Texas Instruments TUSB213RGYR

Overview

TUSB213RGYR from Texas Instruments is a USB 2.0 High-Speed signal conditioner IC designed to restore signal integrity in lossy USB channels. It supports LS/FS/HS signaling, provides programmable AC boost (4 levels) and DC boost (40/60/80 mV), and operates with 5 V supply. Used in notebook docking stations to pass USB HS near-end eye mask compliance at the connector.

For engineers reviewing the TUSB213RGYR datasheet, TUSB213RGYR pinout, TUSB213RGYR application, or TUSB213RGYR equivalent, key selection considerations include HS channel compensation capability, host/device-agnostic D1P/D1M and D2P/D2M port interchangeability, I²C or pin-strapped configuration, ultra-low disconnect power (0.86 mA), and support for up to 5 m pre-channel cable length.

Technical Context

The TUSB213RGYR implements a patent-pending analog signal conditioning architecture that selectively compensates only USB 2.0 High-Speed (480 Mbps) differential signals while leaving Low-Speed and Full-Speed traffic completely transparent. Its dual-path design allows flexible placement-either near the USB connector (to pass near-end eye mask) or near the USB PHY (to pass far-end eye mask).

Configuration is achieved via either pin-strapping (EQ for AC boost, DC_BOOST for DC gain) or 100 kHz I²C interface (7-bit address 0x2C). The device asserts CD on connection detection and ENA_HS upon successful HS handshake, enabling system-level status monitoring without protocol stack involvement.

Key Specifications

Pinout & Package

VQFN-14 (RGY) package, 3.50 mm × 3.50 mm, 0.5 mm pitch, thermally enhanced with exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TUSB213RGYR, TUSB214RGYR offers integrated LDO simplification but identical signal conditioning performance, while PI3USB30532ZLEX extends functionality to USB 3.0 but sacrifices DC boost flexibility and 5 V native operation - making TUSB213RGYR optimal for cost-sensitive, 5 V-only, long-cable USB 2.0 applications.

Availability

TUSB213RGYR is available at Aetrix Electronics and suitable for notebook docking stations, industrial USB hubs, active cable extenders, and tablet peripheral interfaces requiring stable component supply across extended product lifecycles.

Supply support for TUSB213RGYR 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The TUSB213RGYR belongs to TI's USB signal integrity portfolio, engineered specifically to solve high-loss channel challenges in USB 2.0 host and peripheral designs without altering protocol behavior or requiring firmware updates.

FAQ

What is the primary function of the TUSB213RGYR in a USB 2.0 system?

The TUSB213RGYR functions as a High-Speed signal conditioner that restores USB 2.0 HS signal integrity by applying programmable AC and DC boost to compensate for channel loss - without affecting Low-Speed or Full-Speed traffic. It ensures compliance with USB-IF electrical specifications at the connector, making it essential in designs with long traces, flex cables, or high-loss PCB materials. The TUSB213RGYR achieves this while maintaining full USB 2.0, OTG 2.0, and BC 1.2 interoperability.

How does the TUSB213RGYR handle Low-Speed and Full-Speed USB traffic?

The TUSB213RGYR is explicitly designed to be transparent to Low-Speed (1.5 Mbps) and Full-Speed (12 Mbps) USB signals - its patent-pending architecture bypasses LS/FS traffic without amplification, attenuation, or delay. This preserves enumeration timing, avoids compatibility issues with legacy HID devices, and eliminates the need for speed-mode negotiation. The TUSB213RGYR only activates its compensation circuitry upon detecting a valid High-Speed handshake, ensuring zero impact on non-HS operation.

Can the TUSB213RGYR be configured without using I²C?

Yes, the TUSB213RGYR supports pin-strapped configuration via the EQ and DC_BOOST pins, eliminating the need for I²C control in most applications. EQ sets AC boost level using an external pulldown resistor (160 Ω to 6 kΩ); DC_BOOST configures DC gain (40/60/80 mV) via tri-level voltage (L/M/H). Configuration is latched at RSTN de-assertion, so toggling RSTN is required to update settings. I²C (address 0x2C) is optional and used only for dynamic runtime adjustment or status monitoring.

What is the significance of the CD and ENA_HS pins on the TUSB213RGYR?

The CD (Connection Detect) pin asserts high when a USB device is attached - detected via DP or DM pull-up resistor - and remains active in LS, FS, and HS modes. The ENA_HS pin asserts high only after successful High-Speed handshake detection (chirp J/K pair within 18–128 µs), providing unambiguous confirmation of HS link establishment. Both are open-drain outputs with 2.4 V VOH and 0.4 V VOL, enabling direct interfacing with host GPIOs for system-level event handling. These flags operate independently of the TUSB213RGYR's signal conditioning path.

Does the TUSB213RGYR require external passive components for basic operation?

Yes, the TUSB213RGYR requires three mandatory external components: a 0.1 µF capacitor from VREG to GND to stabilize the internal 1.8 V LDO; a 0.1 µF capacitor from RSTN to GND if not actively driven by a microcontroller; and pull-up resistors (4.7 kΩ) on SDA/SCL only if I²C mode is enabled. For pin-strapped operation, external resistors on EQ and DC_BOOST pins are required to set AC/DC boost levels. No series resistors, ferrites, or additional termination are needed - the TUSB213RGYR drives standard 90 Ω differential lines directly.