Texas Instruments TUSB217AIRWBR

Overview

TUSB217AIRWBR from Texas Instruments is a USB 2.0 high-speed signal conditioner with integrated BC 1.2 DCP/CDP controllers, operating across 2.3–6.5 V supply, supporting up to 5-m cable length with 480 Mbps data rate and ultra-low 0.75–1.4 mA HS suspend current. It compensates AC/DC loss and ISI jitter without adding latency, enabling near-end eye compliance in docking stations and active cables.

For engineers reviewing the TUSB217AIRWBR datasheet, TUSB217AIRWBR pinout, TUSB217AIRWBR application, or TUSB217AIRWBR equivalent, key selection factors include its 12-pin X2QFN (1.6 × 1.6 mm) package, tri-level RX_SEN configuration for ISI compensation, BOOST pin-selectable edge/DC boost levels, BC 1.2 dynamic DCP/CDP mode switching, and I2C-configurable registers for fine-grained signal tuning.

Technical Context

The TUSB217AIRWBR implements a patented dual-stage signal conditioning architecture: edge boost accelerates transition edges while DC boost restores static signal levels, both configurable via external pull-down resistors on the BOOST pin (four discrete levels). Its RX_SEN pin provides three selectable pre-equalization settings to counteract inter-symbol interference in high-loss channels such as long cables or lossy PCB traces.

It operates agnostically in host or device roles, supports LS/FS/HS signaling without altering packet timing, and integrates a BC 1.2 controller that dynamically switches between Dedicated Charging Port (DCP) and Charging Downstream Port (CDP) modes based on the logic level of the DCP/CDP pin - with internal 500 kΩ pull-up ensuring CDP mode when floating. The device enters shutdown when RSTN is asserted low, maintaining passive USB path continuity.

Key Specifications

Pinout & Package

X2QFN-12 (RWB) package: 1.60 mm × 1.60 mm, 0.4 mm pitch, wettable flank, thermal pad exposed on bottom.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB 2.0 signal conditioning applications.

Compared with TUSB216IRWBR and TUSB214IRWBR, the TUSB217AIRWBR uniquely combines BC 1.2 DCP/CDP mode agility, tri-level RX equalization for ISI mitigation, and four-level boost configurability - making it the only option capable of supporting dynamic charging-aware docks and high-loss active cables within a single 1.6 × 1.6 mm footprint.

Availability

TUSB217AIRWBR is available at Aetrix Electronics and suitable for laptop docking stations, active USB cable assemblies, USB-C hubs with charging, and industrial tablet docking interfaces requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for TUSB217AIRWBR 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 interface, power management, and signal chain technologies.

The TUSB217AIRWBR belongs to TI's USB signal conditioning product line, designed specifically to solve high-speed signal integrity challenges in USB 2.0 host, peripheral, and cable applications - emphasizing low-latency redriving, BC 1.2 compliance, and compact packaging for space-constrained designs.

FAQ

What is the primary function of the TUSB217AIRWBR in a USB 2.0 system?

The TUSB217AIRWBR functions as a high-speed signal conditioner that restores USB 2.0 eye integrity by compensating for AC loss (capacitive), DC loss (resistive), and inter-symbol interference (ISI) without adding latency or altering packet timing. It enables reliable 480 Mbps operation over longer cables or lossy PCB traces, and its integrated BC 1.2 DCP/CDP controller handles charging mode negotiation - all within the TUSB217AIRWBR's compact X2QFN package.

How does the BOOST pin on the TUSB217AIRWBR configure signal enhancement?

The BOOST pin on the TUSB217AIRWBR selects four discrete levels of combined edge boost and DC boost using external pull-down resistors: Level 0 (160 Ω), Level 1 (1.5–1.8 kΩ), Level 2 (3.4–3.96 kΩ), and Level 3 (≥7.5 kΩ or open). These settings are sampled at power-up and determine the strength of transition edge acceleration and static level restoration applied to the USB 2.0 high-speed signal - a key tuning parameter for optimizing TUSB217AIRWBR performance in specific channel loss conditions.

Can the TUSB217AIRWBR operate in both host and device roles?

Yes, the TUSB217AIRWBR is host- and device-agnostic: it transparently conditions USB 2.0 high-speed signals regardless of directionality, supporting OTG applications. Its dual differential pairs (D1P/D1M and D2P/D2M) allow flexible placement - upstream toward the host transceiver or downstream toward the USB connector - with no signal inversion or protocol dependency. This bidirectional capability is intrinsic to the TUSB217AIRWBR architecture and requires no configuration change.

What role does the DCP/CDP pin play in the TUSB217AIRWBR's BC 1.2 functionality?

The DCP/CDP pin on the TUSB217AIRWBR determines whether the integrated BC 1.2 controller operates in Dedicated Charging Port (DCP) mode (pin low) or Charging Downstream Port (CDP) mode (pin high). With an internal 500 kΩ pull-up, the TUSB217AIRWBR defaults to CDP mode when unconnected. This pin enables dynamic switching - for example, setting DCP/CDP low when the host is inactive to provide charge-only mode, then high when active to enable data+charge - a core feature distinguishing the TUSB217AIRWBR from earlier variants.

Does the TUSB217AIRWBR support I2C configuration, and what can be controlled via I2C?

Yes, the TUSB217AIRWBR supports standard-mode (100 kHz) I2C via SDA and SCL pins (7-bit slave address 0x2C). Through I2C, users can read/write registers including EDGE_BOOST (0x1), DC_BOOST (0xE), RX_SEN (0x25), and CONFIGURATION (0x3) to dynamically adjust boost levels, equalization gain, and operational mode - enabling runtime calibration and diagnostics not possible with pin-strapping alone. This I2C capability is fully documented in the TUSB217AIRWBR datasheet and adds flexibility beyond the default resistor-based configuration.