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Texas Instruments TUSB2046BVFRG4
- Part No.:
- TUSB2046BVFRG4
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 32-LQFP
- Datasheet:
-
TUSB2046BVFRG4.pdf
- Description:
- IC HUB CONTROLLER USB 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,494
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Product details
Overview
TUSB2046BVFRG4 from Texas Instruments is a 3.3-V, full-speed USB 2.0 hub IC implementing a digital state machine (no firmware required), with one upstream port and four downstream ports supporting both full-speed (12 Mbps) and low-speed (1.5 Mbps) USB devices, integrated transceivers, and ganged/per-port power switching - deployed in computer docking stations, keyboard/printer hubs, and monitor-integrated USB expansion.
For engineers reviewing the TUSB2046BVFRG4 datasheet, TUSB2046BVFRG4 pinout, TUSB2046BVFRG4 application, or TUSB2046BVFRG4 equivalent, key selection criteria include bus- vs self-powered mode configuration via BUSPWR, EEPROM-programmable VID/PID support, 6-MHz crystal or 48-MHz clock input flexibility, push-pull PWRON outputs eliminating external pullups, and noise-filtered OVRCUR inputs for robust overcurrent detection.
Technical Context
The TUSB2046BVFRG4 implements USB 2.0 full-speed hub functionality using hardwired digital logic-not a microcontroller-ensuring deterministic timing and zero firmware overhead. Its integrated transceivers comply with USB electrical specifications for both upstream and all four downstream ports, automatically adapting slew rate based on attached device speed.
Power management is configurable via BUSPWR (bus/self-powered mode) and EEDATA/GANGED (ganged vs per-port overcurrent reporting), while clocking supports either a 6-MHz crystal (XTAL1/XTAL2) with internal PLL generating 48 MHz/12 MHz, or direct 48-MHz clock injection via TSTPLL/48MCLK when TSTMODE = high-enabling low-EMI operation or system-level clock synchronization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Compliance | Full-speed hub per USB 2.0 spec; TID #30220231 certified; no low-speed enumeration issues due to automatic slew-rate adaptation |
| Supply Voltage | 3.3 V nominal (3.0–3.6 V); enables direct interface with 3.3-V logic without level shifters |
| Operating Temperature | 0°C to 70°C; validated for commercial desktop and peripheral applications |
| Data Rates | Full-speed: 12 Mbps; Low-speed: 1.5 Mbps; differential driver rise/fall times ≤20 ns (FS) and ≤300 ns (LS) |
| ESD Rating | ±4000 V HBM; ±1500 V CDM; meets industrial handling requirements without additional protection circuitry |
| Current Consumption | 40 mA active; 1 μA suspend mode; enables USB suspend/resume compliance with minimal system power impact |
| Package | VQFN-32 (5.0 mm × 5.0 mm, 0.5-mm pitch); thermal pad improves PCB heat dissipation; 2-layer routing compatible |
Pinout & Package
VQFN-32 package (5.0 mm × 5.0 mm body, 0.5-mm pin pitch) with exposed thermal pad; optimized for compact USB hub designs requiring low EMI and simplified layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DP0/DM0 | Upstream differential data pair | Connects directly to host controller; requires 90-Ω differential impedance trace routing |
| DP1–DP4 / DM1–DM4 | Four downstream differential data pairs | Each pair supports full-speed or low-speed devices; auto-slew-rate selection eliminates manual configuration |
| PWRON1–PWRON4 | Active-low power control outputs | Push-pull drivers eliminate external pullup resistors; interface directly with TI TPS2044 or similar 5-V power switches |
| OVRCUR1–OVRCUR4 | Active-low overcurrent sense inputs | Noise-filtered inputs tolerate voltage spikes; enable reliable fault detection without external RC filtering |
| EXTMEM, EECLK, EEDATA/GANGED | EEPROM interface control | When EXTMEM = low, enables external M93C46-compatible EEPROM for custom VID/PID; 3-state design allows shared bus usage |
| XTAL1/XTAL2 | 6-MHz crystal interface | Supports fundamental-mode crystals only; internal PLL generates 48-MHz core clock and 12-MHz USB clock |
| TSTMODE / TSTPLL/48MCLK | Clock source selection | TSTMODE = high selects 48-MHz external clock; bypasses internal oscillator and PLL for deterministic timing sync |
| SUSPND | Suspend status indicator | Active-high output signals USB suspend state to external logic for system-level power-down coordination |
Key Features
| Feature | Design Value |
|---|---|
| Digital state machine architecture | Eliminates firmware development, flash programming, and qualification overhead; ensures deterministic USB enumeration timing |
| Ganged or per-port power management | Configurable via EEDATA/GANGED pin; enables cost-optimized (ganged) or fault-isolated (per-port) hub designs |
| Push-pull PWRON outputs | Removes need for 10-kΩ pullup resistors on each PWRON line; reduces BOM count and board space in 4-port implementations |
| Noise-filtered OVRCUR inputs | Internal filtering rejects transient spikes on 5-V power rails; prevents false overcurrent shutdown during hot-plug events |
| 6-MHz crystal + internal PLL | Achieves low-EMI operation while generating precise 48-MHz and 12-MHz clocks; avoids external oscillator component |
| 3.3-V single-supply operation | Interfaces natively with modern SoC I/O; eliminates level-shifter ICs and associated signal integrity concerns |
Applications
| Desktop Docking Station | USB Peripheral Hub (Keyboard/Printer) |
|---|---|
Use Scenario: A compact docking station connects laptop to multiple peripherals including monitor, external SSD, and Ethernet adapter via a single USB-C/USB-A upstream link. IC Role / Device Role / Timing Role: TUSB2046BVFRG4 acts as the full-speed USB repeater hub, managing traffic between host and up to four downstream full-speed devices while maintaining strict USB frame timing. Use Value: Enables seamless plug-and-play without driver installation; supports simultaneous full-speed storage and HID traffic with guaranteed bandwidth allocation per port. | Use Scenario: Integrated into a mechanical keyboard housing to provide four additional USB-A ports for mouse, headset, flash drive, and smartphone charging. IC Role / Device Role / Timing Role: TUSB2046BVFRG4 serves as a self-powered hub (BUSPWR = low), delivering stable 5-V power to downstream devices via external TPS2044 switches controlled by PWRON outputs. Use Value: Eliminates need for separate hub dongle; provides per-port overcurrent protection (GANGED = low) to prevent keyboard reset during cable short events. |
| Monitor-Embedded USB Hub | Industrial Scanner/Modem Interface |
Use Scenario: Built into a 27-inch display to extend USB connectivity from the connected PC to peripherals placed near the monitor (webcam, mic, USB hub). IC Role / Device Role / Timing Role: TUSB2046BVFRG4 operates in bus-powered mode (BUSPWR = high), drawing power from upstream USB link while providing regulated 5-V outputs to downstream ports. Use Value: Reduces cable clutter; maintains USB suspend/resume transparency so monitor sleep/wake triggers peripheral power states correctly. | Use Scenario: Used in a medical document scanner or cellular modem enclosure to add USB connectivity for firmware updates, data transfer, and host control. IC Role / Device Role / Timing Role: TUSB2046BVFRG4 functions as a robust, ESD-hardened hub (±4000 V HBM) in electrically noisy environments, with SUSPND output coordinating system-level low-power modes. Use Value: Ensures reliable enumeration under EMI stress; supports both low-speed (scanner buttons) and full-speed (image transfer) operation without reconfiguration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB hub applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UPD720114GA | USB 2.0 hub with integrated 5-V regulator; requires no external power switches; higher integration but fixed VID/PID | Reduces external component count but lacks EEPROM programmability and ganged/per-port flexibility | Select UPD720114GA when minimizing BOM and layout area is critical, and custom VID/PID is unnecessary |
| TUSB2036VFR | 3-port variant of same family; identical architecture, pinout, and feature set except for reduced port count and different package (VQFN-24) | Lower port density suits space-constrained applications like compact keyboards or embedded controllers | Select TUSB2036VFR when exactly three downstream ports are needed and PCB real estate is limited |
Compared with UPD720114GA and TUSB2036VFR, the TUSB2046BVFRG4 uniquely balances 4-port density, EEPROM-based VID/PID customization, flexible power management modes, and proven field reliability in commercial docking and peripheral systems - making it optimal for designs requiring configurability and long-term supply stability.
Availability
TUSB2046BVFRG4 is available at Aetrix Electronics and suitable for desktop docking stations, monitor-embedded USB expansion, and industrial peripheral interfaces requiring stable component supply, long-lifecycle support, and TI-qualified USB compliance.
Supply support for TUSB2046BVFRG4 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 specializing in analog, embedded processing, and connectivity solutions, with decades of USB protocol expertise and broad automotive/industrial qualification.
The TUSB2046x product line delivers cost-optimized, firmware-free USB 2.0 hub ICs targeting commercial and industrial peripheral equipment where reliability, low EMI, and minimal system integration effort are critical design goals.
FAQ
What USB speed modes does the TUSB2046BVFRG4 support?
The TUSB2046BVFRG4 supports both full-speed (12 Mbps) and low-speed (1.5 Mbps) USB 2.0 operation on all four downstream ports. It automatically detects device speed and adjusts slew rate accordingly - no software or register configuration is required. The upstream port operates exclusively in full-speed mode to maintain compatibility with host controllers. This dual-speed capability ensures backward compatibility with legacy HID devices while supporting modern full-speed peripherals.
Does the TUSB2046BVFRG4 require external firmware or microcode?
No, the TUSB2046BVFRG4 does not require external firmware or microcode. It uses a dedicated digital state machine implementation that handles all USB protocol layers - including enumeration, transaction scheduling, and error recovery - in hardware. This eliminates the need for flash memory, bootloader development, and firmware validation, reducing time-to-market and improving long-term reliability compared to MCU-based hub solutions.
How is power management configured on the TUSB2046BVFRG4?
Power management on the TUSB2046BVFRG4 is configured using two pins: BUSPWR selects bus-powered (high) or self-powered (low) mode, while EEDATA/GANGED determines ganged (high) or per-port (low) overcurrent reporting. In ganged mode, any OVRCUR activation disables all downstream ports; in per-port mode, only the affected port powers down. External power switches (e.g., TPS2044) must be used to implement 5-V power delivery based on PWRON outputs.
Can the TUSB2046BVFRG4 use a 48-MHz clock instead of a crystal?
Yes, the TUSB2046BVFRG4 supports direct 48-MHz clock injection via the TSTPLL/48MCLK pin when TSTMODE is held high. In this configuration, the internal oscillator and PLL are bypassed, reducing power consumption and enabling synchronization with system-level clocks. XTAL2 must be left floating, and a crystal cannot be used - only an external oscillator or clock generator meeting TTL/LVCMOS levels is valid.
What EEPROM is compatible with the TUSB2046BVFRG4 for custom VID/PID?
The TUSB2046BVFRG4 supports Microwire-compatible serial EEPROMs such as the SGS-Thomson M93C46 or equivalents (e.g., STMicroelectronics M95040, ON Semiconductor CAT93C46). The EEPROM must support automatic address increment and 16-bit word organization. When EXTMEM = low, the TUSB2046BVFRG4 performs a one-time read of three 16-bit words: GANGED configuration (address 0x00), VID (0x01), and PID (0x02).
TUSB2046BVFRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 32-LQFP
- Programmable:
- Not Verified
- Protocol:
- USB
- Function:
- Hub Controller
- Interface:
- USB
- Standards:
- USB 2.0
- Voltage - Supply:
- 3V ~ 3.6V
- Current - Supply:
- 40mA
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 32-LQFP (7x7)
- Grade:
- -
- Qualification:
- -
TUSB2046BVFRG4 FAQ
1.How can I place an order for TUSB2046BVFRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TUSB2046BVFRG4 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 TUSB2046BVFRG4 reliable?
The price and inventory of TUSB2046BVFRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUSB2046BVFRG4 is usually 5 days.
3.What payment methods are accepted for TUSB2046BVFRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUSB2046BVFRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUSB2046BVFRG4?
TUSB2046BVFRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUSB2046BVFRG4 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 TUSB2046BVFRG4?
For technical support, including TUSB2046BVFRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUSB2046BVFRG4 requirements.
6.How does Aetrix verify that TUSB2046BVFRG4 is sourced from the original manufacturer or authorized distributors?
All TUSB2046BVFRG4 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 TUSB2046BVFRG4 meets industry standards.
7.What is the process for return or replacement of TUSB2046BVFRG4?
All TUSB2046BVFRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TUSB2046BVFRG4, 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 TUSB2046BVFRG4 part is unused and in its original packaging.
Return procedure for TUSB2046BVFRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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