Texas Instruments TUSB213IRGYR

Overview

TUSB213IRGYR from Texas Instruments is a USB 2.0 High-Speed signal conditioner IC designed to restore signal integrity in lossy USB channels. It compensates for inter-symbol interference (ISI) in HS (480 Mbps) signals while transparently passing LS/FS traffic, supports up to 5 m pre-channel or 2 m post-channel cable lengths, and features programmable AC/DC boost via EQ and DC_BOOST pins for compliance with USB electrical specifications in notebooks, docking stations, and active cables.

For engineers reviewing the TUSB213IRGYR datasheet, TUSB213IRGYR pinout, TUSB213IRGYR application, or TUSB213IRGYR equivalent, this page delivers verified technical context, real-world signal conditioning parameters, validated pin functions, and confirmed alternative options for USB HS channel compensation design.

Technical Context

The TUSB213IRGYR implements a patent-pending, host/device-agnostic architecture that conditionally applies equalization only to High-Speed differential pairs (D1P/D1M and D2P/D2M), leaving Low-Speed and Full-Speed signaling unaltered. Its dual-stage compensation combines selectable AC boost (four levels via external EQ pulldown resistor) and tri-level DC boost (40/60/80 mV via DC_BOOST pin strap) to correct both high-frequency attenuation and low-frequency droop.

It operates in five functional modes-LS, FS, HS, Shutdown, and I²C configuration-with automatic mode detection and status flag outputs (CD for connection detect, ENA_HS for HS active indication). The device integrates a 1.8-V LDO (VREG output) enabled only during HS operation and supports both pin-strapped and I²C (address 0x2C) configuration of AC/DC gain settings.

Key Specifications

Pinout & Package

VQFN-14 package (RGY), 3.50 mm × 3.50 mm body size, 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 TS3USB221ERSER and USB2514B-AEZG, the TUSB213IRGYR uniquely delivers field-tunable, dual-stage (AC+DC) equalization for loss compensation-enabling design flexibility across diverse channel topologies where passive switches or fixed-hub PHYs fall short.

Availability

TUSB213IRGYR is available at Aetrix Electronics and suitable for USB docking stations, active extension cables, notebook internal routing, and USB-C Alt Mode adapters requiring stable component supply and consistent signal integrity performance across production volumes.

Supply support for TUSB213IRGYR 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, signal chain, and power management technologies.

The TUSB213IRGYR belongs to TI's USB signal conditioning product line, engineered specifically to solve high-speed signal degradation in USB 2.0 host, device, and cable applications where channel loss threatens electrical compliance and link reliability.

FAQ

What is the primary function of the TUSB213IRGYR in a USB 2.0 system?

The TUSB213IRGYR is a dedicated USB 2.0 High-Speed signal conditioner that restores signal integrity by compensating for inter-symbol interference (ISI) in lossy channels. It applies programmable AC and DC boost exclusively to 480 Mbps HS differential signals while leaving LS/FS traffic unaffected. This enables reliable USB HS operation in applications like docking stations and active cables where trace or cable loss would otherwise cause eye mask failure. The TUSB213IRGYR achieves this without altering protocol behavior or requiring changes to host/device firmware.

How does the TUSB213IRGYR handle Low-Speed and Full-Speed USB traffic?

The TUSB213IRGYR is explicitly designed to be agnostic to Low-Speed (1.5 Mbps) and Full-Speed (12 Mbps) USB signaling. Its patent-pending architecture bypasses LS/FS differential pairs without applying any gain, equalization, or delay-preserving original signal timing, voltage levels, and waveform shape. This ensures full backward compatibility with legacy USB devices and avoids unintended side effects such as timing skew or false disconnect detection. The TUSB213IRGYR automatically detects LS/FS mode and disables its HS compensation circuitry, confirming correct operation via the CD pin assertion.

Can the TUSB213IRGYR be used in both host-side and device-side USB configurations?

Yes, the TUSB213IRGYR is host/device agnostic and supports reversible channel orientation: D1P/D1M can face the host/hub while D2P/D2M face the connector-or vice versa. Its automatic mode detection identifies LS/FS/HS links regardless of direction, and status flags (CD, ENA_HS) operate identically in either configuration. This flexibility allows the same TUSB213IRGYR to condition signals in host-attached docks, device-side active cables, or embedded hubs without hardware modification. Pin functions and boost settings remain identical across orientations.

What are the key differences between AC boost and DC boost in the TUSB213IRGYR?

AC boost in the TUSB213IRGYR corrects high-frequency attenuation (e.g., from skin effect and dielectric loss) using four selectable levels set by an external pulldown resistor on the EQ pin. DC boost addresses low-frequency droop (e.g., from capacitive loading and cable resistance) with three fixed levels (40/60/80 mV) selected via the DC_BOOST pin strap. AC boost improves edge rate and eye opening; DC boost restores signal baseline and common-mode voltage. Both operate simultaneously and are latched at reset-requiring RSTN toggling to apply new settings. The TUSB213IRGYR's dual-stage approach enables fine-grained optimization for diverse channel loss profiles.

Does the TUSB213IRGYR require external components for basic operation?

Yes, the TUSB213IRGYR requires three mandatory external components: a 0.1-µF ceramic capacitor from VREG to GND for LDO stabilization, a 0.1-µF capacitor from VCC to GND for supply decoupling, and a reset timing capacitor from RSTN to GND (if not actively driven by a microcontroller). Optional components include the EQ pulldown resistor (for AC boost selection) and DC_BOOST pull-up/pull-down resistors (for DC boost level). No external termination or biasing is needed on D1P/D1M or D2P/D2M-those pins are internally matched to 90 Ω differential impedance. All required values and placement guidance are specified in the TUSB213IRGYR datasheet.