Diodes Incorporated PI3EQX1002EZREX

Overview

PI3EQX1002EZREX from Diodes Incorporated is a 1-port, 10.0 Gbps USB 3.1 Gen-2 linear ReDriver IC with programmable receiver equalization, output swing, and flat gain; supports two independent 100Ω differential CML I/O pairs; operates from single 3.3V supply; used in USB host-to-peripheral signal integrity extension for notebooks, external storage, and docking stations.

For engineers reviewing the PI3EQX1002EZREX datasheet, PI3EQX1002EZREX pinout, PI3EQX1002EZREX application, or PI3EQX1002EZREX equivalent, key selection criteria include differential channel independence, slumber-mode power management, automatic receiver detect timing (7.3 ms idle timeout), CML I/O compatibility, and TQFN-24 package thermal performance in high-speed PCB layouts.

Technical Context

The PI3EQX1002EZREX implements a linear ReDriver architecture-not retiming-preserving USB 3.1 Gen-2 10 Gbps NRZ signaling integrity via analog equalization and gain control. Each of its two differential channels (A/B) features independent input-level detection logic that drives output buffer activation and slumber-mode entry.

It integrates pin-strapped control for EQ level (5 settings), output swing (4 settings), and flat gain (3 settings), enabling optimization across varying trace lengths and cable losses without firmware or I²C interface. Automatic receiver detect resets channel state after ≥7.3 ms of signal absence, transitioning to Unplug or Slumber Mode based on load presence.

Key Specifications

Pinout & Package

ZR24 package: 24-contact, very very thin quad flat no-lead (TQFN), 2.5 mm × 2.5 mm body, 0.4 mm pitch, exposed thermal pad (EP), RoHS 3 & halogen-free "Green" compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB 3.1 Gen-2 ReDriver applications.

Compared with TS3USB30E, PI3EQX1002EZREX delivers true 10 Gbps Gen-2 signal restoration with adaptive power management; versus PI3EQX1002BZREX, it offers field-tunable equalization and gain for variable-loss environments-critical for USB-C docking and modular enclosures.

Availability

PI3EQX1002EZREX is available at Aetrix Electronics and suitable for USB-C docking stations, external NVMe SSD enclosures, notebook internal signal routing, and USB 3.1 Gen-2 hub interfaces requiring stable component supply and long-term production continuity.

Supply support for PI3EQX1002EZREX 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and integrated circuits, specializing in high-performance analog, logic, and connectivity solutions for consumer, computing, and industrial markets.

The PI3EQX1002EZREX belongs to Diodes' Pericom-branded ReDriver product line, engineered specifically to extend USB 3.1 Gen-2 signal reach in space-constrained, thermally demanding USB-C endpoints and docks.

FAQ

What is the function of the RXDET_EN pin?

RXDET_EN enables the automatic receiver detection loop that monitors input signal presence. When asserted high, it allows each channel to detect idle periods ≥7.3 ms and transition to Slumber or Unplug Mode accordingly. If held low, receiver detection is disabled and channels remain active regardless of input activity.

Does PI3EQX1002EZREX require an external clock or reference?

No. The PI3EQX1002EZREX is a linear ReDriver and does not incorporate clock data recovery (CDR). It operates entirely on the incoming data signal, preserving native USB 3.1 timing without requiring external clocks, PLLs, or reference oscillators - reducing system complexity and jitter sources.

Can both channels be used simultaneously for a single 2-lane USB 3.1 connection?

Yes. Channel A and Channel B can drive separate differential lanes of a single USB 3.1 Gen-2 link (e.g., TX1/RX1 and TX2/RX2 in dual-lane configurations). Each channel is electrically independent, allowing individual EQ, swing, and flat gain tuning to match asymmetric trace losses.

What thermal considerations apply to the ZR24 package?

The ZR24 TQFN package features an exposed thermal pad requiring solder connection to a dedicated PCB copper pour. For continuous 10 Gbps operation, Diodes recommends ≥100 mm² of 2-oz copper under the EP with ≥4 thermal vias (0.3 mm diameter) to internal ground planes to maintain junction temperature below 115°C at 3.3V/25°C ambient.