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Texas Instruments TUSB2046BIRHBRQ1
- Part No.:
- TUSB2046BIRHBRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
TUSB2046BIRHBRQ1.pdf
- Description:
- IC HUB CONTROLLER USB 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,781
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Product details
Overview
TUSB2046BIRHBRQ1 from Texas Instruments is an AEC-Q100 qualified 4-port USB 2.0 full-speed hub IC for automotive infotainment systems, featuring one upstream port and four downstream ports, integrated USB transceivers, 3.3-V operation, and ganged/per-port power switching control via PWRON/OVRCUR signals.
For engineers reviewing the TUSB2046BIRHBRQ1 datasheet, TUSB2046BIRHBRQ1 pinout, TUSB2046BIRHBRQ1 application, or TUSB2046BIRHBRQ1 equivalent, key selection criteria include USB-IF TID #30220231 compliance, 6-MHz crystal–based low-EMI clocking, EEPROM-programmable VID/PID support, and automotive-grade ESD robustness (±3000 V HBM).
Technical Context
The TUSB2046BIRHBRQ1 implements a hardware state machine-not firmware-enabling zero-host-driver dependency and seamless integration with any USB stack. It supports both full-speed (12 Mb/s) and low-speed (1.5 Mb/s) downstream devices via automatic slew-rate adaptation per port.
Its dual-clock architecture allows either 6-MHz crystal + internal APLL (for suspend/resume capability) or direct 48-MHz external clock input; TSTMODE pin selects mode. EXTMEM pin configures EEPROM interface (EECLK/EEDATA) or repurposes pin 6 as GANGED control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Compliance | Full-speed hub per USB 2.0 spec; USB-IF TID #30220231 certified |
| Operating Voltage | 3.3 V nominal supply (3.3–3.6 V); no 5-V I/O tolerance |
| Data Rates | Full-speed: 12 Mb/s; Low-speed: 1.5 Mb/s; auto-sensing per downstream port |
| ESD Rating | ±3000 V HBM (AEC Q100-002), ±2000 V CDM (AEC Q100-011) |
| Temperature Range | –40°C to +85°C ambient; qualified for automotive applications |
| Package | 32-pin VQFN (RHB), 5.0 mm × 5.0 mm, 0.5-mm pitch, exposed thermal pad |
| Power Modes | Bus-powered or self-powered; configurable via BUSPWR pin |
Pinout & Package
32-pin VQFN (RHB) package with 5.0 mm × 5.0 mm body, 0.5-mm pitch, and exposed thermal pad for thermal management in automotive environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DP0/DM0 | Upstream differential data pair | Connects to host controller; full-speed/low-speed compatible |
| DP1–DP4 / DM1–DM4 | Downstream differential data pairs | Four independent USB ports; each supports auto-slew rate selection |
| PWRON1–PWRON4 | Active-low power-control outputs | Push-pull drivers eliminate external pullups; interface with TPS2044-type switches |
| OVRCUR1–OVRCUR4 | Active-low overcurrent inputs | Noise-filtered; enable per-port or ganged fault reporting |
| EXTMEM | EEPROM interface enable | Low = enables EECLK/EEDATA; high = disables EEPROM, repurposes pin 6 as GANGED |
| TSTMODE | Clock source select | Low = 6-MHz crystal + APLL; high = bypass APLL, use 48-MHz external clock |
| BUSPWR | Power-source mode indicator | High = bus-powered; low = self-powered; static configuration only |
| SUSPND | Suspend status output | Active-high signal for external logic power-down during USB suspend |
Key Features
| Feature | Design Value |
|---|---|
| State-machine architecture | Zero firmware requirement; eliminates boot-time delays and host driver dependencies |
| Ganged/per-port power control | Configurable via GANGED input; reduces BOM count or improves fault isolation |
| Integrated EEPROM interface | Supports M93C46-compatible serial EEPROM for VID/PID/GANGED storage at power-on reset |
| Low-EMI 6-MHz crystal option | Internal APLL generates 48-MHz core clock; enables suspend/resume without oscillator stop limitations |
| Automotive qualification | AEC-Q100 Grade 2 (–40°C to +105°C junction), HBM ±3000 V, production-tested reliability |
| Push-pull PWRON outputs | Eliminates external pullup resistors; simplifies PCB layout and improves drive strength vs open-drain |
Applications
| Automotive Infotainment Hub | USB-CarPlay Interface Module |
|---|---|
Use Scenario: Central head unit connecting USB peripherals (phone, flash drive, camera) in vehicles with strict EMI and temperature requirements. IC Role / Device Role / Timing Role: Full-speed USB hub managing upstream host link and four downstream device links; handles suspend/resume signaling and power sequencing. Use Value: AEC-Q100 qualification ensures operation across –40°C to +85°C; ±3000 V HBM ESD protects against in-vehicle electrostatic discharge events. |
Use Scenario: Embedded CarPlay adapter requiring plug-and-play USB enumeration with custom vendor/product IDs. IC Role / Device Role / Timing Role: USB hub with EEPROM-loaded VID/PID enabling branded device recognition in iOS without driver updates. Use Value: EXTMEM-controlled EEPROM interface allows field-programmable descriptors; eliminates re-spin for branding changes. |
| Telematics Control Unit (TCU) | Diagnostic Over USB (DoIP) Gateway |
Use Scenario: TCU aggregating GPS, cellular, and CAN data, exposing USB interface for firmware updates and diagnostics. IC Role / Device Role / Timing Role: Self-powered hub providing isolated, overcurrent-protected downstream ports for service tools and update dongles. Use Value: BUSPWR + GANGED configuration enables robust per-port power management; OVRCUR filtering prevents false trips from transient noise. |
Use Scenario: DoIP gateway bridging Ethernet diagnostics to legacy USB service tools in workshop environments. IC Role / Device Role / Timing Role: Bus-powered hub relaying USB control transfers and bulk data between diagnostic PC and vehicle ECU. Use Value: 32-pin VQFN package supports two-layer PCB routing; push-pull PWRON outputs reduce component count vs open-drain alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB hub applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TUSB2046BI-Q1 | Same die, identical RHB package and pinout; differs only in tape-and-reel packaging and part marking | No functional difference; used interchangeably in automotive designs per TI documentation | Select when sourcing from TI's standard distribution channels with standard reel packaging |
| USB2422 | 2-port hub; supports USB 2.0 high-speed (480 Mb/s); requires external EEPROM for VID/PID; different pinout and power architecture | Not drop-in; requires PCB redesign and firmware validation; suited for non-automotive, high-speed applications | Choose only if high-speed bandwidth is required and AEC-Q100 qualification is not mandatory |
Compared with TUSB2046BIRHBRQ1, TUSB2046BI-Q1 offers identical functionality and automotive qualification but differs in packaging format, while USB2422 provides higher bandwidth at the cost of automotive compliance and pin compatibility.
Availability
TUSB2046BIRHBRQ1 is available at Aetrix Electronics and suitable for automotive infotainment, telematics control units, and USB-based diagnostic gateways requiring stable component supply, long-term lifecycle support, and AEC-Q100 traceability.
Supply support for TUSB2046BIRHBRQ1 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 with emphasis on automotive, industrial, and personal electronics markets.
The TUSB2046BIRHBRQ1 belongs to TI's automotive-qualified USB interface product line, designed specifically for robust, low-EMI USB hub functionality in harsh-temperature, safety-critical vehicle subsystems.
FAQ
What USB speed modes does the TUSB2046BIRHBRQ1 support?
The TUSB2046BIRHBRQ1 supports full-speed (12 Mb/s) and low-speed (1.5 Mb/s) USB 2.0 operation on all four downstream ports. It enumerates high-speed devices but limits throughput to full-speed rates. Auto-slew rate selection per port ensures correct signal integrity without external configuration.
Is the TUSB2046BIRHBRQ1 pin-compatible with the TUSB2046B-Q1?
Yes, the TUSB2046BIRHBRQ1 is pin-compatible with the TUSB2046B-Q1. Both use the same 32-pin VQFN (RHB) package, identical pin functions, and share the same electrical and thermal specifications. The "I" in TUSB2046BIRHBRQ1 denotes TI's internal revision identifier and does not affect compatibility.
How does the EEPROM interface work on the TUSB2046BIRHBRQ1?
The TUSB2046BIRHBRQ1 uses the EXTMEM pin to enable its serial EEPROM interface: when EXTMEM = 0, pins 5 (EECLK) and 6 (EEDATA) become active 3-state I/Os for loading VID, PID, and GANGED settings from an M93C46-compatible EEPROM at power-on reset. When EXTMEM = 1, pin 6 serves as GANGED input and EECLK is disabled.
Does the TUSB2046BIRHBRQ1 require external power-management ICs?
Yes, the TUSB2046BIRHBRQ1 requires external power switches (e.g., TPS2044) to control 5-V power delivery to downstream ports. It provides PWRON outputs and OVRCUR inputs for coordination but does not integrate power FETs or overcurrent sensing circuitry-these remain external per USB specification requirements.
What clock sources are supported by the TUSB2046BIRHBRQ1?
The TUSB2046BIRHBRQ1 supports two clock configurations: a 6-MHz crystal (XTAL1/XTAL2) with internal APLL generating 48-MHz core timing, or a direct 48-MHz external clock applied to TSTPLL/48MCLK. TSTMODE pin selects between them; crystal mode enables low-power suspend/resume, while 48-MHz mode bypasses the APLL.
TUSB2046BIRHBRQ1 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:
- 3.3V ~ 3.6V
- Current - Supply:
- 40mA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 32-VQFN (5x5)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
TUSB2046BIRHBRQ1 FAQ
1.How can I place an order for TUSB2046BIRHBRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TUSB2046BIRHBRQ1 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 TUSB2046BIRHBRQ1 reliable?
The price and inventory of TUSB2046BIRHBRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUSB2046BIRHBRQ1 is usually 5 days.
3.What payment methods are accepted for TUSB2046BIRHBRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUSB2046BIRHBRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUSB2046BIRHBRQ1?
TUSB2046BIRHBRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUSB2046BIRHBRQ1 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 TUSB2046BIRHBRQ1?
For technical support, including TUSB2046BIRHBRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUSB2046BIRHBRQ1 requirements.
6.How does Aetrix verify that TUSB2046BIRHBRQ1 is sourced from the original manufacturer or authorized distributors?
All TUSB2046BIRHBRQ1 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 TUSB2046BIRHBRQ1 meets industry standards.
7.What is the process for return or replacement of TUSB2046BIRHBRQ1?
All TUSB2046BIRHBRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TUSB2046BIRHBRQ1, 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 TUSB2046BIRHBRQ1 part is unused and in its original packaging.
Return procedure for TUSB2046BIRHBRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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