Texas Instruments TPD2EUSB30ADRTR

Overview

TPD2EUSB30ADRTR from Texas Instruments is a 2-channel unidirectional ESD protection diode array in a 3-pin SOT-9X3 (DRT) package, designed for USB 3.0 SuperSpeed differential data lines (D+/D−). It delivers 8-kV IEC 61000-4-2 contact ESD protection, 5-A IEC 61000-4-5 surge rating, 0.7-pF typical IO-to-GND capacitance, 0.6-Ω dynamic resistance, and supports 5-Gbps data rates with <2-ps jitter penalty.

For engineers reviewing the TPD2EUSB30ADRTR datasheet, TPD2EUSB30ADRTR pinout, TPD2EUSB30ADRTR application, or TPD2EUSB30ADRTR equivalent, this device is selected for high-fidelity USB 3.0 interface protection where low capacitive loading, fast clamping response, and flow-through routing are critical to signal integrity in portable computing and media devices.

Technical Context

The TPD2EUSB30ADRTR implements a passive TVS diode array with two back-to-back ESD clamps between D+ and GND and D− and GND. Its uni-directional architecture features a 4.5-V DC breakdown voltage (V_BR) and 8-V clamp voltage (V_CLAMP) at 1-A transient current, enabling robust protection without interfering with 0–3.6-V USB 3.0 signal swing.

It operates across –40°C to +85°C, requires no external power, and relies on low-impedance GND connection via its dedicated pin to shunt ESD energy within nanoseconds. The DRT package's flow-through pin mapping (D+, D−, GND) preserves differential pair coupling and minimizes stub length-critical for maintaining >7.4-Gbps bandwidth (–3-dB insertion loss point).

Key Specifications

Pinout & Package

SOT-9X3 (DRT) package: 1.0 mm × 1.0 mm body, 0.55-mm max height, 3-pin single-row layout with flow-through configuration optimized for differential USB 3.0 routing.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ESD protection applications.

Compared with TPD2EUSB30DRTR and SZ1.8SMCG-TP, the TPD2EUSB30ADRTR uniquely balances 4.5-V low-voltage triggering, 8-kV ESD immunity, 5-A surge capability, and 0.7-pF capacitance-making it the only option qualified for production USB 3.0 SuperSpeed interfaces demanding full IEC compliance and signal fidelity.

Availability

TPD2EUSB30ADRTR is available at Aetrix Electronics and suitable for notebook, set-top box, and portable media player designs requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.

Supply support for TPD2EUSB30ADRTR 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 precision analog, power management, and interface protection technologies.

The TPDxEUSB30 family was developed specifically to protect high-speed differential interfaces-including USB 3.0, SATA, and PCIe-from ESD and surge events while preserving signal integrity through ultra-low capacitance and optimized package routing.

FAQ

What is the maximum data rate supported by the TPD2EUSB30ADRTR without degrading signal integrity?

The TPD2EUSB30ADRTR supports USB 3.0 SuperSpeed data rates up to 5 Gbps with verified <2-ps jitter penalty. Its –3-dB insertion loss bandwidth is 7.4 Gbps (per Figure 6-7), confirming suitability for full-speed USB 3.0 operation. This performance is achieved via 0.7-pF IO-to-GND capacitance and flow-through DRT package routing, both validated in TI's eye diagram testing with TPD2EUSB30ADRTR on reference boards.

Does the TPD2EUSB30ADRTR require a power supply or bias voltage to operate?

No, the TPD2EUSB30ADRTR is a passive ESD protection device and requires no external power supply or bias voltage. It functions solely through its internal TVS diode structure, activating only during overvoltage transients (e.g., ESD or surge events) when the D+/D− voltage exceeds its 4.5-V breakdown threshold. Normal USB 3.0 signaling (0–3.3 V) remains unaffected, and no quiescent current flows through TPD2EUSB30ADRTR during steady-state operation.

What is the recommended PCB layout practice for optimal ESD performance with the TPD2EUSB30ADRTR?

Place the TPD2EUSB30ADRTR as close as possible to the USB 3.0 connector-ideally within 3 mm-to minimize unprotected trace length. Route D+ and D− traces straight through the device using flow-through pins, avoid vias or sharp corners, and connect the GND pin to the main ground plane via a large-diameter via (≥0.3 mm) or wide copper pour. This ensures low-inductance ESD current return path, critical for handling >30-A transient currents per IEC 61000-4-2 testing.

How does the TPD2EUSB30ADRTR differ from the TPD2EUSB30DRTR in terms of electrical specifications?

The TPD2EUSB30ADRTR has a 4.5-V DC breakdown voltage (V_BR) and 0–3.6-V operating voltage range, optimized for 3.3-V USB 3.0 PHYs. In contrast, the TPD2EUSB30DRTR specifies 7-V V_BR and 0–5.5-V operation, making it suitable for 5-V tolerant interfaces. Both share identical DRT packaging, 0.7-pF capacitance, 8-kV ESD rating, and 5-A surge capability-but their trigger thresholds target different voltage domains, so substitution requires validation against the host IC's absolute maximum ratings.

Is the TPD2EUSB30ADRTR compliant with international ESD and surge immunity standards?

Yes, the TPD2EUSB30ADRTR is explicitly rated per IEC 61000-4-2 Level 4 (±8 kV contact discharge) and IEC 61000-4-5 (5 A, 8/20 µs surge current) standards. These ratings are confirmed in Section 6.2 and 6.1 of the official TI datasheet SLVSAC2G. The device is designed to enable end-equipment compliance with these standards when correctly implemented-i.e., placed adjacent to the connector with proper GND layout-without requiring additional protection components.