enabling concurrent high-bandwidth transfers without bandwidth contention.
It supports dynamic upstream link negotiation: SuperSpeed is disabled downstream when upstream connects only to USB 2.0 hosts; both SuperSpeed and high-speed are disabled if upstream connects only to full-/low-speed hosts. Battery charging logic is hardware-assisted via dedicated BATENx pins and register-controlled ACP/DCP/CDP state machines, with automatic mode sequencing triggered on upstream disconnect.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Speed Support | USB 3.2 x1 Gen1 (5 Gbps) + USB 2.0 (480 Mbps HS / 12 Mbps FS / 1.5 Mbps LS) |
| Port Count | 1 upstream + 4 downstream ports, all supporting simultaneous SuperSpeed and USB 2.0 signaling |
| Power Management | Per-port or ganged power switching with dedicated PWRCTLx/BATENx and OVERCURxz pins |
| Battery Charging Modes | CDP (upstream connected), DCP (YD/T 1591-2009 compliant), ACP1–ACP3, Galaxy Charging, auto-transition mode |
| Configuration Interface | I²C/SMBus target (100 kHz), OTP ROM, or serial EEPROM for VID/PID, port config, UUID, and string customization |
| Clock Input | Single 24 MHz crystal or oscillator; no external clock synthesis required |
| Operating Temperature | 0°C to 70°C (commercial grade); RGC package supports reflow-compatible PCB assembly |
Pinout & Package
64-pin VQFN (RGC) package, 9 mm × 9 mm body with exposed thermal pad (VSS). Pin pitch: 0.5 mm. RoHS-compliant, moisture sensitivity level (MSL) 3.
| 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 signals from host; internal termination enabled by default |
| PWRCTL1–PWRCTL4 / BATEN1–BATEN4 | Downstream port power/battery enable control | Configurable active-high/low polarity; sampled at reset to initialize battery charging support per port |
| OVERCUR1z–OVERCUR4z | Downstream overcurrent detection inputs | Active-low open-drain inputs; assert low on overcurrent event to trigger port-specific or ganged shutdown |
| SCL/SMBCLK / SDA/SMBDAT | I²C/SMBus configuration interface | Supports 100 kHz read/write to EEPROM or OTP; enables runtime VID/PID, port config, and string updates |
Key Features
| Feature | Design Value |
|---|---|
| Four-port MTT USB 2.0 hub | Eliminates bandwidth bottlenecks by assigning dedicated transaction translators to each downstream port |
| Hardware-accelerated battery charging | Reduces firmware overhead via pin-strapped and register-controlled DCP/CDP/ACP handshaking without host intervention |
| Flexible power management | Enables either per-port isolation (for fault containment) or ganged control (for simplified power tree design) |
| 128-bit UUID and customizable strings | Supports device-level traceability and OEM branding via I²C EEPROM or SMBus without mask changes |
| Single 24 MHz clock input | Removes need for multiple clock sources or PLLs-simplifies layout and reduces BOM count |
Applications
| Computer Docking Stations | Industrial Monitors with USB Peripherals |
|---|---|
Use Scenario: Desktop replacement dock connecting laptop to display, keyboard, storage, and Ethernet via single USB-C/USB-A upstream link. IC Role / Device Role / Timing Role: Central USB hub managing concurrent SuperSpeed SSD access, USB 2.0 HID traffic, and charging of attached devices. Use Value: Enables full peripheral aggregation without bandwidth contention using MTT architecture and per-port power control for hot-swap safety. | Use Scenario: Factory-floor monitor integrating barcode scanner, badge reader, and service port-all powered and data-connected via one USB upstream. IC Role / Device Role / Timing Role: USB system interface hub providing isolated power delivery and YD/T 1591-2009-compliant charging to field devices. Use Value: Ensures reliable charging of legacy USB devices in unattended environments using hardware-based DCP mode and overcurrent protection. |
| Set-Top Box Peripheral Expansion | Embedded Industrial Gateway |
Use Scenario: Media box adding external HDD, IR blaster, and USB audio adapter while maintaining low-power standby compliance. IC Role / Device Role / Timing Role: Power-aware USB hub entering U1/U2 suspend states on idle ports while keeping critical links active. Use Value: Achieves <22 mA VDD current in suspend mode and supports automatic transition between ACP3→DCP for plug-and-play charger detection. | Use Scenario: Edge gateway aggregating sensor dongles, cellular modem, and configuration USB stick in sealed enclosure. IC Role / Device Role / Timing Role: Robust USB interconnect with I²C-configurable VID/PID and 128-bit UUID for secure device identity and firmware update validation. Use Value: Enables field-upgradable port behavior and unique device identification without reflashing silicon-critical for OTA lifecycle management. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB hub applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| USB2514B-AEZG | USB 2.0-only quad-port hub; no SuperSpeed support; integrated 3.3V LDO; 48-pin QFN | Lacks USB 3.2 Gen1 capability; suitable only where 480 Mbps bandwidth suffices and cost is primary constraint | Select when SuperSpeed is unnecessary and board space favors smaller package |
| TUSB8041ARGCT | Three-port USB 3.2 x1 Gen1 hub; identical feature set, package, and register map; differs only in port count | Reduces peripheral count capacity by one port; same power, charging, and configuration capabilities | Choose for compact designs requiring exactly three downstream ports and identical firmware compatibility |
Compared with USB2514B-AEZG, TUSB8042AIRGCT delivers 10× bandwidth headroom and native USB 3.2 support but requires separate 1.1V supply; versus TUSB8041ARGCT, it adds one downstream port with no trade-offs in power, configurability, or thermal performance-making it optimal for full-featured expansion hubs.
Availability
TUSB8042AIRGCT is available at Aetrix Electronics and suitable for computer docking stations, industrial monitors, set-top box peripherals, and embedded gateways requiring stable component supply, long-term manufacturability, and USB-IF compliance assurance.
Supply support for TUSB8042AIRGCT 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.
The TUSB8042A belongs to TI's USB connectivity portfolio, engineered specifically for high-reliability, multi-port USB 3.2 expansion in space-constrained commercial systems requiring seamless backward compatibility and robust charging support.
FAQ
What USB speed modes does the TUSB8042AIRGCT support on its downstream ports?
The TUSB8042AIRGCT supports USB 3.2 x1 Gen1 (5 Gbps) SuperSpeed, USB 2.0 high-speed (480 Mbps), full-speed (12 Mbps), and low-speed (1.5 Mbps) on all four downstream ports. Downstream speed capability is dynamically determined by the upstream connection: SuperSpeed is disabled if upstream connects only to USB 2.0 hosts; both SuperSpeed and high-speed are disabled if upstream connects only to full-/low-speed hosts. This behavior is enforced in hardware and requires no firmware intervention. The TUSB8042AIRGCT maintains full USB-IF compliance across all supported modes.
How does the TUSB8042AIRGCT implement battery charging for downstream devices?
The TUSB8042AIRGCT implements battery charging through hardware-supported protocols: CDP (when upstream is connected), DCP (YD/T 1591-2009 compliant when upstream is disconnected), ACP1–ACP3 divider modes, and Galaxy Charging. Configuration is controlled via dedicated BATENx pins sampled at reset and the Battery Charging Support register. Automatic mode sequences through ACP3 → ACP2 → ACP1 → DCP on upstream disconnect. The TUSB8042AIRGCT does not require host software to manage charging handshakes-enabling plug-and-play operation for chargers and portable devices.
Can the TUSB8042AIRGCT be configured without external EEPROM or OTP?
Yes-the TUSB8042AIRGCT supports pin-strapping for core features including battery charging enable/disable, power control polarity, ganged vs. per-port operation, and I²C/SMBus mode selection. All pin-strapped settings are sampled at GRSTz deassertion and directly configure corresponding bits in the Device Configuration Register. While EEPROM or OTP enables advanced customization (VID/PID, strings, UUID), basic hub functionality-including USB 3.2/2.0 operation, power switching, and charging modes-requires no external memory. The TUSB8042AIRGCT operates immediately after power-on with default register values if all configuration pins are left unconnected.
What thermal considerations apply to the TUSB8042AIRGCT in continuous 5 Gbps operation?
In sustained 5 Gbps operation with four downstream SuperSpeed devices active (U0 state), the TUSB8042AIRGCT draws up to 330 mA on VDD and 45 mA on VDD33, resulting in ~1.2 W total power dissipation. With its RθJA of 26°C/W, junction temperature rise is ~31°C above ambient-well within the 105°C max TJ limit at 70°C ambient. Effective thermal design requires soldering the exposed thermal pad (VSS) to a minimum 200 mm² copper pour with ≥4 thermal vias. The TUSB8042AIRGCT also supports U1/U2 link states to reduce power during idle periods, lowering average dissipation in real-world usage.
Does the TUSB8042AIRGCT support USB Type-C configuration channel (CC) logic?
No-the TUSB8042AIRGCT is a USB hub IC and does not integrate USB Type-C CC logic, VCONN switching, or PD message handling. It interfaces with standard USB 3.2/2.0 differential pairs (SSTX/RX, DP/DM) and assumes upstream/downstream connections are already established via external Type-C muxes or fixed connectors. CC pin management, orientation detection, and power role negotiation must be handled by a separate Type-C controller (e.g., TUSB546, TUSB320) upstream of the TUSB8042AIRGCT. The TUSB8042AIRGCT remains agnostic to physical connector type and operates identically with USB-A, USB-B, or Type-C receptacles when wired to its defined signal pins.
TUSB8042AIRGCT 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:
- -
TUSB8042AIRGCT FAQ
1.How can I place an order for TUSB8042AIRGCT through Aetrix?
Please submit a Request for Quotation (RFQ) for TUSB8042AIRGCT 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 TUSB8042AIRGCT reliable?
The price and inventory of TUSB8042AIRGCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUSB8042AIRGCT is usually 5 days.
3.What payment methods are accepted for TUSB8042AIRGCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUSB8042AIRGCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUSB8042AIRGCT?
TUSB8042AIRGCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUSB8042AIRGCT 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 TUSB8042AIRGCT?
For technical support, including TUSB8042AIRGCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUSB8042AIRGCT requirements.
6.How does Aetrix verify that TUSB8042AIRGCT is sourced from the original manufacturer or authorized distributors?
All TUSB8042AIRGCT 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 TUSB8042AIRGCT meets industry standards.
7.What is the process for return or replacement of TUSB8042AIRGCT?
All TUSB8042AIRGCT units undergo pre-shipment inspection (PSI). If there is an issue with TUSB8042AIRGCT, 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 TUSB8042AIRGCT part is unused and in its original packaging.
Return procedure for TUSB8042AIRGCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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