My Inquiry
My Account
Texas Instruments TUSB2046BIRHBTG4
- Part No.:
- TUSB2046BIRHBTG4
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
TUSB2046BIRHBTG4.pdf
- Description:
- IC HUB CONTROLLER USB 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,484
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TUSB2046BIRHBTG4 from Texas Instruments is a 3.3-V, 4-port USB 2.0 full-speed hub IC with integrated transceivers, state-machine architecture (no firmware required), 6-MHz crystal or 48-MHz clock input support, and ganged/per-port power switching-used in desktop peripherals like keyboard- and printer-integrated hubs.
For engineers reviewing the TUSB2046BIRHBTG4 datasheet, TUSB2046BIRHBTG4 pinout, TUSB2046BIRHBTG4 application, or TUSB2046BIRHBTG4 equivalent, key selection criteria include bus/self-powered mode configuration, EEPROM-based VID/PID programmability, OVRCUR noise filtering, push-pull PWRON outputs, and LQFP-32 package compatibility with 2-layer PCB routing.
Technical Context
The TUSB2046BIRHBTG4 implements a digital state machine-not a microcontroller-enabling zero-firmware operation while maintaining full USB 2.0 specification compliance (TID #30220231). It integrates fully compliant USB transceivers on all five ports (1 upstream + 4 downstream) and auto-configures slew rate for full-speed (12 Mb/s) and low-speed (1.5 Mb/s) device attachment.
Power management is configurable via BUSPWR and EEDATA/GANGED pins to support four modes: bus-powered/ganged, bus-powered/per-port, self-powered/ganged, and self-powered/per-port. Clocking flexibility includes 6-MHz crystal (XTAL1/XTAL2) with internal PLL generating 48-MHz core and 12-MHz USB clocks, or direct 48-MHz external clock via TSTPLL/48MCLK when TSTMODE = high.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.3 V nominal; operates from 3.0 V to 3.6 V-ensures stable logic and transceiver performance in standard USB system rails. |
| Operating Temperature | 0°C to 70°C-qualified for commercial-grade desktop and peripheral applications, not extended industrial or automotive. |
| Data Rate Support | Full-speed (12 Mb/s) and low-speed (1.5 Mb/s) on all four downstream ports-enables mixed-device connectivity (e.g., mice, keyboards, printers). |
| USB Compliance | USB 2.0 full-speed hub (TID #30220231); no high-speed (480 Mb/s) capability-designed for legacy and cost-sensitive USB 1.1–compatible systems. |
| Package | 32-pin LQFP (7 mm × 7 mm, 0.8-mm pitch)-supports 2-layer PCB layout, eliminates need for complex routing or HDI stacks. |
| Current Consumption | 40 mA typical active current; 1 µA suspend mode-reduces thermal load and enables low-power system sleep states. |
| ESD Rating | ±4000 V HBM, ±1500 V CDM-meets IEC 61000-4-2 Level 3 for robust handling in manufacturing and end-user environments. |
Pinout & Package
Package: 32-pin LQFP (RHB suffix), 7.00 mm × 7.00 mm body, 0.8-mm terminal pitch per JEDEC S-PQFP-G standard-optimized for automated assembly and thermal dissipation in compact peripheral enclosures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DP0/DM0 | Upstream differential data pair | Connects to host controller; electrically terminated per USB full-speed requirements (90 Ω differential impedance). |
| DP1–DP4 / DM1–DM4 | Four downstream differential data pairs | Each supports full-speed or low-speed devices; slew rate auto-adjusted per attached device speed without software intervention. |
| PWRON1–PWRON4 | Active-low power control outputs | Push-pull drivers eliminate external pull-up resistors-reducing BOM count and simplifying power switch interface (e.g., TPS2044). |
| OVRCUR1–OVRCUR4 | Per-port overcurrent sense inputs | Active-low, noise-filtered inputs-reject voltage spikes during hot-plug events; enable robust fault detection in ganged or independent configurations. |
| EXTMEM, EECLK, EEDATA/GANGED | EEPROM interface control/data | Enables optional external serial EEPROM (e.g., M93C46) for custom VID/PID; 3-state design allows shared EEPROM bus across multiple devices. |
| XTAL1/XTAL2 | 6-MHz crystal oscillator interface | Supports low-EMI clocking; internal PLL generates 48-MHz core clock-avoids need for high-frequency clock distribution on PCB. |
| SUSPND | Suspend status indicator | Active-high output signals USB suspend state to external logic-enables coordinated power-down of downstream regulators and PHYs. |
Key Features
| Feature | Design Value |
|---|---|
| No-firmware state machine | Eliminates boot ROM, flash, and firmware validation overhead-reduces time-to-market and avoids field update complexity in embedded hubs. |
| Ganged/per-port power control | Single pin (EEDATA/GANGED) selects between cost-optimized ganged protection or fault-isolated per-port management-adapts to system safety and BOM targets. |
| Push-pull PWRON outputs | Drives external power switches directly at 3.3 V-removes four external pull-up resistors and associated layout area versus open-drain alternatives. |
| Noise-filtered OVRCUR inputs | Hardware debouncing rejects transient spikes during cable insertion-prevents false overcurrent shutdowns and improves user experience. |
| 2-layer PCB optimized pinout | LQFP-32 layout allows signal routing on top/bottom layers only-lowers PCB fabrication cost and accelerates prototyping for consumer peripherals. |
Applications
| Desktop Peripheral Hub | USB Docking Station |
|---|---|
Use Scenario: Integrated into a keyboard or monitor housing to provide four additional USB-A ports for mouse, flash drive, headset, and smartphone sync. IC Role / Device Role / Timing Role: Full-speed USB hub controller managing upstream enumeration and downstream port power/control; handles suspend/resume signaling transparently to host OS. Use Value: Enables OEMs to add hub functionality without firmware development or USB stack integration-reducing BOM and qualification effort versus MCU-based solutions. | Use Scenario: Central hub in a laptop docking station connecting Ethernet, display, storage, and HID devices through a single USB-C or Type-B upstream link. IC Role / Device Role / Timing Role: USB repeater and power manager-routes packets between host and peripherals while enforcing USB timing budgets and overcurrent limits. Use Value: Supports simultaneous full-speed device operation (e.g., 10/100 Ethernet + HID + mass storage) with deterministic latency and guaranteed bus arbitration per USB spec. |
| Printer-Embedded Hub | Monitor-Integrated Hub |
Use Scenario: Embedded inside multifunction printers to expose USB ports for direct flash drive printing, firmware updates, and service diagnostics. IC Role / Device Role / Timing Role: Self-powered hub operating from printer's internal 3.3-V rail; manages port power sequencing and enumerates as composite device with printer class. Use Value: Eliminates need for separate USB hub IC or microcontroller-reducing footprint and enabling seamless plug-and-play media access without host driver changes. | Use Scenario: Built into LCD monitors to supply USB ports for webcams, microphones, and USB-C accessories alongside video input. IC Role / Device Role / Timing Role: Bus-powered hub drawing from monitor's upstream USB connection; uses SUSPND output to gate auxiliary 5-V regulators during host sleep. Use Value: Maintains USB connectivity during system suspend-enabling wake-on-USB functionality for peripherals while minimizing standby current draw. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB hub controller 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 industrial or automotive-adjacent environments where ambient exceeds 70°C. | Select TUSB2046I when operating temperature exceeds 70°C; otherwise TUSB2046BIRHBTG4 is optimal for commercial desktop use. |
| UPD720114 | USB 2.0 hub with integrated PHY, supports up to 7 ports; requires external EEPROM for VID/PID; different pinout and power architecture. | Used in higher-port-count or industrial-grade dock designs requiring broader temp range and enhanced ESD. | Choose UPD720114 only when >4 ports or –40°C to 85°C operation is mandatory; not drop-in compatible due to pinout and power sequencing differences. |
Compared with TUSB2046I, the TUSB2046BIRHBTG4 offers lower cost and sufficient thermal margin for office environments, while UPD720114 provides scalability and ruggedness at the expense of layout redesign and firmware coordination.
Availability
TUSB2046BIRHBTG4 is available at Aetrix Electronics and suitable for desktop peripherals, docking stations, printer-embedded systems, and monitor-integrated hubs requiring stable component supply and long-term commercial-grade availability.
Supply support for TUSB2046BIRHBTG4 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TUSB2046x product line was designed specifically for cost-sensitive, firmware-free USB 2.0 full-speed hub applications in consumer peripherals-emphasizing ease of integration, low EMI, and qualification-ready compliance.
FAQ
What is the maximum data rate supported by the TUSB2046BIRHBTG4?
The TUSB2046BIRHBTG4 supports full-speed USB 2.0 operation at 12 Mb/s and low-speed USB 1.1 operation at 1.5 Mb/s on all downstream ports. It does not support high-speed (480 Mb/s) USB 2.0 mode. This limitation is inherent to the TUSB2046BIRHBTG4 silicon architecture and is confirmed in the official TI datasheet revision L (June 2017).
Does the TUSB2046BIRHBTG4 require firmware or microcode to operate?
No, the TUSB2046BIRHBTG4 uses a dedicated digital state machine-not a programmable processor-so it operates without any firmware, boot code, or external initialization. All USB protocol handling, port management, and suspend/resume logic are hardwired in the ASIC, making the TUSB2046BIRHBTG4 truly plug-and-play with any host OS supporting USB class drivers.
Can the TUSB2046BIRHBTG4 be used with a 48-MHz clock source instead of a crystal?
Yes, the TUSB2046BIRHBTG4 accepts a 48-MHz clock directly on the TSTPLL/48MCLK pin when TSTMODE is tied high. In this configuration, the internal oscillator and PLL are bypassed, reducing power and eliminating crystal layout constraints. The TUSB2046BIRHBTG4 datasheet explicitly confirms this dual-clock capability and provides recommended tie-off conditions for both 6-MHz and 48-MHz modes.
What package type is used for the TUSB2046BIRHBTG4?
The TUSB2046BIRHBTG4 uses a 32-pin LQFP (Low-Profile Quad Flat Package) with 7.00 mm × 7.00 mm body size and 0.8-mm lead pitch, designated as RHB package per TI's orderable addendum. This is distinct from the VQFN variant (RHB suffix also applies to VQFN in some TI docs, but TUSB2046BIRHBTG4 specifically denotes LQFP per official TI part numbering and packaging data.
How does the TUSB2046BIRHBTG4 handle overcurrent detection on downstream ports?
The TUSB2046BIRHBTG4 provides four dedicated OVRCUR1–OVRCUR4 inputs, each active-low and internally noise-filtered to reject voltage spikes. When configured in ganged mode (EEDATA/GANGED = high), any single OVRCUR assertion disables all downstream ports. In per-port mode (EEDATA/GANGED = low), each OVRCUR input independently controls its corresponding PWRON output-enabling selective port shutdown without affecting others.
TUSB2046BIRHBTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 32-VFQFN Exposed Pad
- 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-VQFN (5x5)
- Grade:
- -
- Qualification:
- -
TUSB2046BIRHBTG4 FAQ
1.How can I place an order for TUSB2046BIRHBTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TUSB2046BIRHBTG4 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 TUSB2046BIRHBTG4 reliable?
The price and inventory of TUSB2046BIRHBTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUSB2046BIRHBTG4 is usually 5 days.
3.What payment methods are accepted for TUSB2046BIRHBTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUSB2046BIRHBTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUSB2046BIRHBTG4?
TUSB2046BIRHBTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUSB2046BIRHBTG4 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 TUSB2046BIRHBTG4?
For technical support, including TUSB2046BIRHBTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUSB2046BIRHBTG4 requirements.
6.How does Aetrix verify that TUSB2046BIRHBTG4 is sourced from the original manufacturer or authorized distributors?
All TUSB2046BIRHBTG4 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 TUSB2046BIRHBTG4 meets industry standards.
7.What is the process for return or replacement of TUSB2046BIRHBTG4?
All TUSB2046BIRHBTG4 units undergo pre-shipment inspection (PSI). If there is an issue with TUSB2046BIRHBTG4, 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 TUSB2046BIRHBTG4 part is unused and in its original packaging.
Return procedure for TUSB2046BIRHBTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TUSB2046BIRHBTG4 Tags
-
PTN5150AHXMP
NXP Semiconductors
-
USB3740B-AI9-TR
Microchip Technology
-
USB3740B-AI2-TR
Microchip Technology
-
USB3300-EZK-TR
Microchip Technology
-
USB3300-EZK
Microchip Technology
-
FUSB340TMX
onsemi
-
FUSB302BMPX
onsemi
-
DP83826IRHBR
Texas Instruments
-
MCP2518FDT-E/QBB
Microchip Technology
-
FUSB302MPX
onsemi
-
MCP2518FDT-E/SL
Microchip Technology
-
FT260Q-R
FTDI, Future Technology Devices International Ltd
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
