Texas Instruments TUSB217RGYTQ1

Overview

TUSB217RGYTQ1 from Texas Instruments is an AEC-Q100 Grade 2 automotive-qualified USB 2.0 high-speed signal conditioner (redriver) that compensates AC/DC loss and ISI jitter in USB HS channels. It operates from 2.3 V to 6.5 V, supports up to 5 m cable length, delivers 480 Mbps data rate, and features programmable edge/DC boost plus tri-level RX sensitivity control via external resistors. It is deployed between USB host and connector in infotainment head units to restore near-end eye compliance.

For engineers reviewing the TUSB217RGYTQ1 datasheet, TUSB217RGYTQ1 pinout, TUSB217RGYTQ1 application, or TUSB217RGYTQ1 equivalent, key selection considerations include its automotive qualification (–40°C to 105°C), I²C-configurable or resistor-programmable gain settings, dual-directional HS signal conditioning without packet timing alteration, and daisy-chain capability for high-loss backplane or active-cable designs.

Technical Context

The TUSB217RGYTQ1 implements a patented dual-stage compensation architecture: edge boost sharpens transition edges while DC boost restores static signal levels-both configurable via BOOST pin pull-down resistor (4 discrete levels). Its RX_SEN pin provides three hardware-selectable receiver sensitivity tiers (low/medium/high) to counteract channel-induced intersymbol interference (ISI) jitter in long-cable or high-attenuation environments.

It operates transparently across USB signaling modes: LS/FS signals bypass conditioning; HS mode activates full redriver functionality with automatic detection and ENA_HS flag assertion. In I²C mode (SCL/SDA pulled high at power-up), it enables register-level control of EDGE_BOOST (0x1), DC_BOOST (0xE), and RX_SEN (0x25) with 7-bit slave address 0x2C.

Key Specifications

Pinout & Package

VQFN-14 (RGY) package, 3.50 mm × 3.50 mm, 0.5 mm pitch, exposed thermal pad (electrically isolated, optional ground connection).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TUSB217RGYTQ1, TUSB213RGETQ1 lacks VBAT compatibility and fine-grained boost control, while USB2514B-AEZG introduces hub logic overhead and larger footprint - making TUSB217RGYTQ1 optimal for minimal-footprint, low-latency, battery-rail-direct HS signal restoration.

Availability

TUSB217RGYTQ1 is available at Aetrix Electronics and suitable for automotive infotainment, industrial docking stations, and active-cable designs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TUSB217RGYTQ1 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 automotive, industrial, and personal electronics markets.

The TUSB217RGYTQ1 belongs to TI's automotive-qualified USB signal conditioning portfolio, designed specifically to solve high-speed signal integrity challenges in harsh-temperature, high-reliability vehicle subsystems such as head units and media gateways.

FAQ

What is the primary function of the TUSB217RGYTQ1 in a USB 2.0 system?

The TUSB217RGYTQ1 functions as a high-speed signal conditioner (redriver) that compensates for AC loss (capacitive), DC loss (resistive), and ISI jitter in USB 2.0 channels. It restores signal integrity without altering packet timing or adding propagation delay - critical for maintaining USB 2.0 compliance in automotive and industrial applications where trace loss or long cables degrade the HS eye diagram. The TUSB217RGYTQ1 achieves this through patented edge and DC boost circuitry, all while remaining fully transparent to the USB protocol stack.

Does the TUSB217RGYTQ1 support both USB host and device roles?

Yes, the TUSB217RGYTQ1 is host/device agnostic and operates bidirectionally on its D1P/D1M and D2P/D2M differential pairs. It automatically detects USB 2.0 high-speed handshaking regardless of direction and enables signal conditioning only during HS mode - supporting OTG 2.0 and BC 1.2 protocols without firmware intervention. This makes the TUSB217RGYTQ1 ideal for reversible USB connections in automotive head units or docking stations where role switching occurs dynamically.

How is gain configured on the TUSB217RGYTQ1 - via pins or registers?

The TUSB217RGYTQ1 supports dual configuration methods: hardware-based resistor programming and I²C register access. Boost level (edge + DC) is set via external pull-down resistor on the BOOST pin (4 discrete levels), while RX sensitivity is selected using pull-up/down states on RX_SEN (3 levels). Alternatively, in I²C mode (SCL/SDA pulled high at power-up), registers at offsets 0x1 (EDGE_BOOST), 0xE (DC_BOOST), and 0x25 (RX_SEN) allow dynamic adjustment - enabling runtime tuning without hardware changes. Both methods are valid for the TUSB217RGYTQ1.

Can multiple TUSB217RGYTQ1 devices be used together in one signal path?

Yes, the TUSB217RGYTQ1 supports daisy-chaining up to four units in series to compensate for extremely high channel loss - such as in backplane interconnects or ultra-long active cables exceeding 5 m. Each device independently conditions the signal, preserving USB timing integrity end-to-end. Cascading requires proper power sequencing and isolation of control pins (e.g., BOOST and RX_SEN) per stage; the TUSB217RGYTQ1's low 36 mA active current ensures thermal feasibility in multi-stage configurations.

What automotive qualification does the TUSB217RGYTQ1 hold?

The TUSB217RGYTQ1 is AEC-Q100 qualified for automotive applications at Grade 2, covering an operating ambient temperature range of –40°C to 105°C. It also meets HBM ESD Class 2 (±2 kV) and CDM Class C4A (±750 V) requirements per AEC-Q100-002 and AEC-Q100-011. These qualifications validate its reliability in demanding automotive environments like infotainment head units and media hubs - where the TUSB217RGYTQ1 is routinely deployed to ensure robust USB 2.0 HS connectivity under thermal, electrical, and mechanical stress.