Texas Instruments TUSB215RGYR

Overview

TUSB215RGYR from Texas Instruments is a USB 2.0 High-Speed signal conditioner with integrated BC 1.2 Charging Downstream Port (CDP) controller, designed to compensate for inter-symbol interference (ISI) in lossy channels while preserving LS/FS signal integrity. It supports 480 Mbps HS signaling, offers four AC boost levels via external EQ resistor, three DC boost settings (40/60/80 mV), and operates from 4.4–5.5 V. Used in host-side USB signal restoration before connectors in docking stations and tablets.

For engineers reviewing the TUSB215RGYR datasheet, TUSB215RGYR pinout, TUSB215RGYR application, or TUSB215RGYR equivalent, key selection criteria include HS eye mask compliance support, CDP controller capability, dual-port agnostic D1/D2 channel routing, ultra-low 0.76 mA suspend current, and VQFN-14 (3.5 × 3.5 mm) thermal performance with RθJA = 49.1°C/W.

Technical Context

The TUSB215RGYR implements a patent-pending, LS/FS-transparent analog signal conditioning architecture that applies programmable AC and DC gain only to High-Speed differential pairs-leaving Low/Full Speed signaling unaltered. Its dual-channel topology (D1P/M and D2P/M) is host/device agnostic and supports daisy-chaining for high-loss applications up to 5 m pre-channel or 2 m post-channel cable length.

Configuration occurs either via pin-strapping (EQ and DC_BOOST pins) or I²C (address 0x2C), with latched settings sampled at RSTN de-assertion. The device integrates a CDP controller for BC 1.2 handshake compliance and provides status flags (CD, ENA_HS) for system-level control, all while maintaining <1.5 mA idle current and ±2000 V HBM ESD rating.

Key Specifications

Pinout & Package

VQFN-14 package (3.50 mm × 3.50 mm, 0.5 mm pitch) with exposed thermal pad for enhanced heat dissipation. Pin 1 marked by dot; pins 2 and 3 are no-connect (NC).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TUSB216RGYR, TUSB215RGYR provides dual-port flexibility and daisy-chain support for complex routing; versus USB2514B-AEZG, it delivers lower power, smaller size, and tunable signal conditioning-making it optimal for host-side redriver + CDP integration where protocol handling is already managed externally.

Availability

TUSB215RGYR is available at Aetrix Electronics and suitable for USB docking stations, tablet host ports, notebook extension circuits, and active cable repeaters requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for TUSB215RGYR 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 signal chain and power management technologies.

The TUSB215RGYR belongs to TI's USB signal conditioning product line, engineered specifically to solve USB 2.0 High-Speed electrical compliance challenges in space-constrained, thermally demanding host applications-without compromising LS/FS interoperability or BC 1.2 charging functionality.

FAQ

What is the primary function of the TUSB215RGYR in a USB 2.0 host design?

The TUSB215RGYR serves as a High-Speed signal conditioner and BC 1.2 Charging Downstream Port (CDP) controller. It restores USB 2.0 HS signal integrity degraded by PCB trace loss or cable attenuation while simultaneously managing D+/D− handshake sequences for fast-charging negotiation-enabling compliant, robust host-side USB connectivity without requiring additional ICs.

How does the TUSB215RGYR handle Low Speed and Full Speed USB traffic?

The TUSB215RGYR is explicitly designed to be transparent to Low Speed (1.5 Mbps) and Full Speed (12 Mbps) signaling. Its patent-pending architecture bypasses LS/FS signals entirely-preserving their timing, voltage levels, and waveform shape-while applying only AC and DC boost to High-Speed (480 Mbps) differential pairs. This ensures full backward compatibility and zero impact on enumeration or control transfers.

Can the TUSB215RGYR be configured dynamically after power-up?

Yes-the TUSB215RGYR supports dynamic reconfiguration via its I²C interface (7-bit address 0x2C). After entering I²C mode (by pulling SDA and SCL high at reset), users can modify AC boost (ACB_LVL register, offset 0x01) and DC boost (DCB_LVL register, offset 0x0E) settings in real time. However, changes require toggling RSTN or issuing a CFG_ACTIVE bit toggle to restart the state machine and apply new values.

What are the thermal considerations for the TUSB215RGYR in continuous HS operation?

The TUSB215RGYR in VQFN-14 (RGY) package has a junction-to-ambient thermal resistance (RθJA) of 49.1°C/W. At maximum 30 mA active current and 5 V supply, power dissipation is ~150 mW. With proper PCB copper pour under the thermal pad and minimal ambient rise, junction temperature stays well within the 85°C limit for commercial-grade operation-even in enclosed docking station enclosures.

Is the TUSB215RGYR pin-compatible with other devices in the TUSB21x family?

The TUSB215RGYR shares the same VQFN-14 (RGY) footprint and pinout with TUSB214RGYR and TUSB216RGYR, but functional differences exist: TUSB214 lacks CDP support and I²C, while TUSB216 omits D2P/M pins and daisy-chain capability. Thus, TUSB215RGYR is not a direct drop-in replacement for those variants-board-level validation is required if substituting due to differing feature sets and register maps.