Diodes Incorporated PI3EQX1004E2ZTFEX

Overview

PI3EQX1004E2ZTFEX from Diodes Incorporated is a 10.0 Gbps, 2-port USB 3.1 Gen-2 linear ReDriver IC with four 100Ω differential CML I/O pairs, programmable pin-adjustable equalization and flat gain, and automatic receiver detect functionality. It operates from a single 3.3V supply and supports signal extension across cables, PCB traces, or switch fabrics in high-speed USB host-peripheral interconnects.

For engineers reviewing the PI3EQX1004E2ZTFEX datasheet, PI3EQX1004E2ZTFEX pinout, PI3EQX1004E2ZTFEX application, or PI3EQX1004E2ZTFEX equivalent, key selection criteria include differential channel independence, slumber-mode power management, USB 3.1 SuperSpeed compliance, and CML I/O interface compatibility with protocol ASICs and USB controllers.

Technical Context

The PI3EQX1004E2ZTFEX implements two fully independent 10 Gbps channels, each with dedicated input-level detection, equalization (EQ), and flat-gain (FG) stages. Its linear ReDriver architecture preserves signal integrity without retiming, enabling transparent signal boosting for USB 3.1 Gen-2 links.

Each channel features automatic receiver detection with 7.3 ms idle timeout, transitioning to Unplug Mode or Slumber Mode based on load presence. Power management is adaptive and per-channel, with no external control required for low-power states.

Key Specifications

Pinout & Package

Package: 42-pin TQFN, 3.5 mm × 9.0 mm, 0.5 mm pitch (ZH42 footprint).

Key Features

Applications

Equivalent & Alternatives

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

Compared with PI3EQX1004B1ZHEX, the E2ZTFEX offers identical performance with updated green compliance and packaging; compared with TS3USB30E, it delivers true 10 Gbps linear redriving with autonomous power management-critical for Gen-2 signal integrity where switches fall short.

Availability

PI3EQX1004E2ZTFEX is available at Aetrix Electronics and suitable for USB 3.1 Gen-2 docking stations, external SSD enclosures, and thin-and-light notebook expansion interfaces requiring stable component supply and long-term design-in support.

Supply support for PI3EQX1004E2ZTFEX 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 analog ICs, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the U.S.

The PI3EQX1004 product line targets high-speed serial interface signal conditioning for USB, PCIe, and DisplayPort applications, emphasizing low-power linear redriving with minimal design overhead.

FAQ

What is the function of the EN_AB/EN_CD pins?

The EN_AB and EN_CD pins are hardware-enable inputs that control activation of Channel AB (pins RXAP/RXAN/TXAP/TXAN) and Channel CD (RXBP/RXBN/TXBP/TXBN), respectively. They accept 3.3V logic levels and default to active-high operation; pulling either low disables its associated channel pair, reducing dynamic power consumption without affecting the other channel's operation.

Does PI3EQX1004E2ZTFEX require external configuration registers or I²C programming?

No. The PI3EQX1004E2ZTFEX uses pin-strapped configuration for equalization and flat gain settings-no I²C bus, external EEPROM, or firmware initialization is needed. All operational parameters are set at power-on via resistor pulls on EQ_A–EQ_D and FG_A–FG_D pins, enabling immediate functionality after power-up.

How does the automatic receiver detect feature behave during hot-plug events?

Upon hot-plug, the receiver detect loop activates immediately upon signal presence detection. If the channel remains idle for >7.3 ms, it reinitiates detection; if no valid load is found, it enters Unplug Mode. When a compliant USB device reconnects, the channel automatically exits Unplug Mode and resumes normal operation within microseconds-no reset or enumeration delay is introduced.

Can PI3EQX1004E2ZTFEX be used with USB 3.0 (5 Gbps) sources and sinks?

Yes. The PI3EQX1004E2ZTFEX is backward-compatible with USB 3.0 (5 Gbps) signaling and maintains full compliance with USB-IF electrical specifications at both 5 Gbps and 10 Gbps. Its linear architecture ensures signal integrity enhancement across both data rates without mode switching or configuration changes.