Texas Instruments TPD2E001DRSR

Overview

TPD2E001DRSR from Texas Instruments is a two-channel unidirectional ESD protection diode array in a 6-pin WSON (DRS) package, rated for ±8-kV contact and ±15-kV air-gap IEC 61000-4-2 Level 4 ESD suppression, with 1.5 pF typical channel capacitance and 1 nA maximum leakage current. It protects high-speed USB 2.0 differential data lines (D+, D–) while operating across 0.9 V to 5.5 V supply range.

For engineers reviewing the TPD2E001DRSR datasheet, TPD2E001DRSR pinout, TPD2E001DRSR application, or TPD2E001DRSR equivalent, this device serves as a low-capacitance, rail-to-rail ESD clamp for signal integrity-critical interfaces where layout proximity to connectors and minimal parasitic loading are essential design constraints.

Technical Context

The TPD2E001DRSR implements a central ESD clamp architecture with two internal diodes per IO line tied to VCC and GND, enabling bidirectional transient shunting during ±15-kV HBM or ±8-kV IEC contact events. Its uni-directional topology provides clamping only above VCC + VF and below GND – 0.6 V, avoiding forward conduction during normal signal swing.

It operates passively without bias current draw beyond 1 nA supply current, requires no external power, and relies on a 0.1-μF ceramic capacitor at VCC for effective ESD bypass. The DRS package features an exposed thermal pad (EP) connected to GND for enhanced thermal dissipation and EMI control.

Key Specifications

Pinout & Package

TPD2E001DRSR uses a 6-pin WSON (DRS) package with an exposed thermal pad (EP) that must be connected to GND for optimal thermal performance and ESD return path integrity. Pin 1 is located at the top-left corner of the top-side marking "ZWK", with pins numbered counter-clockwise.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPD2E001DRLR and TPD2E2U06DRLR, the TPD2E001DRSR delivers superior thermal performance (RθJB = 64.8 °C/W) and smaller footprint height (0.6 mm), making it optimal for medical imaging and ultra-thin industrial enclosures where heat dissipation and mechanical clearance are critical.

Availability

TPD2E001DRSR is available at Aetrix Electronics and suitable for USB 2.0 interface protection, medical glucose meter design, and LVDS camera link applications requiring stable component supply across extended product lifecycles.

Supply support for TPD2E001DRSR 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets since 1930.

The TPD2E001 family was designed specifically for high-speed data interface ESD protection, targeting USB, Ethernet, and LVDS applications where sub-2-pF capacitance and IEC Level 4 compliance are mandatory system requirements.

FAQ

What is the recommended PCB layout for TPD2E001DRSR in a USB 2.0 application?

Place TPD2E001DRSR within 3 mm of the USB connector, route IO1/IO2 traces straight with rounded corners (≥0.5 mm radius), and connect the exposed pad (EP) directly to a solid GND plane using ≥4 thermal vias. Avoid routing unprotected signals near protected traces to prevent EMI coupling during ESD events. The 0.1-μF VCC bypass capacitor must be placed adjacent to pin 1 with shortest possible loop.

Does TPD2E001DRSR require a VCC connection to function?

Yes - TPD2E001DRSR requires VCC to be connected to the system supply (0.9–5.5 V) for proper clamping behavior above VCC + VF. If VCC is left floating, the device tolerates up to 10 V signal swing but loses its positive-transient clamping capability. A 0.1-μF ceramic capacitor between VCC and GND is mandatory regardless of connection method to ensure low-impedance ESD return path.

Can TPD2E001DRSR protect both D+ and D– lines simultaneously during a common-mode ESD strike?

Yes - TPD2E001DRSR's internal architecture routes common-mode transients from IO1 and IO2 through the shared VCC and GND paths, enabling simultaneous clamping of differential and common-mode ESD events. Its matched 1.5-pF capacitance ensures balanced impedance, preserving USB 2.0 common-mode rejection ratio (CMRR) during ±15-kV air-gap discharges.

What is the maximum operating temperature for TPD2E001DRSR in continuous use?

TPD2E001DRSR is rated for continuous operation from –40°C to +85°C ambient temperature. At maximum ambient (85°C) and full IEC ±8-kV stress, junction temperature remains within safe limits (TJ ≤ 150°C) when the exposed pad is soldered to a 1-in² GND copper area - validated by RθJB = 64.8 °C/W and thermal simulation per JEDEC JESD51-7.

Is TPD2E001DRSR compliant with RoHS and REACH regulations?

Yes - TPD2E001DRSR is RoHS-compliant (lead-free, homogeneous material) and REACH-conformant, with NIPDAU lead finish and no SVHC substances above threshold. The part marking "ZWK" and packaging label confirm compliance, and full declarations are available in TI's Material Content Database under orderable number TPD2E001DRSRG4.B.