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Texas Instruments TUSB214IRWBR
- Part No.:
- TUSB214IRWBR
- Manufacturer:
- Texas Instruments
- Category:
- Specialized
- Package:
- 12-XFQFN
- Datasheet:
-
TUSB214IRWBR.pdf
- Description:
- IC INTERFACE SPECIALIZED 12X2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,477
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Product details
Overview
TUSB214IRWBR 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 channels. It supports LS/FS/HS signaling without altering low- and full-speed signal integrity, delivers programmable AC/DC boost (up to 80 mV DC gain), and operates across 0°C to 85°C ambient temperature with 3.3 V supply.
For engineers reviewing the TUSB214IRWBR datasheet, TUSB214IRWBR pinout, TUSB214IRWBR application, or TUSB214IRWBR equivalent, key selection considerations include HS eye mask compliance support, CDP controller capability for host/hub extension, configurable gain via EQ/DC_BOOST pin strapping, and seamless integration into USB 2.0 host-side or device-side signal paths without trace discontinuity.
Technical Context
The TUSB214IRWBR implements a patent-pending architecture that passes LS and FS signals transparently while applying adaptive equalization only to HS differential pairs (D1P/D1M and D2P/D2M). Its dual-port design enables flexible placement-either between USB PHY and connector (post-channel) or upstream of the PHY (pre-channel)-supporting up to 5 m pre-channel or 2 m post-channel cable lengths.
Configuration is achieved via pin-strapped inputs (EQ for four AC boost levels; DC_BOOST for three DC gain settings: 40/60/80 mV) or optional I²C (address 0x2C) for runtime reconfiguration. The device includes a dedicated CDP controller, CD status flag output, ENA_HS handshake indicator, and 1.8 V VREG LDO output enabled only during HS mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.0 V to 3.6 V - ensures compatibility with standard USB 3.3 V rail; operation outside this range risks permanent damage. |
| HS Bit Rate | 480.24 Mbps - maintains full USB 2.0 High-Speed data throughput without protocol alteration or latency penalty. |
| AC Boost Levels | 4 selectable via external EQ pull-down resistor - enables precise compensation for channel loss (e.g., 3.83 kΩ = Level 2). |
| DC Boost Settings | 40 mV / 60 mV / 80 mV - configurable via DC_BOOST pin strap to restore signal baseline under high-loss conditions. |
| HS Active Current | 22–30 mA at 480 Mbps - defines power budget impact when actively conditioning high-speed traffic. |
| ESD Rating (HBM) | ±2000 V - meets JEDEC JS-001 for robust handling in manufacturing and system integration environments. |
| Ambient Temp Range | 0°C to 85°C - qualified for commercial and industrial endpoint applications including docking stations and tablets. |
Pinout & Package
Package: X2QFN-12 (1.60 mm × 1.60 mm, 0.4 mm pitch, wettable flank), thermally enhanced for compact USB layout integration with no PCB trace break required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D1P / D1M | HS differential input/output pair | Connects to USB host/hub PHY side; bidirectional, agnostic to host/device role. |
| D2P / D2M | HS differential input/output pair | Connects to USB receptacle/cable side; electrically interchangeable with D1P/D1M. |
| RSTN | Active-low enable/reset | Held high for normal operation; driven low forces shutdown (≤80 µA leakage); requires 100 ns minimum pulse width. |
| EQ | AC boost configuration input | Latched at RSTN de-assertion; selects one of four AC gain levels via external pulldown resistor (160 Ω to 6 kΩ). |
| DC_BOOST / ENA_HS | Tri-level DC gain input / HS mode flag output | Configures DC boost (40/60/80 mV) at reset; outputs ENA_HS high upon successful HS handshake detection. |
| SCL/CD | I²C clock / connection detect output | In non-I²C mode: asserts CD high on DP/DM pull-up detection; in I²C mode: clock input (7-bit address 0x2C). |
| SDA | I²C data bidirectional | Supports 100 kHz I²C for register access (e.g., ACB_LVL, DCB_LVL); requires 4.7 kΩ pull-up in I²C mode. |
| VCC | Primary power supply | 3.3 V nominal input; powers all circuitry except VREG LDO (enabled only in HS mode). |
| GND | Signal and power ground | Common reference for all analog/digital functions; must be low-impedance and adjacent to VCC decoupling. |
| VREG | 1.8 V internal LDO output | Supplies core logic during HS mode only; requires 0.1 µF ceramic capacitor to GND for stability. |
Key Features
| Feature | Design Value |
|---|---|
| HS Signal Conditioning | Compensates ISI-induced eye closure without affecting LS/FS signal timing or voltage levels - preserves backward compatibility. |
| BC1.2 CDP Controller | Enables charging downstream port functionality on hosts/hubs lacking native BC1.2 support - eliminates need for external CDP IC. |
| Pin-Strap Configuration | Four AC boost + three DC boost settings configured at power-up via resistors - avoids firmware dependency and simplifies BOM. |
| Zero-Trace-Disruption Layout | D1P↔D2P and D1M↔D2M shorted on PCB - allows placement inline with USB DP/DM traces, enabling "populated or not" design flexibility. |
| HS Mode Detection & Flagging | Automatically detects HS chirp handshake and asserts ENA_HS - provides system-level visibility into active HS link status. |
Applications
| USB Docking Station Signal Integrity | Tablet Host-Side USB Compliance |
|---|---|
Use Scenario: A USB-C docking station routes multiple high-speed peripherals through a single upstream port, suffering signal degradation over long internal PCB traces and connectors. IC Role / Device Role / Timing Role: TUSB214IRWBR acts as a post-channel HS repeater placed near the upstream USB receptacle, restoring eye opening before test fixture measurement. Use Value: Enables pass/fail compliance with USB-IF HS near-end eye mask requirements using factory-calibrated AC/DC boost settings (e.g., Level 2 AC + Mid DC). | Use Scenario: A tablet motherboard integrates a USB 2.0 host controller but lacks BC1.2 CDP support, limiting fast-charging capability for connected accessories. IC Role / Device Role / Timing Role: TUSB214IRWBR serves as both HS signal conditioner and embedded CDP controller, managing D+–D− detection and charging handshaking. Use Value: Delivers 1.5 A charging current to compliant devices without modifying host controller firmware or adding discrete BC1.2 ICs. |
| Active USB Cable Extender | Industrial USB Hub Signal Restoration |
Use Scenario: An active USB 2.0 cable extends reach beyond 5 m by embedding signal conditioning within the connector housing. IC Role / Device Role / Timing Role: TUSB214IRWBR is mounted inside the cable's source-end connector, compensating for pre-channel loss across the entire cable length. Use Value: Supports reliable 480 Mbps operation over 5 m pre-channel loss - validated via USB-IF far-end eye diagrams with and without TUSB214IRWBR. | Use Scenario: An industrial USB hub connects legacy instrumentation via long backplane traces, causing marginal HS signal integrity and intermittent enumeration. IC Role / Device Role / Timing Role: TUSB214IRWBR is inserted mid-backplane to boost signal amplitude and reduce jitter accumulation before reaching downstream ports. Use Value: Restores stable HS enumeration and sustained bulk transfer performance - verified using oscilloscope-based eye mask testing per USB-IF specifications. |
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 |
|---|---|---|---|
| TUSB216IRWBR | Two-channel version with independent EQ/DC_BOOST control per channel; identical pinout and AC/DC boost ranges. | Required when conditioning two separate USB 2.0 links (e.g., dual-host docking station) - not suitable for single-channel cost-sensitive designs. | Select TUSB216IRWBR only if dual-channel operation is needed; otherwise TUSB214IRWBR offers lower BOM cost and footprint. |
| USB2514B-AEZG | Integrated USB 2.0 hub controller with built-in signal conditioning; supports 4 downstream ports; requires external crystal and firmware. | Used where hub functionality is primary requirement; signal conditioning is secondary and fixed - lacks programmable AC/DC boost tuning. | Choose USB2514B-AEZG when adding hub ports is essential; choose TUSB214IRWBR when pure signal restoration and CDP extension are the sole goals. |
Compared with TUSB214IRWBR, TUSB216IRWBR adds channel independence at higher cost and area, while USB2514B-AEZG embeds conditioning within a full hub solution requiring firmware and external timing - making TUSB214IRWBR optimal for minimal-footprint, standalone HS signal integrity enhancement with BC1.2 CDP support.
Availability
TUSB214IRWBR is available at Aetrix Electronics and suitable for USB docking stations, industrial USB hubs, tablet host interfaces, and active cable extenders requiring stable component supply, long-term lifecycle assurance, and production-ready signal integrity validation.
Supply support for TUSB214IRWBR 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 TUSB214IRWBR belongs to TI's USB signal conditioning product line, engineered specifically to solve high-speed USB 2.0 channel loss challenges in space-constrained endpoints while extending battery charging capability via integrated BC1.2 CDP control.
FAQ
What is the primary function of the TUSB214IRWBR in a USB 2.0 system?
The TUSB214IRWBR primarily functions as a USB 2.0 High-Speed signal conditioner that compensates for inter-symbol interference (ISI) in lossy transmission channels. It restores HS signal integrity without altering LS/FS signal characteristics and integrates a BC1.2 Charging Downstream Port (CDP) controller. This dual capability makes TUSB214IRWBR ideal for host-side applications where signal margin is marginal and native CDP support is absent.
How does the TUSB214IRWBR handle USB Low Speed and Full Speed traffic?
The TUSB214IRWBR is explicitly designed to be agnostic to USB Low Speed (LS) and Full Speed (FS) signaling. Its patent-pending architecture passes LS and FS signals transparently - with no amplification, delay, or waveform distortion - while applying equalization exclusively to High-Speed differential pairs. This ensures full backward compatibility and eliminates risk of disrupting enumeration or data transfer for non-HS devices connected to systems using TUSB214IRWBR.
Can the TUSB214IRWBR be configured without using I²C?
Yes, the TUSB214IRWBR supports full pin-strapped configuration without I²C. The EQ pin selects one of four AC boost levels via an external pulldown resistor, and the DC_BOOST pin sets DC gain to 40 mV, 60 mV, or 80 mV using high/mid/low logic states. These settings are latched at RSTN de-assertion and require no firmware or serial interface - making TUSB214IRWBR suitable for cost-sensitive, firmware-light designs where I²C resources are unavailable or undesired.
What is the role of the VREG pin on the TUSB214IRWBR?
The VREG pin on the TUSB214IRWBR is a 1.8 V output from an internal LDO regulator that powers the device's core logic during High-Speed mode only. It is disabled in LS/FS modes and shutdown. A mandatory 0.1 µF ceramic capacitor must be placed between VREG and GND to stabilize the LDO output. This design isolates core power from the main 3.3 V rail, improving noise immunity and ensuring reliable HS state machine operation - a critical requirement for consistent TUSB214IRWBR performance.
Does the TUSB214IRWBR require PCB trace discontinuity for integration?
No, the TUSB214IRWBR is designed for zero-trace-disruption integration: D1P must be shorted to D2P and D1M to D2M on the PCB, allowing USB DP/DM traces to run continuously underneath the X2QFN package. This enables "design once, populate optionally" layouts - the USB link remains fully functional even if TUSB214IRWBR is omitted from the BOM. This feature reduces design risk and simplifies validation, as signal integrity tuning can be deferred until lab testing confirms the need for TUSB214IRWBR.
TUSB214IRWBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 12-XFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- USB
- Interface:
- I2C
- Voltage - Supply:
- 3V ~ 3.6V
- Supplier Device Package:
- 12-X2QFN (1.6x1.6)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
TUSB214IRWBR FAQ
1.How can I place an order for TUSB214IRWBR through Aetrix?
Please submit a Request for Quotation (RFQ) for TUSB214IRWBR 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 TUSB214IRWBR reliable?
The price and inventory of TUSB214IRWBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUSB214IRWBR is usually 5 days.
3.What payment methods are accepted for TUSB214IRWBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUSB214IRWBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUSB214IRWBR?
TUSB214IRWBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUSB214IRWBR 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 TUSB214IRWBR?
For technical support, including TUSB214IRWBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUSB214IRWBR requirements.
6.How does Aetrix verify that TUSB214IRWBR is sourced from the original manufacturer or authorized distributors?
All TUSB214IRWBR 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 TUSB214IRWBR meets industry standards.
7.What is the process for return or replacement of TUSB214IRWBR?
All TUSB214IRWBR units undergo pre-shipment inspection (PSI). If there is an issue with TUSB214IRWBR, 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 TUSB214IRWBR part is unused and in its original packaging.
Return procedure for TUSB214IRWBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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