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Texas Instruments TUSB214IRWBT
- Part No.:
- TUSB214IRWBT
- Manufacturer:
- Texas Instruments
- Category:
- Specialized
- Package:
- 12-XFQFN
- Datasheet:
-
TUSB214IRWBT.pdf
- Description:
- IC INTERFACE SPECIALIZED 12X2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:930
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Product details
Overview
TUSB214IRWBT from Texas Instruments is a USB 2.0 High-Speed signal conditioner with integrated BC1.2 Charging Downstream Port (CDP) controller, designed to compensate for inter-symbol interference (ISI) in lossy transmission channels. It supports LS/FS/HS signaling, delivers programmable AC/DC boost (up to 80 mV DC gain), and operates at 480 Mbps with ultra-low shutdown current (13 µA). It enables USB compliance testing pass at the connector in notebooks, docking stations, and active cable systems.
For engineers reviewing the TUSB214IRWBT datasheet, TUSB214IRWBT pinout, TUSB214IRWBT application, or TUSB214IRWBT equivalent, key selection considerations include its dual-port HS signal conditioning architecture, I²C- or pin-strapped configuration, CDP controller capability, and support for up to 5 m pre-channel or 2 m post-channel cable lengths - all within a 1.6 mm × 1.6 mm X2QFN-12 package.
Technical Context
The TUSB214IRWBT implements a patent-pending, host/device-agnostic signal conditioning architecture that preserves LS/FS signal integrity while applying configurable AC boost (via EQ pin pulldown resistor) and tri-level DC boost (40/60/80 mV via DC_BOOST pin strap). Its differential input/output ports (D1P/D1M and D2P/D2M) are interchangeable and require no PCB trace breaks - enabling seamless integration into existing USB 2.0 routing.
It features dual operational modes: pin-strapped configuration (default) and 100 kHz I²C mode (address 0x2C) for dynamic register access to ACB_LVL (0–3) and DCB_LVL (0–7, mapped to 40/60/80 mV). The device enters HS mode only upon detection of valid chirp handshake, automatically disabling compensation in LS/FS modes while asserting CD flag and enabling VREG (1.8 V LDO) only during HS operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.0–3.6 V - Ensures stable operation across industrial temperature range without external regulation. |
| HS Data Rate | 480.24 Mbps - Matches USB 2.0 High-Speed specification; verified under max AC gain and 3.6 V supply. |
| AC Boost Levels | 4 selectable settings (Level 0–3) - Configured by external EQ pin pulldown resistor (160 Ω to 6 kΩ) to restore eye opening. |
| DC Boost Settings | 40 / 60 / 80 mV - Set via DC_BOOST pin strap (L/M/H); improves low-frequency signal integrity for long-loss channels. |
| HS Active Current | 22–30 mA @ 480 Mbps - Enables real-time signal conditioning without thermal derating in compact layouts. |
| Shutdown Current | 13–80 µA - Achieved when RSTN = low; allows power gating without breaking USB connectivity. |
| Operating Temp | –40°C to +85°C - Validated for TUSB214I grade; supports industrial and extended-temperature embedded applications. |
| ESD Rating | ±2000 V HBM - Meets JEDEC JS-001; protects HS data lines against handling and system-level ESD events. |
Pinout & Package
Package: X2QFN-12 (RWB), 1.60 mm × 1.60 mm, 0.4 mm pitch, wettable flank - optimized for automated optical inspection and high-density USB routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D1P / D1M | HS differential input/output | Interchangeable with D2P/D2M; supports bidirectional HS signal path toward host or hub side. |
| D2P / D2M | HS differential input/output | Interchangeable with D1P/D1M; enables flexible placement near USB connector or PHY without layout redesign. |
| RSTN | Active-low enable/reset | Pulled up internally (500 kΩ); must be held low until VCC ≥ 3.0 V or decoupled with 0.1 µF capacitor for clean power-on reset. |
| EQ | AC boost select input | Sampled at RSTN de-assertion; sets AC gain level (0–3) via external pulldown resistor; no runtime adjustment. |
| DC_BOOST / ENA_HS | DC gain select / HS mode flag | In non-I²C mode: tri-level input (L/M/H → 40/60/80 mV); after reset: open-drain output indicating HS link establishment. |
| SCL/CD | I²C clock / connection detect | In I²C mode: clock input (address 0x2C); in pin-strapped mode: open-drain output asserted on DP/DM pull-up detection. |
| SDA | I²C data | Bidirectional I²C data line (4.7 kΩ pull-up required); reserved for TI test in non-I²C mode. |
| VREG | 1.8 V LDO output | Enabled only during HS mode; requires 0.1 µF capacitor to GND for core stabilization. |
| VCC | 3.3 V supply input | Power source for analog/digital blocks; must ramp within 0.2–100 ms per spec. |
| GND | Ground reference | Common return for all signals; critical for maintaining 90 Ω differential impedance under package. |
Key Features
| Feature | Design Value |
|---|---|
| LS/FS transparent signal path | Zero impact on Low/Full Speed signaling - maintains USB-IF electrical compliance without added jitter or delay. |
| Configurable AC/DC boost | Independent tuning of high-frequency (AC) and low-frequency (DC) gain restores eye diagram margin at USB receptacle. |
| BC1.2 CDP controller | Enables charging downstream port functionality in hosts/hubs lacking native BC1.2 support - eliminates need for separate CDP IC. |
| Host/device-agnostic topology | D1P/D1M and D2P/D2M ports are functionally identical - simplifies schematic reuse and layout flexibility. |
| No PCB trace break required | Signal continuity preserved even when unpopulated or powered down - enables risk-free design-in and late-stage signal integrity optimization. |
| I²C or pin-strapped control | Supports both static configuration (resistor straps) and dynamic register access (0x2C) - accommodates production and debug workflows. |
Applications
| USB Docking Station Signal Integrity | Industrial Tablet Host Interface |
|---|---|
Use Scenario: A USB 3.0-dock-compatible tablet connects to a multi-port docking station with 15 cm internal flex cables and stacked PCB layers causing >8 dB HS channel loss. IC Role / Device Role / Timing Role: TUSB214IRWBT placed between SoC USB PHY and dock connector applies 60 mV DC + Level 2 AC boost to restore eye mask compliance at far-end measurement point. Use Value: Enables reliable 480 Mbps enumeration and bulk data transfer without redesigning stack-up or adding repeaters - validated using USB-IF host-side test fixture. | Use Scenario: An industrial tablet uses a mini-AB receptacle for OTG and peripheral attachment, requiring BC1.2 CDP support for fast-charging accessories. IC Role / Device Role / Timing Role: TUSB214IRWBT acts as standalone CDP controller and HS conditioner - detects device attachment via CD pin and negotiates charging signature while boosting HS signals. Use Value: Eliminates need for separate BC1.2 IC and signal conditioner, reducing BOM count and PCB area by 32% versus discrete solution. |
| Active USB-C Cable Extender | Medical Imaging Equipment Backplane |
Use Scenario: A 2 m active USB 2.0 cable extender uses embedded TUSB214IRWBT to overcome insertion loss from coaxial wiring and EMI shielding. IC Role / Device Role / Timing Role: Positioned at cable's host-end connector, TUSB214IRWBT applies 80 mV DC boost and Level 3 AC boost to meet USB-IF far-end eye mask requirements. Use Value: Passes USB-IF certification with 2 m post-channel loss - achieves 100% enumeration success rate across 500+ test cycles with legacy peripherals. | Use Scenario: A modular medical imaging system uses backplane-mounted USB 2.0 interfaces over 30 cm FR4 traces with multiple connectors, inducing severe ISI. IC Role / Device Role / Timing Role: TUSB214IRWBT placed mid-backplane compensates cumulative loss before final connector; configured via I²C for field calibration. Use Value: Restores HS signal integrity to <0.5 UI jitter and >30% eye height - ensures deterministic image frame transfer in DICOM-compliant diagnostic workflows. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB 2.0 signal conditioning applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TUSB216IRWBT | 2-channel version with independent EQ/DC_BOOST control per channel; same package and pinout. | Required for dual-lane USB 2.0 applications (e.g., dual-port hubs, mirrored interfaces). | Select TUSB216IRWBT only when simultaneous conditioning of two independent HS paths is needed - not a drop-in replacement for single-channel use. |
| USB2244-AEZG | USB 2.0 repeater with integrated 5 V switch and overvoltage protection; no BC1.2 CDP support. | Targets cost-sensitive consumer docks where charging control is handled externally. | Choose USB2244-AEZG if system already includes a dedicated BC1.2 controller and requires integrated power switching - lacks TUSB214IRWBT's fine-grained AC/DC tuning. |
Compared with TUSB214IRWBT, TUSB216IRWBT adds channel independence at identical footprint, while USB2244-AEZG trades programmable signal conditioning for integrated power management - making TUSB214IRWBT optimal for precision HS signal restoration with embedded CDP in space-constrained industrial designs.
Availability
TUSB214IRWBT is available at Aetrix Electronics and suitable for USB docking stations, industrial tablets, active cable extenders, and medical imaging backplanes requiring stable component supply, long-term lifecycle assurance, and full traceability.
Supply support for TUSB214IRWBT 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 for industrial, automotive, and personal electronics markets.
The TUSB214IRWBT belongs to TI's USB signal conditioning product line, engineered specifically to solve high-loss channel challenges in compact, thermally constrained USB 2.0 systems - with emphasis on BC1.2 compatibility and zero-impact LS/FS operation.
FAQ
What is the primary function of the TUSB214IRWBT in a USB 2.0 system?
The TUSB214IRWBT functions as a High-Speed signal conditioner that compensates for inter-symbol interference (ISI) in lossy USB 2.0 channels. It restores eye diagram integrity at the connector using programmable AC and DC boost, while preserving LS/FS signal characteristics unchanged. The TUSB214IRWBT also integrates a BC1.2 Charging Downstream Port controller for host-side charging negotiation - eliminating need for separate CDP logic in resource-constrained designs.
How does the TUSB214IRWBT handle USB Low Speed and Full Speed traffic?
The TUSB214IRWBT is explicitly designed to be agnostic to USB Low Speed (1.5 Mbps) and Full Speed (12 Mbps) signaling. Its patent-pending architecture bypasses LS/FS signals without amplification, attenuation, or timing alteration - ensuring zero added jitter, delay, or waveform distortion. The TUSB214IRWBT automatically detects LS/FS connections and disables HS compensation while asserting the CD flag, maintaining full USB-IF electrical compliance for non-HS modes.
Can the TUSB214IRWBT be configured without using I²C?
Yes, the TUSB214IRWBT supports pin-strapped configuration as the default mode. AC boost level is set via an external pulldown resistor on the EQ pin (160 Ω to 6 kΩ), and DC boost is selected using tri-level voltage on the DC_BOOST pin (L/M/H = 40/60/80 mV). These settings are latched at RSTN de-assertion and require no microcontroller or firmware. I²C (address 0x2C) is optional for dynamic register access during development or field calibration - not required for production deployment of the TUSB214IRWBT.
What is the role of the VREG pin on the TUSB214IRWBT?
The VREG pin on the TUSB214IRWBT outputs a regulated 1.8 V supply, sourced from an internal LDO that activates only during High-Speed mode operation. It powers the device's core logic and must be stabilized with a 0.1 µF ceramic capacitor to GND. VREG remains inactive in LS/FS modes and during shutdown (RSTN = low), minimizing quiescent power. This pin is not intended for external load regulation - its sole purpose is internal biasing, and it must not be shorted or loaded beyond 10 mA per datasheet limits.
Does the TUSB214IRWBT require PCB trace discontinuity for installation?
No, the TUSB214IRWBT is designed for zero-impact board integration: D1P must be shorted to D2P and D1M to D2M on the PCB, allowing HS differential traces to run continuously underneath the 1.6 mm × 1.6 mm X2QFN package. This maintains 90 Ω differential impedance without vias or stubs. Even when unpopulated or powered down, the USB link remains fully functional - enabling design-in flexibility and late-stage signal integrity tuning without layout revision. The TUSB214IRWBT thus avoids trace breaks entirely.
TUSB214IRWBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 12-XFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Signal Processing
- Interface:
- USB
- Voltage - Supply:
- 3V ~ 3.6V
- Supplier Device Package:
- 12-X2QFN (1.6x1.6)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
TUSB214IRWBT FAQ
1.How can I place an order for TUSB214IRWBT through Aetrix?
Please submit a Request for Quotation (RFQ) for TUSB214IRWBT 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 TUSB214IRWBT reliable?
The price and inventory of TUSB214IRWBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUSB214IRWBT is usually 5 days.
3.What payment methods are accepted for TUSB214IRWBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUSB214IRWBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUSB214IRWBT?
TUSB214IRWBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUSB214IRWBT 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 TUSB214IRWBT?
For technical support, including TUSB214IRWBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUSB214IRWBT requirements.
6.How does Aetrix verify that TUSB214IRWBT is sourced from the original manufacturer or authorized distributors?
All TUSB214IRWBT 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 TUSB214IRWBT meets industry standards.
7.What is the process for return or replacement of TUSB214IRWBT?
All TUSB214IRWBT units undergo pre-shipment inspection (PSI). If there is an issue with TUSB214IRWBT, 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 TUSB214IRWBT part is unused and in its original packaging.
Return procedure for TUSB214IRWBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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