Diodes Incorporated PI3EQX7502BZDEX

Overview

PI3EQX7502BZDEX from Diodes Incorporated is a USB 3.0-compliant 5.0 Gbps single-port ReDriver IC with programmable equalization, de-emphasis, and input threshold control. It conditions differential CML signals across 100 Ω paths between protocol ASICs and connectors/cables, supporting industrial temperature range (−40°C to +85°C), 3.3 V supply, and auto slumber mode for power optimization in external storage and digital camera interfaces.

For engineers reviewing the PI3EQX7502BZDEX datasheet, PI3EQX7502BZDEX pinout, PI3EQX7502BZDEX application, or PI3EQX7502BZDEX equivalent, key selection criteria include differential signal integrity tuning, per-channel squelch behavior, receiver detect timing (7.3 ms idle timeout), and low-power state transitions (standby vs. slumber modes).

Technical Context

The PI3EQX7502BZDEX implements a two-stage signal conditioning architecture: an adjustable equalizer at the input stage compensates for high-frequency loss, followed by a limiting amplifier and programmable de-emphasis at the output. Each of its two independent 5.0 Gbps differential channels supports CML I/O with 100 Ω termination.

It integrates per-channel signal detection logic that triggers squelch when input amplitude falls below Vth−, driving outputs to common-mode voltage. Receiver detect activation is controlled digitally via RXD-EN, initiating a 7.3 ms idle monitoring window before transitioning to Unplug or Slumber Mode.

Key Specifications

Pinout & Package

Package: 24-pin TQFN (4 mm × 4 mm, 0.5 mm pitch, exposed thermal pad).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB 3.0 signal conditioning applications.

Compared with TI TUSB211IRWBR and Microchip USB3202-AEZG, the PI3EQX7502BZDEX uniquely combines per-channel squelch, programmable equalization, and autonomous slumber mode-enabling robust, low-power USB 3.0 signal extension in thermally constrained, hot-pluggable peripheral designs.

Availability

PI3EQX7502BZDEX is available at Aetrix Electronics and suitable for external storage docks, digital camera modules, multi-function printers, and tablet docking hubs requiring stable component supply across industrial temperature ranges and long-lifecycle production programs.

Supply support for PI3EQX7502BZDEX 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, specializing in high-performance signal integrity, power management, and protection solutions for industrial, computing, and consumer markets.

The PI3EQX7502BZDEX belongs to Diodes' ReDriver™ product line, engineered specifically to extend USB 3.0 reach without protocol modification-targeting compact, low-power peripheral interconnects where signal loss exceeds native PHY capability.

FAQ

What is the function of the RXD-EN pin?

The RXD-EN pin enables or disables the automatic receiver detection loop. When pulled high, it activates a 7.3 ms idle monitoring window per channel. If no valid load is detected during this period, the channel enters Unplug Mode; otherwise, it transitions to Slumber Mode. This supports hot-plug reliability without host firmware involvement.

How does the PI3EQX7502BZDEX handle signal loss compensation?

It uses pin-configurable input equalization (via EQ1/EQ2 pins) to apply up to 15 dB of high-frequency gain at 2.5 GHz, restoring signal integrity degraded by PCB trace or cable loss. Unlike retimers, it operates transparently without clock-data recovery, preserving native USB 3.0 timing and protocol transparency.

Can both channels operate independently?

Yes. EN_1# and EN_2# control each channel separately. Input squelch, output drive, and slumber entry are fully isolated. A channel in standby (EN_x# = 1) draws <10 µA, while the other remains active at full 5.0 Gbps performance-ideal for asymmetric peripheral configurations.

Is the PI3EQX7502BZDEX compliant with USB-IF certification requirements?

Yes. It meets USB 3.0 SuperSpeed electrical compliance per USB-IF specifications, including jitter tolerance, eye diagram mask, and common-mode voltage limits. Diodes Incorporated provides USB-IF test reports and reference design validation data for interoperability with certified hosts and devices.