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Texas Instruments TUSB2046BIVFR
- Part No.:
- TUSB2046BIVFR
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 32-LQFP
- Datasheet:
-
TUSB2046BIVFR.pdf
- Description:
- IC HUB CONTROLLER USB 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,259
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Product details
Overview
TUSB2046BIVFR from Texas Instruments is a 3.3-V, 4-port USB 2.0 full-speed hub IC with integrated transceivers, digital state-machine architecture (no firmware required), 0°C to 70°C operating temperature, and LQFP-32 package. It serves as a root-compliant upstream/downstream repeater in embedded peripheral hubs for keyboards, printers, and scanners.
For engineers reviewing the TUSB2046BIVFR datasheet, TUSB2046BIVFR pinout, TUSB2046BIVFR application, or TUSB2046BIVFR equivalent, key selection criteria include bus- vs self-powered mode configuration via BUSPWR, ganged/per-port overcurrent handling via EEDATA/GANGED, 6-MHz crystal or 48-MHz clock input flexibility, push-pull PWRON outputs eliminating external pullups, and EEPROM-programmable VID/PID support.
Technical Context
The TUSB2046BIVFR implements a hardware-based USB hub controller using a digital state machine-not a microcontroller-ensuring deterministic timing and zero firmware overhead. All five USB ports (1 upstream + 4 downstream) integrate fully compliant transceivers with automatic slew-rate adaptation for both full-speed (12 Mbps) and low-speed (1.5 Mbps) device attachment.
Power management is configurable via BUSPWR (bus/self-powered mode) and GANGED (ganged/per-port overcurrent detection), with push-pull PWRON outputs driving external power switches and noise-filtered OVRCUR inputs enabling robust fault reporting. Clocking supports either a 6-MHz crystal (XTAL1/XTAL2) with internal PLL generating 48-MHz core timing, or direct 48-MHz clock injection via TSTPLL/48MCLK when TSTMODE = high.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Compliance | Full-speed hub per USB 1.1 spec (TID #30220231); no low-speed enumeration limitations |
| Ports | 1 upstream + 4 downstream USB ports; all downstream ports support full-speed and low-speed devices |
| Supply Voltage | 3.3 V ±10%; operates at 3.0–3.6 V - enables direct connection to standard 3.3-V LDOs without level shifting |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade desktop, docking station, and peripheral applications |
| Package | LQFP-32 (7 mm × 7 mm, 0.8-mm pitch) - supports 2-layer PCB routing and standard reflow assembly |
| Current Consumption | 40 mA typical active; 1 µA suspend - enables low-power system sleep states without external power gating |
| Clock Options | 6-MHz crystal (XTAL1/XTAL2) with internal PLL or 48-MHz external clock (TSTPLL/48MCLK) - eliminates need for high-frequency oscillator |
Pinout & Package
LQFP-32 package (JEDEC S-PQFP-G), 7.00 mm × 7.00 mm body, 0.8-mm terminal pitch, exposed thermal pad not present - compatible with standard QFP footprint and automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DP0/DM0 | Upstream differential data pair | Connects directly to host controller's USB upstream port; requires 90-Ω differential impedance routing |
| DP1–DP4 / DM1–DM4 | Downstream differential data pairs (x4) | Each pair drives one USB Type-A port; auto-scales slew rate for full/low-speed device detection |
| PWRON1–PWRON4 | Active-low port power control outputs | Push-pull drivers eliminate external pullup resistors; interface directly with TI TPS2044 or equivalent load switches |
| OVRCUR1–OVRCUR4 | Active-low per-port overcurrent sense inputs | Noise-filtered TTL inputs; tied together in ganged mode or used individually for fault-isolated port shutdown |
| BUSPWR | Power source mode select | High = bus-powered (VCC sourced from USB VBUS); low = self-powered (local 3.3-V supply) |
| EEDATA/GANGED | Configurable I/O: EEPROM data or ganged-mode control | When EXTMEM = 0 → EEPROM data line; when EXTMEM = 1 → selects ganged (high) or per-port (low) overcurrent behavior |
| EXTMEM | EEPROM interface enable | Low = enables EECLK/EEDATA pins for VID/PID loading from external serial EEPROM; high = disables EEPROM, repurposes pin 6 as GANGED |
| XTAL1/XTAL2 | 6-MHz crystal interface | XTAL1 = input; XTAL2 = output; supports fundamental-mode crystals only - no overtone operation |
| TSTMODE / TSTPLL/48MCLK | Clock source selection interface | TSTMODE low → 6-MHz crystal mode; TSTMODE high → 48-MHz clock injected on TSTPLL/48MCLK pin |
| SUSPND | Suspend status indicator | Active-high open-drain 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 memory, and boot-time delays - reduces BOM cost and qualification time |
| Push-pull PWRON outputs | Removes requirement for four external 10-kΩ pullup resistors - simplifies layout and improves port power-up timing consistency |
| Noise-filtered OVRCUR inputs | Prevents false overcurrent trips from ESD or transient coupling - increases system reliability in noisy industrial environments |
| 3-state EEPROM interface | Enables shared EEPROM bus across multiple TUSB2046BIVFR devices or other peripherals - reduces component count in multi-hub systems |
| 2-layer PCB-optimized pinout | Allows complete signal routing without buried vias or microvias - lowers manufacturing cost and improves yield in high-volume production |
Applications
| Desktop Peripheral Hub | Industrial Docking Station |
|---|---|
Use Scenario: Integrates keyboard, mouse, printer, and scanner into single USB upstream connection on office PCs. IC Role / Device Role / Timing Role: Acts as transparent USB repeater with automatic speed negotiation and suspend/resume signaling. Use Value: Enables plug-and-play compatibility with Windows/macOS/Linux without driver installation; supports simultaneous full-speed (printer) and low-speed (keyboard) devices. | Use Scenario: Provides expandable USB connectivity for ruggedized field tablets used in warehouse logistics and factory floor HMIs. IC Role / Device Role / Timing Role: Serves as fault-tolerant hub with per-port overcurrent protection and SUSPND-driven system sleep coordination. Use Value: Prevents single-port short-circuit from disabling entire peripheral tree; maintains USB enumeration integrity after repeated hot-plug cycles. |
| Embedded Monitor Hub | USB Audio Interface Hub |
Use Scenario: Adds USB-A ports to smart monitors for connecting webcams, flash drives, and HID devices alongside video input. IC Role / Device Role / Timing Role: Functions as self-powered hub (BUSPWR = low) with local 3.3-V regulation, managing power delivery and enumeration independently of display controller. Use Value: Decouples USB functionality from monitor's main SoC - avoids firmware updates and enables independent compliance certification. | Use Scenario: Aggregates microphone array, headphone DAC, and MIDI controller into single USB audio class interface for podcasting workstations. IC Role / Device Role / Timing Role: Provides isolated downstream ports with precise suspend/resume timing to prevent audio dropouts during system sleep/wake transitions. Use Value: Maintains USB Audio Class 1.0 timing alignment across all connected devices; eliminates clock domain conflicts between analog and digital audio paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB hub applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TUSB2046I | Extended temperature range (–40°C to 85°C); identical pinout, electrical specs, and feature set | Required for automotive infotainment head units or outdoor kiosks where ambient temperature exceeds 70°C | Select TUSB2046I when industrial or extended-temperature operation is mandatory; otherwise TUSB2046BIVFR suffices for commercial use. |
| USB2422 | Integrated 5-V power switches; no external load switches needed; supports USB 2.0 high-speed (480 Mbps) upstream | Targeted at cost-sensitive consumer electronics where board space and BOM count are critical constraints | Choose USB2422 only if high-speed upstream bandwidth or integrated power switching is required; TUSB2046BIVFR remains optimal for full-speed-only, high-reliability designs. |
Compared with TUSB2046I, the TUSB2046BIVFR trades extended temperature tolerance for lower unit cost and qualification lead time; compared with USB2422, it offers superior ESD robustness (±4 kV HBM), deterministic state-machine timing, and proven field reliability in multi-year deployments - making it preferred for industrial and infrastructure applications.
Availability
TUSB2046BIVFR is available at Aetrix Electronics and suitable for desktop peripheral hubs, industrial docking stations, and embedded monitor interfaces requiring stable component supply, long-lifecycle support, and TI-qualified commercial-grade performance.
Supply support for TUSB2046BIVFR 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 technologies, with leadership in industrial, automotive, and communications markets.
The TUSB2046BIVFR belongs to TI's USB physical layer (PHY) and hub portfolio, designed specifically for cost-effective, firmware-free USB expansion in commercial computing and peripheral equipment.
FAQ
What is the maximum operating temperature for the TUSB2046BIVFR?
The TUSB2046BIVFR is rated for 0°C to 70°C operating free-air temperature. This commercial-grade specification aligns with typical desktop, office peripheral, and embedded monitor environments. For applications requiring –40°C to 85°C operation, the pin-compatible TUSB2046I variant must be selected instead of the TUSB2046BIVFR.
Does the TUSB2046BIVFR require external firmware or software drivers?
No, the TUSB2046BIVFR uses a digital state-machine implementation - not a microcontroller - so no firmware programming is required. It enumerates as a standard USB hub class device and works seamlessly with any OS that supports the USB stack (Windows, macOS, Linux, Android) without custom drivers. The TUSB2046BIVFR handles all USB protocol timing, packet parsing, and retry logic in hardware.
Can the TUSB2046BIVFR support both bus-powered and self-powered configurations?
Yes, the TUSB2046BIVFR supports both modes via the BUSPWR pin: pulled high for bus-powered operation (drawing VBUS power for logic and downstream port switching), or pulled low for self-powered operation (using local 3.3-V supply for logic while downstream ports draw from separate 5-V rail). Configuration is static at power-on and must not change dynamically during operation.
How does the TUSB2046BIVFR handle overcurrent protection on downstream ports?
The TUSB2046BIVFR provides overcurrent detection through four dedicated OVRCUR1–OVRCUR4 inputs (active-low, noise-filtered). When configured in ganged mode (EEDATA/GANGED = high), any single OVRCUR assertion shuts down all four PWRON outputs. In per-port mode (EEDATA/GANGED = low), each OVRCUR controls its corresponding PWRON - enabling selective port disable without affecting others. External power switches (e.g., TPS2044) are required to execute the actual current cutoff.
What clock sources are supported by the TUSB2046BIVFR?
The TUSB2046BIVFR supports two clock options: a 6-MHz fundamental crystal connected to XTAL1/XTAL2 (with internal PLL generating 48-MHz core timing), or a 48-MHz external clock applied to TSTPLL/48MCLK when TSTMODE is held high. Crystal operation requires TSTMODE = low and TSTPLL/48MCLK = ground; oscillator operation requires TSTMODE = high and XTAL1 = VCC. A crystal cannot be used in 48-MHz mode due to internal oscillator cell limitations.
TUSB2046BIVFR 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:
- -40°C ~ 85°C
- Supplier Device Package:
- 32-LQFP (7x7)
- Grade:
- -
- Qualification:
- -
TUSB2046BIVFR FAQ
1.How can I place an order for TUSB2046BIVFR through Aetrix?
Please submit a Request for Quotation (RFQ) for TUSB2046BIVFR 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 TUSB2046BIVFR reliable?
The price and inventory of TUSB2046BIVFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUSB2046BIVFR is usually 5 days.
3.What payment methods are accepted for TUSB2046BIVFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUSB2046BIVFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUSB2046BIVFR?
TUSB2046BIVFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUSB2046BIVFR 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 TUSB2046BIVFR?
For technical support, including TUSB2046BIVFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUSB2046BIVFR requirements.
6.How does Aetrix verify that TUSB2046BIVFR is sourced from the original manufacturer or authorized distributors?
All TUSB2046BIVFR 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 TUSB2046BIVFR meets industry standards.
7.What is the process for return or replacement of TUSB2046BIVFR?
All TUSB2046BIVFR units undergo pre-shipment inspection (PSI). If there is an issue with TUSB2046BIVFR, 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 TUSB2046BIVFR part is unused and in its original packaging.
Return procedure for TUSB2046BIVFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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