Diodes Incorporated PI3EQX1002BZLEX

Overview

PI3EQX1002BZLEX from Diodes Incorporated is a 1-port, 10.0 Gbps USB 3.1 Gen-2 linear ReDriver IC with programmable equalization, flat gain, and linear swing control. It interfaces between USB protocol ASICs and downstream devices (e.g., cables, switches, or external storage), supporting two independent 100Ω differential CML I/O pairs and automatic receiver detection for dynamic power management.

For engineers reviewing the PI3EQX1002BZLEX datasheet, PI3EQX1002BZLEX pinout, PI3EQX1002BZLEX application, or PI3EQX1002BZLEX equivalent, key selection criteria include its 10 Gbps linear redriving capability, slumber-mode power state transition timing (7.3 ms idle timeout), and pin-strapped EQ/SW/FG configuration - critical for USB 3.1 signal integrity over lossy PCB traces or cables.

Technical Context

The PI3EQX1002BZLEX implements a linear redriving architecture-not retiming-preserving USB 3.1 Gen-2 NRZ signaling integrity without clock-data recovery. Its dual-channel design operates fully independently, each with dedicated input-level detection logic that triggers output activation only when valid differential signal amplitude exceeds threshold.

Equalization is applied pre-buffer via analog adaptive circuitry; flat gain and output swing are set per channel using external resistor networks on EQA/EQB, SWA/SWB, and FGA/FGB pins. Receiver detect logic monitors RXAP/RXAN and RXBP/RXBN continuously, reinitiating detection after 7.3 ms of inactivity and transitioning to Unplug or Slumber Mode based on load presence.

Key Specifications

Pinout & Package

Package: 30-pin TQFN, 2.5 mm × 4.5 mm, 0.4 mm pitch, ZL30 footprint (exposed thermal pad).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB 3.1 linear redriving applications.

Compared with PI3EQX1002BZLEX, the B1 variant adds ESD hardening and thermal optimization but requires PCB redesign, while TS3USB30E trades configurability and Gen-2 support for lower BOM cost and simpler integration in Gen-1-only systems.

Availability

PI3EQX1002BZLEX is available at Aetrix Electronics and suitable for USB 3.1 Gen-2 docking stations, Type-C monitor hubs, and mobile peripheral adapters requiring stable component supply through extended product lifecycles.

Supply support for PI3EQX1002BZLEX 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 semiconductor company specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity applications.

The PI3EQX1002BZLEX belongs to Diodes' high-speed interface product line, engineered specifically to extend USB 3.1 Gen-2 reach across lossy interconnects while maintaining strict protocol transparency and low-power responsiveness.

FAQ

What is the function of the RXDET_EN pin?

RXDET_EN is an active-high enable input for the automatic receiver detection circuit. When asserted, it activates continuous monitoring of RXAP/RXAN and RXBP/RXBN for valid differential signal presence. Deasserting it disables detection, forcing both channels into Slumber Mode regardless of input activity - useful for system-level power gating during suspend states.

Can PI3EQX1002BZLEX operate at USB 3.0 (5 Gbps) speeds?

Yes. The device is fully backward compatible with USB 3.0 and automatically adapts to 5 Gbps signaling without configuration changes. Its linear redriving architecture preserves the NRZ waveform at both speeds, and all EQ/SW/FG settings remain effective - though less equalization may be needed for shorter 5 Gbps interconnects.

Is external clocking required for operation?

No. The PI3EQX1002BZLEX is a linear redriver and does not require any external clock source. It operates synchronously with the incoming data stream, recovering no clock - unlike retimers - making it transparent to USB 3.1 link training and protocol layer operations.

How does slumber mode reduce power consumption?

In Slumber Mode, the PI3EQX1002BZLEX disables all analog signal paths except the input-level detection circuitry, reducing quiescent current to under 100 µA per channel. This state is entered automatically after 7.3 ms of signal inactivity and exited instantly upon detection of valid input amplitude, enabling zero-latency wake-up for bursty USB traffic.