My Inquiry
My Account
Texas Instruments TUSB212IRWBT
- Part No.:
- TUSB212IRWBT
- Manufacturer:
- Texas Instruments
- Category:
- Specialized
- Package:
- 12-XFQFN
- Datasheet:
-
TUSB212IRWBT.pdf
- Description:
- IC INTERFACE SPECIALIZED 12X2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:26,964
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TUSB212IRWBT from Texas Instruments is a USB 2.0 High-Speed (480 Mbps) signal conditioner IC designed to restore signal integrity in lossy USB channels. It provides programmable AC and DC boost (40/60/80 mV DC; 4 AC levels), supports LS/FS/HS signaling without altering low- and full-speed signals, and operates within 3.0–3.6 V supply at 0°C to 85°C ambient. It is used in host-side USB receptacle interfaces to pass USB-IF HS eye mask compliance.
For engineers reviewing the TUSB212IRWBT datasheet, TUSB212IRWBT pinout, TUSB212IRWBT application, or TUSB212IRWBT equivalent, key selection considerations include its dual-port HS signal conditioning architecture, I²C or pin-strapped configuration, ultra-low disconnect power (0.7–1.5 mA), and compatibility with USB OTG 2.0 and BC 1.2 protocols.
Technical Context
The TUSB212IRWBT implements a patent-pending, agnostic signal conditioning architecture that leaves LS/FS differential signaling unaltered while applying configurable AC gain (via EQ pin pulldown resistor) and tri-level DC boost (via DC_BOOST pin strap) exclusively to HS traffic. Its functional modes-LS, FS, HS, shutdown, and I²C-are automatically detected or externally controlled.
It features two bidirectional HS differential ports (D1P/D1M and D2P/D2M) with 2.4 pF pin capacitance, integrated CD (connection detect) and ENA_HS status flags, and an internal 1.8-V LDO (VREG) enabled only during HS operation. The device supports daisy-chain configuration for high-loss applications and maintains USB channel continuity even when unpowered or unpopulated.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.0–3.6 V - Ensures stable operation across industrial-grade voltage tolerances; compatible with standard 3.3-V rail designs. |
| HS Data Rate | 480.24 Mbps - Matches USB 2.0 High-Speed specification; enables full-bandwidth peripheral connectivity. |
| AC Boost Levels | 4 selectable via external EQ pulldown resistor - Enables precise compensation for pre- or post-channel losses up to 5 m (pre) or 2 m (post). |
| DC Boost Settings | 40 / 60 / 80 mV (pin-strapped) - Adds adjustable DC offset to counter cable-induced baseline wander and improve eye height. |
| HS Active Current | 22–30 mA @ 480 Mbps - Low power consumption during active HS transmission; reduces thermal load in dense layouts. |
| ESD Rating | ±2000 V HBM - Robust protection against handling and system-level electrostatic discharge per JS-001. |
| Operating Temp | 0°C to +85°C - Qualified for commercial and extended-temperature industrial USB host applications. |
Pinout & Package
The TUSB212IRWBT is housed in a 12-pin X2QFN (RWB) package measuring 1.60 mm × 1.60 mm with 0.4-mm pitch and wettable flanks for automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D1P / D1M | HS differential input/output port 1 | Bidirectional HS data path facing USB transceiver; requires PCB trace shorting to D2P/D2M for signal continuity. |
| D2P / D2M | HS differential input/output port 2 | Bidirectional HS data path facing USB connector; maintains uninterrupted DP/DM routing under device footprint. |
| RSTN | Active-low reset enable | Drives device into shutdown (≤80 µA) when low; must be held low until VCC stabilizes ≥3.0 V or use 0.1-µF RC filter. |
| EQ | AC boost select input | Latched at RSTN de-assertion; sets one of four AC gain levels via external pulldown resistor (160 Ω to 6 kΩ). |
| DC_BOOST / ENA_HS | Tri-level DC boost / HS mode flag | Configures DC offset (40/60/80 mV) pre-reset; outputs ENA_HS high upon successful HS handshake detection. |
| SCL/CD | I²C clock / connection detect output | In non-I²C mode: open-drain CD flag asserts high on DP/DM pull-up detection (device attach); in I²C mode: clock input (address 0x2C). |
| SDA | I²C data bidirectional | In non-I²C mode: reserved; in I²C mode: bidirectional data line for register access (ACB_LVL, DCB_LVL, CFG_ACTIVE). |
| VCC | Primary power supply | 3.0–3.6 V input; powers all circuitry except VREG LDO, which activates only in HS mode. |
| GND | Signal and power ground | Common reference for all analog/digital functions; requires low-inductance connection to minimize noise coupling. |
| VREG | 1.8-V internal LDO output | Supplies core logic only during HS operation; requires 0.1-µF decoupling capacitor to GND for stability. |
Key Features
| Feature | Design Value |
|---|---|
| USB 2.0/OTG 2.0/BC 1.2 Compliance | Fully interoperable with legacy and charging-aware USB hosts/devices without protocol modification or enumeration delay. |
| LS/FS Signal Transparency | Zero insertion loss and no timing skew for low- and full-speed traffic - preserves backward compatibility and enumeration reliability. |
| Configurable Gain Architecture | Independent AC (4 levels) and DC (3 levels) boost tuning enables optimization for specific channel loss profiles and eye mask margins. |
| Board-Level Signal Continuity | Footprint allows DP/DM traces to route directly underneath the package - eliminates vias and maintains 90-Ω differential impedance without layout redesign. |
| Ultra-Low Disconnect Power | 0.7–1.5 mA typical current draw when no device is attached - minimizes standby power in always-on USB receptacles. |
Applications
| USB Host Receptacle Signal Restoration | Active USB Cable Extension |
|---|---|
Use Scenario: USB Type-A or Type-C receptacle on notebook motherboard exhibits marginal HS eye opening due to 80-mm FR4 trace loss. IC Role / Device Role / Timing Role: TUSB212IRWBT placed between USB PHY and connector applies calibrated AC+DC boost to restore signal amplitude and jitter margin at far-end measurement point. Use Value: Enables pass/fail compliance with USB-IF HS near-end eye mask without redesigning PCB stackup or adding repeaters. | Use Scenario: 3-meter active USB 2.0 cable fails HS electrical tests due to cumulative connector and cable attenuation. IC Role / Device Role / Timing Role: TUSB212IRWBT embedded in cable assembly compensates for pre-channel loss before signal enters cable; configured via fixed EQ/DC_BOOST straps. Use Value: Extends certified cable length from 2 m to 5 m while maintaining 480 Mbps throughput and full USB 2.0 feature support. |
| USB Docking Station Channel Equalization | Industrial USB Hub Signal Integrity Management |
Use Scenario: Docking station with multiple downstream ports shows inconsistent HS link training success across ports due to trace length mismatch. IC Role / Device Role / Timing Role: TUSB212IRWBT deployed per-port to equalize channel loss; AC/DC settings tuned individually to match each port's physical layout. Use Value: Eliminates intermittent HS enumeration failures and ensures reliable plug-and-play for peripherals across all ports. | Use Scenario: Ruggedized industrial hub operating in wide temperature range experiences HS signal degradation after thermal cycling. IC Role / Device Role / Timing Role: TUSB212IRWBT integrated with temperature-stable resistor network on EQ/DC_BOOST pins delivers consistent boost across -40°C to +85°C. Use Value: Maintains USB 2.0 HS compliance over full industrial temperature range without firmware intervention or recalibration. |
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 |
|---|---|---|---|
| TUSB211IRWBT | Single-port (D1-only) configuration; no D2P/D2M; lacks CD/ENA_HS status outputs; no I²C interface. | Targeted for space-constrained single-path applications where connection detection and configurability are unnecessary. | Select when board area is critical and only basic HS boost is required without monitoring or multi-port flexibility. |
| USB2244-AEZG | Integrated USB 2.0 transceiver + signal conditioner; includes built-in ESD protection; requires external crystal; larger QFN-48 package. | Used in embedded host controllers needing PHY + conditioner in one die; not drop-in replaceable due to different pin count, interface, and clocking. | Choose when designing new USB host controller ASICs or SoCs requiring integrated PHY functionality beyond pure signal restoration. |
Compared with TUSB212IRWBT, TUSB211IRWBT offers reduced cost and footprint but sacrifices configurability and status feedback, while USB2244-AEZG provides higher integration at the expense of layout complexity and lack of pin-to-pin compatibility - making TUSB212IRWBT optimal for discrete, flexible, and test-focused USB signal integrity enhancement.
Availability
TUSB212IRWBT is available at Aetrix Electronics and suitable for notebooks, docking stations, active cables, and industrial USB hubs requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for production programs.
Supply support for TUSB212IRWBT 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 delivering analog and embedded processing solutions, with leadership in signal chain and power management technologies.
The TUSB212IRWBT belongs to TI's USB signal conditioning product line, engineered specifically to solve high-speed USB 2.0 channel loss challenges in compact, thermally constrained host platforms without disrupting existing USB protocol stacks.
FAQ
What is the primary function of the TUSB212IRWBT in a USB 2.0 system?
The TUSB212IRWBT is a dedicated USB 2.0 High-Speed signal conditioner that restores signal integrity by applying programmable AC and DC boost to compensate for inter-symbol interference (ISI) caused by PCB trace loss, connectors, or cables. It does not alter LS/FS signals and maintains full USB 2.0, OTG 2.0, and BC 1.2 compliance. The TUSB212IRWBT achieves this while enabling board-level signal continuity and supporting both pin-strapped and I²C configuration modes.
Does the TUSB212IRWBT require external components for basic operation?
Yes - the TUSB212IRWBT requires a 0.1-µF capacitor on VREG to stabilize its internal 1.8-V LDO, and a 0.1-µF capacitor on VCC for supply decoupling. If RSTN is not actively driven, a pull-up resistor and 0.1-µF capacitor to GND are needed to ensure clean power-on reset. For pin-strapped configuration, external resistors on EQ (for AC boost) and DC_BOOST (for DC boost) are mandatory; values are specified in the datasheet for each gain level.
Can the TUSB212IRWBT be used in both host-side and device-side USB implementations?
Yes - the TUSB212IRWBT is host/device agnostic and supports both orientations: D1P/D1M can face the USB transceiver while D2P/D2M face the connector (standard host-side), or vice versa for device-side placement. Its CD pin detects attachment regardless of direction, and ENA_HS asserts upon HS handshake completion. Application note SLLSEX5A confirms validated use cases for both host and device-side test fixtures per USB-IF compliance procedures.
How does the TUSB212IRWBT handle USB Low Speed and Full Speed traffic?
The TUSB212IRWBT is explicitly designed to be transparent to LS and FS signaling: it does not apply any gain, filtering, or delay to these modes. Its patent-pending architecture bypasses LS/FS differential pairs while only conditioning HS traffic, ensuring zero impact on enumeration, HID device recognition, or legacy peripheral compatibility. This behavior is verified in the datasheet's functional description and supported by measured LS/FS current draw (0.6–1.5 mA) independent of boost settings.
Is the TUSB212IRWBT pin-compatible with other devices in the TUSB21x family?
No - the TUSB212IRWBT is not pin-compatible with TUSB211IRWBT or TUSB213 variants. While all share the same RWB (X2QFN-12) package outline, pin assignments differ significantly: TUSB211 lacks SDA, SCL/CD, EQ, and DC_BOOST/ENA_HS pins, and TUSB213 adds I²C address select pins. The TUSB212IRWBT's 12-pin mapping - including dual HS ports, dual status outputs, and dual configuration inputs - is unique to its feature set and cannot be substituted without PCB revision.
TUSB212IRWBT 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
TUSB212IRWBT FAQ
1.How can I place an order for TUSB212IRWBT through Aetrix?
Please submit a Request for Quotation (RFQ) for TUSB212IRWBT 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 TUSB212IRWBT reliable?
The price and inventory of TUSB212IRWBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUSB212IRWBT is usually 5 days.
3.What payment methods are accepted for TUSB212IRWBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUSB212IRWBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUSB212IRWBT?
TUSB212IRWBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUSB212IRWBT 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 TUSB212IRWBT?
For technical support, including TUSB212IRWBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUSB212IRWBT requirements.
6.How does Aetrix verify that TUSB212IRWBT is sourced from the original manufacturer or authorized distributors?
All TUSB212IRWBT 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 TUSB212IRWBT meets industry standards.
7.What is the process for return or replacement of TUSB212IRWBT?
All TUSB212IRWBT units undergo pre-shipment inspection (PSI). If there is an issue with TUSB212IRWBT, 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 TUSB212IRWBT part is unused and in its original packaging.
Return procedure for TUSB212IRWBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TUSB212IRWBT Tags
-
NVT4857UKAZ
NXP Semiconductors
-
TCA8418RTWR
Texas Instruments
-
PCA9546APWR
Texas Instruments
-
MD0100N8-G
Microchip Technology
-
PCA9548APW,118
NXP Semiconductors
-
PCA9540BDP,118
NXP Semiconductors
-
PCA9548APWR
Texas Instruments
-
PCA9546APW,118
NXP Semiconductors
-
PTN3360DBS,518
NXP Semiconductors
-
PCA9546ABS,118
NXP Semiconductors
-
PCA9518PWR
Texas Instruments
-
PCA9545APW,118
NXP Semiconductors
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…
