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Texas Instruments TUSB8042ARGCT
- Part No.:
- TUSB8042ARGCT
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
TUSB8042ARGCT.pdf
- Description:
- USB TRANSCEIVER
- Quantity:
- Payment:
- Shipping:
Inventory:575
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Product details
Overview
TUSB8042ARGCT 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, battery charging support (CDP/DCP/ACP), and 64-pin VQFN (RGC) packaging. It operates across 0°C to 70°C and enables simultaneous SuperSpeed, high-speed, full-speed, and low-speed downstream connectivity based on upstream link capability.
For engineers reviewing the TUSB8042ARGCT datasheet, TUSB8042ARGCT pinout, TUSB8042ARGCT application, or TUSB8042ARGCT equivalent, key selection criteria include USB 3.2 Gen1 hub topology, battery charging mode configuration (via pin strapping or I²C), per-port/ganged power control logic, and 24 MHz clock input compatibility.
Technical Context
The TUSB8042ARGCT implements a Multiple Transaction Translator (MTT) USB 2.0 hub with four independent transaction translators and two asynchronous endpoint buffers per translator. Its USB 3.2 x1 Gen1 interface supports U1/U2 link states and dynamic bandwidth allocation across four downstream ports.
It integrates configurable battery charging modes-CDP (upstream connected), DCP (upstream unconnected, YD/T 1591-2009 compliant), and ACP1–ACP3 auto-cycling-and supports customization via OTP ROM, I²C EEPROM, or SMBus target interface for VID/PID, port settings, and UUID provisioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Standard | USB 3.2 x1 Gen1 (5 Gbps) + USB 2.0 High-Speed (480 Mbps) with MTT architecture |
| Downstream Ports | Four configurable ports supporting SuperSpeed, high-speed, full-speed, or low-speed devices |
| Power Management | Per-port or ganged power switching with dedicated PWRCTL/BATEN and OVERCURz pins per port |
| Battery Charging | CDP, DCP (YD/T 1591-2009), Galaxy, and ACP1–ACP3 modes; automatic transition when upstream disconnected |
| Clock Input | Single 24 MHz crystal or oscillator; no external PLL required |
| Package | 64-pin VQFN (RGC), 9 mm × 9 mm, thermal pad grounded |
| Operating Temp | 0°C to 70°C (commercial grade) |
| Supply Voltages | VDD = 1.1 V ±10%, VDD33 = 3.3 V ±10% |
Pinout & Package
64-pin VQFN (RGC) package with exposed thermal pad requiring PCB ground connection. Pin count, layout, and signal assignment match TI's official RGC drawing (SLLSF93A).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| USB_SSTXP_DN1 / USB_SSTXM_DN1 | SuperSpeed TX differential pair (Port 1) | Drives 5 Gbps data to downstream Port 1; requires controlled 90 Ω differential impedance routing |
| USB_SSRXP_DN1 / USB_SSRXM_DN1 | SuperSpeed RX differential pair (Port 1) | Receives 5 Gbps data from downstream Port 1; AC-coupled with 0.1 µF capacitors |
| PWRCTL1/BATEN1 | Port 1 power/battery enable | Active-high (configurable polarity) control of downstream power switch; sampled at reset for battery charging enable |
| OVERCUR1z | Port 1 overcurrent detection | Active-low open-drain signal indicating overcurrent event; pulls low when fault detected |
| SCL/SMBCLK & SDA/SMBDAT | I²C/SMBus interface | Configurable dual-mode serial bus for EEPROM programming or host-side configuration; supports clock stretching |
| GRSTz | Global reset input | Active-low asynchronous reset that forces all internal registers to default state; must be held low ≥100 ns |
Key Features
| Feature | Design Value |
|---|---|
| Four-port USB 3.2 x1 Gen1 hub | Enables single upstream connection to drive four independent downstream USB devices at up to 5 Gbps each |
| Multiple Transaction Translator (MTT) | Eliminates USB 2.0 bandwidth contention by assigning dedicated translators per port for concurrent high-bandwidth transfers |
| Configurable battery charging modes | Supports CDP, DCP (YD/T 1591-2009), Galaxy, and ACP1–ACP3 without external circuitry-reducing BOM count in charging docks |
| Flexible configuration interface | OTP ROM, I²C EEPROM, or SMBus target allows field-updatable VID/PID, port settings, and custom strings without mask change |
| 128-bit UUID provision | Provides unique device identity for firmware authentication, secure boot, or asset tracking in industrial docking systems |
| Per-port power control | Isolates faults to individual downstream ports during overcurrent events-preserving functionality of remaining ports |
Applications
| Computer Docking Stations | USB-C Monitor Hubs |
|---|---|
Use Scenario: A compact desktop dock connects laptop via USB-C to four peripherals: SSD, keyboard, webcam, and Ethernet adapter. IC Role / Device Role / Timing Role: TUSB8042ARGCT acts as the primary USB 3.2 Gen1 hub, managing SuperSpeed traffic to the SSD while concurrently handling high-speed HID and video streams. Use Value: MTT architecture prevents bandwidth starvation between the SSD and webcam, ensuring sustained 400+ MB/s storage throughput alongside real-time 1080p video capture. | Use Scenario: A monitor embeds USB hub functionality to extend laptop connectivity through its USB-C upstream port. IC Role / Device Role / Timing Role: TUSB8042ARGCT serves as the embedded hub IC, enabling simultaneous display (Alt Mode) and peripheral expansion without host renegotiation. Use Value: Per-port power switching allows independent wake-from-suspend of keyboard/mouse while keeping SSD in low-power U1/U2 states-reducing system idle power by >15 mW. |
| Set-Top Box Expansion | Industrial Thin Client Hub |
Use Scenario: An IPTV set-top box adds USB 3.0 storage and HID support via front-panel ports. IC Role / Device Role / Timing Role: TUSB8042ARGCT provides downstream USB 3.2 Gen1 and USB 2.0 interfaces, with battery charging support for remote controls and streaming sticks. Use Value: Integrated DCP and ACP3 modes enable fast charging of USB-powered remotes and dongles-even when upstream host is powered off. | Use Scenario: A medical thin client uses USB for barcode scanner, smart card reader, and flash drive in a sealed enclosure. IC Role / Device Role / Timing Role: TUSB8042ARGCT functions as the certified, temperature-rated (0°C to 70°C) hub with traceable UUID for device identity and firmware validation. Use Value: 128-bit UUID and I²C-configurable strings support HIPAA-compliant device logging and secure peripheral pairing in regulated environments. |
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 |
|---|---|---|---|
| USB5744-AEZG-TR | Four-port USB 3.0 hub with integrated USB 2.0 PHY; no native ACP/Galaxy charging; requires external power switches | Lacks DCP compliance per YD/T 1591-2009 and automatic ACP cycling; limited battery charging flexibility | Select when cost-sensitive designs prioritize basic USB 3.0 expansion without advanced charging requirements |
| TUSB8041ARGCT | Three-port variant of same family; identical pinout except missing Port 4 signals (USB_SSTXP_DN4, etc.) and reduced register map | Lower port count reduces PCB layer count and BOM; suitable where fourth port is unnecessary | Choose for space-constrained applications needing identical feature set but only three downstream ports |
Compared with USB5744-AEZG-TR and TUSB8041ARGCT, the TUSB8042ARGCT uniquely delivers YD/T 1591-2009–compliant DCP, ACP auto-cycling, and full MTT-based USB 2.0 concurrency-making it optimal for charging-aware docking stations and regulatory-compliant consumer electronics.
Availability
TUSB8042ARGCT is available at Aetrix Electronics and suitable for computer docking stations, USB-C monitor hubs, set-top box expansion, and industrial thin client hubs requiring stable component supply, long-term lifecycle support, and commercial-grade temperature operation.
Supply support for TUSB8042ARGCT 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 broad industrial and consumer design infrastructure.
The TUSB8042ARGCT belongs to TI's USB 3.x hub product line, engineered specifically for high-reliability docking, display, and peripheral expansion systems requiring integrated battery charging and flexible configuration.
FAQ
What USB standards does the TUSB8042ARGCT support?
The TUSB8042ARGCT supports USB 3.2 x1 Gen1 (5 Gbps) and backward-compatible USB 2.0 High-Speed (480 Mbps), Full-Speed (12 Mbps), and Low-Speed (1.5 Mbps). It implements a Multiple Transaction Translator (MTT) architecture for concurrent USB 2.0 transfers and dynamically disables SuperSpeed or high-speed links when upstream conditions restrict capability-ensuring robust interoperability across host environments. This behavior is fully defined in the TUSB8042ARGCT datasheet Section 3.
How does the TUSB8042ARGCT handle battery charging on downstream ports?
The TUSB8042ARGCT supports Battery Charging Downstream Port (CDP) when upstream is connected, Dedicated Charging Port (DCP) with YD/T 1591-2009 compliance when upstream is unconnected, and Automatic Charging Port (ACP1–ACP3) modes with auto-cycling. Configuration is determined at reset via PWRCTLx/BATENx pin states or programmable registers. The TUSB8042ARGCT enables direct charging of smartphones, tablets, and accessories without external charging ICs-reducing solution size and cost in docking and monitor applications.
Can the TUSB8042ARGCT operate with only USB 2.0 downstream devices?
Yes, the TUSB8042ARGCT supports USB 2.0–only downstream operation. Its USB 2.0 MTT hub remains fully functional regardless of upstream link speed, and downstream ports can be configured via register or pin strap to disable SuperSpeed functionality. When upstream is limited to USB 2.0, the TUSB8042ARGCT automatically disables SuperSpeed transceivers to reduce power consumption while maintaining full USB 2.0 bandwidth and battery charging features-making the TUSB8042ARGCT suitable for hybrid legacy/new device ecosystems.
What configuration methods are supported by the TUSB8042ARGCT?
The TUSB8042ARGCT supports three configuration methods: OTP ROM (for factory-programmed VID/PID), I²C EEPROM (for field-updatable settings including manufacturer/product strings and serial numbers), and SMBus target interface (for runtime host-side reconfiguration). Pin strapping via FULLPWRMGMTz, GANGED, AUTOENz, and PWRCTL_POL provides hardware-level defaults for power control, charging mode, and polarity-enabling zero-software bring-up in fixed-function applications using the TUSB8042ARGCT.
What is the thermal performance of the TUSB8042ARGCT in its RGC package?
The TUSB8042ARGCT in the 64-pin RGC (VQFN) package has a junction-to-ambient thermal resistance (RθJA) of 26°C/W under standard JEDEC JESD51-7 conditions. With proper PCB layout-including a solid thermal pad connected to ≥4 thermal vias to internal ground planes-the device sustains continuous operation at full load within its 0°C to 70°C ambient range. Thermal metrics such as RθJB (5.3°C/W) and ΨJB (5.2°C/W) confirm effective heat transfer to the board, critical for fanless docking station designs relying on the TUSB8042ARGCT.
TUSB8042ARGCT 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:
- 0°C ~ 70°C (TA)
- Supplier Device Package:
- 64-VQFN (9x9)
- Grade:
- -
- Qualification:
- -
TUSB8042ARGCT FAQ
1.How can I place an order for TUSB8042ARGCT through Aetrix?
Please submit a Request for Quotation (RFQ) for TUSB8042ARGCT 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 TUSB8042ARGCT reliable?
The price and inventory of TUSB8042ARGCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUSB8042ARGCT is usually 5 days.
3.What payment methods are accepted for TUSB8042ARGCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUSB8042ARGCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUSB8042ARGCT?
TUSB8042ARGCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUSB8042ARGCT 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 TUSB8042ARGCT?
For technical support, including TUSB8042ARGCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUSB8042ARGCT requirements.
6.How does Aetrix verify that TUSB8042ARGCT is sourced from the original manufacturer or authorized distributors?
All TUSB8042ARGCT 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 TUSB8042ARGCT meets industry standards.
7.What is the process for return or replacement of TUSB8042ARGCT?
All TUSB8042ARGCT units undergo pre-shipment inspection (PSI). If there is an issue with TUSB8042ARGCT, 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 TUSB8042ARGCT part is unused and in its original packaging.
Return procedure for TUSB8042ARGCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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