Texas Instruments TUSB215QRGYRQ1

Overview

TUSB215QRGYRQ1 from Texas Instruments is an automotive-qualified USB 2.0 High-Speed signal conditioner with integrated BC1.2 Charging Downstream Port (CDP) controller. It compensates for inter-symbol interference (ISI) in lossy channels, supports LS/FS/HS signaling without altering low-speed signals, delivers up to 80 mV DC boost and four selectable AC boost levels, and operates across –40°C to 105°C ambient temperature - enabling robust USB connectivity in automotive infotainment head units.

For engineers reviewing the TUSB215QRGYRQ1 datasheet, TUSB215QRGYRQ1 pinout, TUSB215QRGYRQ1 application, or TUSB215QRGYRQ1 equivalent, key selection considerations include its dual-role as both a signal integrity enhancer (supporting up to 5 m pre-channel or 2 m post-channel cable length) and a CDP controller for host-side charging handshaking, its VQFN-14 (3.5 mm × 3.5 mm) package with thermal pad, and its AEC-Q100 Grade 2 qualification.

Technical Context

The TUSB215QRGYRQ1 implements a patent-pending, host/device-agnostic architecture that conditionally applies AC and DC boost only during High-Speed (480 Mbps) mode while transparently passing Low-Speed and Full-Speed signals. Its signal compensation is triggered automatically upon HS detection via chirp handshake, with configuration latched at RSTN de-assertion.

It features dual differential I/O pairs (D1P/D1M and D2P/D2M) supporting flexible placement - either between host/hub and connector (D1 facing host, D2 facing receptacle) or reversed - and integrates status flags (CD for connection detect, ENA_HS for HS mode assertion) alongside I²C (0x2C) or pin-strapped configuration for AC/DC gain tuning.

Key Specifications

Pinout & Package

VQFN-14 (RGY) package with 3.50 mm × 3.50 mm body size and exposed thermal pad - optimized for compact automotive PCB layouts and thermal dissipation (R_θJA = 49.1°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB signal conditioning and BC1.2 CDP applications.

Compared with TUSB215QRGYRQ1, TUSB216RGET omits automotive qualification and thermal robustness, while USB2244-AEZG-03 shifts signal conditioning responsibility to external components - making TUSB215QRGYRQ1 the only single-chip solution combining AEC-Q100-compliant HS equalization, BC1.2 CDP control, and flexible pin/I²C configuration in a 3.5 mm × 3.5 mm footprint.

Availability

TUSB215QRGYRQ1 is available at Aetrix Electronics and suitable for automotive infotainment, industrial docking stations, and USB-C legacy adapter designs requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant performance.

Supply support for TUSB215QRGYRQ1 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 designing analog, embedded processing, and wireless chips for industrial, automotive, and personal electronics markets.

The TUSB215QRGYRQ1 belongs to TI's automotive-qualified USB signal conditioning product line, engineered specifically to solve HS signal integrity degradation in electrically noisy, thermally demanding vehicle subsystems while integrating essential BC1.2 charging control.

FAQ

What is the primary function of the TUSB215QRGYRQ1 in a USB 2.0 system?

The TUSB215QRGYRQ1 functions as a High-Speed (480 Mbps) signal conditioner that compensates for inter-symbol interference (ISI) and DC attenuation in lossy transmission channels - such as long PCB traces or cables - while leaving Low-Speed and Full-Speed USB signaling completely unaffected. It also integrates a BC1.2 Charging Downstream Port (CDP) controller, enabling autonomous charging handshaking without host software involvement. This dual capability makes TUSB215QRGYRQ1 especially valuable in automotive head units where signal integrity and plug-and-play charging must coexist reliably.

How does the TUSB215QRGYRQ1 handle USB Low-Speed and Full-Speed traffic?

The TUSB215QRGYRQ1 is explicitly designed to be transparent to USB Low-Speed (1.5 Mbps) and Full-Speed (12 Mbps) signals: it detects these modes automatically and disables all signal conditioning circuitry, allowing LS/FS data and control packets to pass unaltered with no added delay, jitter, or voltage shift. This behavior is confirmed in the datasheet's functional description and verified in application schematics where D1P/D1M and D2P/D2M remain fully operational during enumeration and control transfers - ensuring backward compatibility while preserving TUSB215QRGYRQ1's core HS signal restoration role.

Can the TUSB215QRGYRQ1 be configured without using I²C?

Yes, the TUSB215QRGYRQ1 supports full pin-strapped configuration: AC boost level is selected via an external pulldown resistor on the EQ pin, and DC boost level (40/60/80 mV) is set using a tri-level input on the DC_BOOST pin. These settings are sampled once at power-on reset (RSTN de-assertion) and require no firmware or I²C interface. This mode is ideal for cost-sensitive or resource-constrained automotive systems where simplicity and reliability outweigh dynamic reconfiguration needs - and TUSB215QRGYRQ1 remains fully functional in this configuration for all specified HS conditioning and CDP tasks.

What is the maximum supported cable length when using the TUSB215QRGYRQ1?

The TUSB215QRGYRQ1 supports up to 5 meters of pre-channel cable (between host and TUSB215QRGYRQ1) or 2 meters of post-channel cable (between TUSB215QRGYRQ1 and USB device), as validated in TI's application reports and eye diagram testing. This capability stems from its combined AC boost (correcting high-frequency loss) and DC boost (compensating for baseline wander), which together restore signal integrity sufficient to pass USB-IF HS electrical compliance tests - including far-end eye mask requirements - even with significant channel loss. Real-world performance depends on specific cable quality and PCB layout, but TUSB215QRGYRQ1's specifications guarantee operation within these bounds under recommended conditions.

Does the TUSB215QRGYRQ1 require external passive components for basic operation?

Yes, the TUSB215QRGYRQ1 requires three mandatory external components for reliable operation: a 0.1 µF ceramic 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 with proper timing), and a pull-down resistor on the EQ pin (to select AC boost level). Optional components include resistors on DC_BOOST for DC gain selection and 4.7 kΩ pull-ups on SDA/SCL if using I²C mode. All values and placement guidelines are specified in the datasheet's "Power Supply Recommendations" and "Typical Application" sections - and omitting the VREG or RSTN capacitors risks unstable HS operation or improper reset sequencing in TUSB215QRGYRQ1.