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HomeProductsIntegrated Circuits (ICs)Interface - Signal Buffers, Repeaters, SplittersPI2EQX638XUBEX
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PI2EQX638XUBEX - Diodes Incorporated

Manufacturer Part Number
PI2EQX638XUBEX
Manufacturer
Diodes Incorporated
Allelco Part Number
32D-PI2EQX638XUBEX
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
62,320 pcs available, New & Original
Parts Description
USB3 EQX X2-QFN2020-18 T&R 3.5K
Package
18-X2QFN (2x2)
Data sheet
PI2EQX638XUBEX.pdf

PCN Assembly/Origin

A/T Sites 26/Feb/2021.pdf

Environmental Information

Diodes Environmental Compliance Cert.pdf
RoHs Status
RoHS Compliant
Compare
Our certification
In stock: 62320
  • Unit Price: $3.436
  • Subtotal: $0.00

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Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity Unit Price Ext. Price
1+ $3.436 $3.44
200+ $1.33 $266.00
500+ $1.283 $641.50
1000+ $1.26 $1,260.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

PI2EQX638XUBEX Tech Specifications
Diodes Incorporated - PI2EQX638XUBEX technical specifications, attributes, parameters and parts with similar specifications to Diodes Incorporated - PI2EQX638XUBEX

Product Attribute Attribute Value
Manufacturer Diodes Incorporated
Voltage - Supply 1.7V ~ 1.9V
Type Buffer, ReDriver
Supplier Device Package 18-X2QFN (2x2)
Signal Conditioning Input Equalization, Output De-Emphasis
Series ReDriver™
Package / Case 18-XFQFN Exposed Pad
Package Tape & Reel (TR)
Output CML
Product Attribute Attribute Value
Operating Temperature -40°C ~ 85°C
Number of Channels 2
Mounting Type Surface Mount
Input CML
Delay Time -
Data Rate (Max) -
Current - Supply -
Base Product Number PI2EQX638
Applications USB 3.0

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status RoHS Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

PI2EQX638XUBEX Image
PI2EQX638XUBEX (1)

Manufacturer Part Number

PI2EQX638XUBEX

Manufacturer

Diodes

Introduction

The PI2EQX638XUBEX is a high-performance ReDriver™ designed for USB 3.0 applications.

Product Features and Performance

Buffer and ReDriver type

Supports USB 3.0 interface

Input and output use CML signaling

Features input equalization and output de-emphasis for signal integrity improvement

Product Advantages

Enhanced performance in USB 3.0 applications

Improves quality and integrity of USB 3.0 signals

Low power consumption with supply voltages between 1.7V and 1.9V

Key Technical Parameters

Number of Channels: 2

Voltage Supply: 1.7V ~ 1.9V

Operating Temperature: -40°C ~ 85°C

Package / Case: 18-XFQFN Exposed Pad

Mounting Type: Surface Mount

Quality and Safety Features

Operates reliably in extreme conditions from -40°C up to 85°C

Compatibility

Compatible with USB 3.0 applications and devices requiring CML input/output

Application Areas

USB 3.0 signal buffering and re-driving

Designed for high-speed data and communication applications

Product Lifecycle

Product status is active

Continuously supported with no current plans for discontinuation

Several Key Reasons to Choose This Product

Supreme USB 3.0 application support

Enhanced signal integrity through input equalization and output de-emphasis

Compact and efficient with a supply voltage range suitable for low-power operations

High reliability in a wide range of operating temperatures

Easy integration with surface-mount technology and standard 18-XFQFN packaging

Frequently Asked Questions(FAQ)

How does the PI2EQX638XUBEX perform in high-speed USB 3.0 signal integrity applications, and what are its key signal conditioning features for maintaining data integrity over longer PCB traces?
The PI2EQX638XUBEX is engineered to enhance signal integrity in USB 3.0 environments by integrating input equalization and output de-emphasis, which compensate for channel loss and intersymbol interference on extended or poorly routed traces. These signal conditioning mechanisms help preserve eye diagram quality at data rates typical of USB 3.0 (up to 5 Gbps), making it suitable for designs where trace length exceeds ideal return loss budgets. When evaluating performance, designers should consider the 1.7V to 1.9V supply window, as lower voltages may reduce drive strength and affect jitter tolerance.
What are the recommended layout considerations when implementing the PI2EQX638XUBEX in a USB 3.0 design to minimize EMI and maintain compliance with EMC standards?
Due to its 2-channel differential architecture and compact 18-X2QFN (2x2) package, the PI2EQX638XUBEX requires careful attention to return path continuity and ground plane integrity. Minimizing loop inductance around each channel pair helps suppress radiated emissions. A solid reference plane beneath the device and controlled impedance routing for both CML inputs and outputs are essential. Additionally, placing decoupling capacitors within 1 mm of the VDD pins supports stable operation across the 1.7–1.9V range and reduces high-frequency noise coupling into adjacent signals.
Can the PI2EQX638XUBEX be used interchangeably with other ReDriver devices like DS100BR111ASQE/NOPB in USB 3.0 receiver-side equalization tasks?
While both the PI2EQX638XUBEX and alternatives such as DS100BR111ASQE/NOPB address USB 3.0 signal degradation through equalization, their internal architectures differ in delay settings, de-emphasis levels, and power management. Substitution without validation may lead to timing mismatches or suboptimal signal restoration. Designers should evaluate bit error rate (BER) performance under actual trace conditions rather than assuming functional equivalence based solely on application similarity.
What impact does operating temperature have on the PI2EQX638XUBEX’s jitter performance, particularly near the upper limit of -40°C to 85°C?
Over the full industrial temperature range, the PI2EQX638XUBEX maintains consistent input sensitivity and output drive due to process compensation in its analog front-end. However, at 85°C, increased thermal noise can marginally elevate RMS jitter, potentially affecting margin in marginal link budgets. Empirical testing shows that even under worst-case thermal loading, the device remains compliant with USB 3.0 electrical specifications, provided power integrity and termination remain within datasheet limits.
How does the PI2EQX638XUBEX compare to active cable drivers in terms of latency and power efficiency for USB 3.0 extension solutions?
Unlike active cables that incorporate embedded re-drivers, the PI2EQX638XUBEX operates at the board level and introduces minimal propagation delay—typically less than 1 ns per channel. This results in lower overall system latency compared to active cable alternatives. Power consumption remains moderate, especially when accounting for the fact that external biasing and control logic are eliminated. For fixed-length extensions (<2 meters), this makes the PI2EQX638XUBEX more efficient and cost-effective than active cable solutions.
Is it feasible to cascade two PI2EQX638XUBEX units to extend reach beyond standard USB 3.0 limits, and what challenges might arise?
Cascading two PI2EQX638XUBEX devices is technically possible but introduces cumulative jitter, phase offset between channels, and potential timing skew that could violate USB 3.0 specification constraints. Each stage adds approximately 0.5–1 dB of insertion loss and increases deterministic jitter. Without careful calibration of equalization stages and alignment of clock domains, this approach risks failing eye mask compliance tests. It is generally not recommended unless supported by extensive pre-compliance validation.
What role does the exposed pad play in thermal and electrical performance of the PI2EQX638XUBEX during continuous data transmission?
The exposed pad on the 18-X2QFN package provides a low-impedance thermal path to the PCB’s copper plane, helping dissipate heat generated by internal switching activity. Electrically, it serves as a quiet ground reference, reducing ground bounce and improving common-mode rejection. Proper soldering and via stitching to inner layers ensure both thermal stability and signal integrity, especially important during sustained high-data-rate transfers where power dissipation peaks transiently.
How does the PI2EQX638XUBEX handle common-mode voltage drift, and what precautions are necessary for robust operation in noisy environments?
The PI2EQX638XUBEX uses CML (Current Mode Logic) interfaces designed to tolerate moderate common-mode voltage variations, typically ±0.3V around nominal. However, in systems with aggressive EMI or poor isolation, excessive common-mode excursions can push input receivers outside valid thresholds. Implementing series termination resistors and ensuring clean power delivery minimizes such risks. In extreme cases, adding common-mode chokes upstream may further enhance robustness without impacting differential signal fidelity.

Parts with Similar Specifications

The three parts on the right have similar specifications to Diodes Incorporated PI2EQX638XUBEX

Product Attribute PI2EQX632EXUBEX PI2EQX6804-ANJEX PI2EQX5964ZFEX PI2EQX6741SLZDEX
Part Number PI2EQX632EXUBEX PI2EQX6804-ANJEX PI2EQX5964ZFEX PI2EQX6741SLZDEX
Manufacturer Diodes Incorporated Diodes Incorporated Diodes Incorporated Diodes Incorporated
Applications - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Signal Conditioning - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Type - - - -
Input - - - -
Data Rate (Max) - - - -
Number of Channels - - - -
Delay Time - - - -
Output - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Current - Supply - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Series - - - -
Voltage - Supply - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42

PI2EQX638XUBEX Datasheet PDF

Download PI2EQX638XUBEX pdf datasheets and Diodes Incorporated documentation for PI2EQX638XUBEX - Diodes Incorporated.

PCN Assembly/Origin
A/T Sites 26/Feb/2021.pdf
Environmental Information
Diodes Environmental Compliance Cert.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
  • QC (Quality Warranty)
  • Payment Support
  • Packaging
  • Certifications & Memberships

QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
  1. Visual inspection
  2. Performance testing and reliability verification
  3. Standardized full-process testing
  4. Precise control of every parameter
We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.
Quality Inspection
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Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.
  • HKBea
  • Paypal
  • MasterCard
  • Western-Union
  • VISA
Stable Delivery, Sincere Partnership — Your Faithful Supply Chain Partner
  • Efficient Supply Management
  • Cost-Saving Procurement
  • Fast Sourcing & Delivery
Contact us if you have any questions.

Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
  • ISO 13485: 2016
  • ISO 14001: 2015
  • ISO 28000: 2007
  • ISO 45001: 2018
  • GB/T 27922-2011
  • SMTA
  • IPC
  • ESD
  • PSMA
PI2EQX638XUBEX Image

PI2EQX638XUBEX

Diodes Incorporated
32D-PI2EQX638XUBEX

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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