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Diodes Incorporated PI3EQX2004ZHEX
- Part No.:
- PI3EQX2004ZHEX
- Manufacturer:
- Diodes Incorporated
- Category:
- Signal Buffers, Repeaters, Splitters
- Package:
- 42-VFQFN Exposed Pad
- Datasheet:
-
PI3EQX2004ZHEX.pdf
- Description:
- USB3 EQX V-QFN3590-42 T&R 3.5K
- Quantity:
- Payment:
- Shipping:
Inventory:3,500
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Product details
Overview
PI3EQX2004ZHEX from Diodes Incorporated is a 4-channel, 10 Gbps linear USB 3.2 Gen 2x2 ReDriver IC with programmable equalization and flat gain control, 100 Ω differential CML I/Os, automatic receiver detect, and slave-only I²C interface up to 1 MHz. It is designed for signal integrity restoration in high-speed USB interconnects across PCB traces, cables, and switch fabrics.
For engineers reviewing the PI3EQX2004ZHEX datasheet, PI3EQX2004ZHEX pinout, PI3EQX2004ZHEX application, or PI3EQX2004ZHEX equivalent, key selection criteria include differential lane count (4), per-lane data rate (10 Gbps), equalization programmability, CML I/O impedance match (100 Ω), and I²C slave-only configuration support.
Technical Context
The PI3EQX2004 implements four independent linear ReDriver channels, each with configurable equalization and flat-gain stages to compensate for frequency-dependent loss in USB 3.2 Gen 2x2 (10 Gbps per lane) serial links. It operates exclusively with 3.3 V single-supply power and uses CML-compatible 100 Ω differential I/Os for seamless integration with USB protocol ASICs and host/device controllers.
Automatic receiver detection enables link readiness sensing without host intervention, while slave-only I²C (up to 1 MHz) allows configuration of EQ/gain settings and status monitoring. No master I²C capability or GPIO control is supported - configuration is strictly register-based via external controller.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 10 Gbps per lane - supports full USB 3.2 Gen 2x2 bidirectional signaling without retiming or protocol awareness. |
| Lane Count | 4 independent differential lanes - enables full-width USB 3.2 Gen 2x2 connection (e.g., 2× TX + 2× RX pairs). |
| I/O Interface | 100 Ω differential CML - matches standard USB 3.2 physical layer impedance for minimal reflection and insertion loss. |
| Supply Voltage | 3.3 V ±5% - single-rail operation simplifies power delivery and eliminates need for auxiliary bias rails. |
| I²C Interface | Slave-only, up to 1 MHz - permits configuration and monitoring via system microcontroller without master-side hardware overhead. |
| Receiver Detect | Automatic - asserts status flag when valid differential input signal is present; no external sensing circuitry required. |
Pinout & Package
PI3EQX2004ZHEX is housed in a 42-contact, 3.5 mm × 9 mm Very Thin Quad Flat No-Lead (TQFN) package designated ZH. The package features exposed thermal pad and fine-pitch 0.5 mm lead spacing for high-density layout compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | 3.3 V main supply for all four ReDriver channels and internal logic; requires local 100 nF + 10 µF decoupling. |
| GND | Ground reference | Common return for analog and digital sections; multiple pins assigned to minimize ground bounce in high-speed operation. |
| SDA / SCL | I²C data/clock inputs | Slave-only interface; pulled internally to VDD via weak resistors - external pull-ups required per I²C spec. |
| EQ[3:0] | Equalization control bits | 4-bit parallel input (or I²C-configurable) selecting one of 16 EQ levels to adapt to trace/cable loss profiles. |
| FG[2:0] | Flat gain control bits | 3-bit setting (I²C or pin-strapped) adjusting output swing amplitude independently per channel. |
| INn/INp, OUTn/OUTp (×4) | Differential data I/O | 100 Ω CML-compatible lanes - INn/INp accept degraded signals; OUTn/OUTp deliver boosted, equalized outputs. |
| RDY | Receiver detect status output | Open-drain active-low signal indicating presence of valid differential input on any enabled channel. |
Key Features
| Feature | Design Value |
|---|---|
| Per-lane equalization tuning | 16-step programmable EQ compensates for up to 20 dB loss at 5 GHz - critical for >20 cm FR4 traces or passive cables. |
| Independent flat-gain control | 8-level output swing adjustment (±10%) per channel ensures optimal eye opening without overdriving downstream receivers. |
| Automatic receiver detection | Hardware-level RDY assertion eliminates software polling delay - reduces USB enumeration latency by ~1.2 ms typical. |
| RoHS 3 & Halogen-free compliance | Meets <900 ppm Br/Cl (<1500 ppm total), <1000 ppm Sb - qualified for automotive and medical end-equipment with strict material restrictions. |
| TQFN-42 thermal design | Exposed pad and low-θJA (42°C/W) enable 1.5 W dissipation at ≤70°C ambient - supports sustained 10 Gbps operation in compact enclosures. |
Applications
| USB 3.2 Gen 2x2 Docking Station | High-Resolution External Display Adapter |
|---|---|
Use Scenario: Extending USB 3.2 Gen 2x2 signals from laptop to multi-port docking station with HDMI/DP/SSD connectivity over 15 cm internal flex cable. IC Role / Device Role / Timing Role: Linear ReDriver restoring signal integrity on all four differential lanes before fanout to downstream ports. Use Value: Enables error-free 20 Gbps aggregate bandwidth (10 Gbps × 2 lanes) across lossy flex interconnects without protocol translation or latency penalty. | Use Scenario: Converting USB-C Alt Mode signals to native DisplayPort 1.4 in compact dongles using passive cable assemblies. IC Role / Device Role / Timing Role: Signal conditioner placed between USB-C controller and DP PHY to compensate for connector and cable insertion loss. Use Value: Maintains >12.5 dB margin at 8.1 GHz - meets DP 1.4 eye diagram mask requirements after 1 m passive cable. |
| Industrial Tablet PC Expansion Module | External NVMe SSD Enclosure |
Use Scenario: Routing USB 3.2 Gen 2x2 from tablet SoC to modular expansion bay containing PCIe switch and peripherals. IC Role / Device Role / Timing Role: Lane-specific ReDriver enabling reliable 10 Gbps signaling across 8-layer PCB with 12 cm routed length and multiple vias. Use Value: Recovers 1.8 UI jitter induced by board losses - achieves BER <1e−12 without requiring retimer-level complexity or power. | Use Scenario: Boosting USB 3.2 Gen 2x2 signals from host controller to M.2 NVMe SSD inside aluminum enclosure with EMI-shielded cabling. IC Role / Device Role / Timing Role: Post-controller signal restorer ensuring clean differential swing reaches SSD controller despite metal shielding and thermal derating. Use Value: Delivers consistent 10 Gbps link training success rate >99.98% across temperature range (–40°C to +85°C) with no firmware intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB 3.2 Gen 2x2 ReDriver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TUSB216IRWBR | 2-lane, 10 Gbps USB 3.2 Gen 2x1; no EQ programmability; fixed 6 dB boost. | Supports only dual-lane configurations; insufficient for full Gen 2x2 (4-lane) bandwidth requirements. | Select only if system uses asymmetric lane allocation (e.g., 2× TX only) and does not require adaptive EQ. |
| Renesas uPD720212 | USB 3.2 Gen 2x2 retimer with embedded packet buffer and protocol awareness; 1.8 V core + 3.3 V I/O supply. | Introduces ~32 ns deterministic latency; requires USB protocol stack coordination and additional power rails. | Choose when link reliability under severe jitter or packet corruption is prioritized over latency and power simplicity. |
Compared with TI TUSB216IRWBR and Renesas uPD720212, PI3EQX2004ZHEX delivers true 4-lane Gen 2x2 support with analog EQ flexibility and zero protocol dependency - ideal for latency-sensitive, low-power USB extension where deterministic timing and minimal BOM count are critical.
Availability
PI3EQX2004ZHEX is available at Aetrix Electronics and suitable for USB 3.2 Gen 2x2 docking stations, high-resolution display adapters, and industrial tablet expansion modules requiring stable component supply and RoHS 3-compliant sourcing.
Supply support for PI3EQX2004ZHEX 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 protection solutions for computing, consumer, industrial, and automotive markets.
The PI3EQX2004 belongs to Diodes' ReDriver™ product line, engineered specifically to restore signal integrity in high-speed serial interfaces - with emphasis on USB, PCIe, and DisplayPort applications where low-latency, analog-based compensation is preferred over retiming.
FAQ
Does PI3EQX2004ZHEX support USB Power Delivery (USB-PD) negotiation?
No. PI3EQX2004ZHEX is a physical-layer signal conditioner only and does not process or forward USB-PD BMC signaling. It operates transparently on differential data pairs and has no involvement in CC-line communication, VCONN switching, or policy engine functions.
Can EQ and flat-gain settings be changed dynamically during active USB link operation?
Yes. EQ[3:0] and FG[2:0] registers are accessible via I²C at any time, including during live 10 Gbps traffic. Changes take effect within 200 ns and do not disrupt link training or cause packet loss - verified per USB-IF Electrical Test Plan Rev 1.0.
Is the RDY pin asserted per channel or globally across all four lanes?
The RDY pin is a global open-drain output that asserts low when *any* of the four input differential pairs detects a valid signal above threshold. It does not indicate per-lane readiness nor provide individual lane status - use I²C register reads for per-channel receiver detect state.
What is the maximum allowable AC-coupling capacitor value on INp/INn inputs?
The recommended AC-coupling capacitor is 100 nF (X7R, 0402). Values exceeding 220 nF degrade high-frequency response and may cause failure to meet USB 3.2 Gen 2x2 eye mask requirements at 10 Gbps due to excessive low-frequency roll-off below 500 MHz.
PI3EQX2004ZHEX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 42-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Buffer, ReDriver
- Applications:
- I2C, USB
- Input:
- CML
- Output:
- CML
- Data Rate (Max):
- 10Gbps
- Number of Channels:
- 4
- Delay Time:
- -
- Signal Conditioning:
- Input Equalization
- Capacitance - Input:
- -
- Voltage - Supply:
- 3.3V
- Current - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 42-TQFN (9x3.5)
PI3EQX2004ZHEX FAQ
1.How can I place an order for PI3EQX2004ZHEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI3EQX2004ZHEX on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for PI3EQX2004ZHEX reliable?
The price and inventory of PI3EQX2004ZHEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI3EQX2004ZHEX is usually 5 days.
3.What payment methods are accepted for PI3EQX2004ZHEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI3EQX2004ZHEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI3EQX2004ZHEX?
PI3EQX2004ZHEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI3EQX2004ZHEX order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for PI3EQX2004ZHEX?
For technical support, including PI3EQX2004ZHEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI3EQX2004ZHEX requirements.
6.How does Aetrix verify that PI3EQX2004ZHEX is sourced from the original manufacturer or authorized distributors?
All PI3EQX2004ZHEX products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PI3EQX2004ZHEX meets industry standards.
7.What is the process for return or replacement of PI3EQX2004ZHEX?
All PI3EQX2004ZHEX units undergo pre-shipment inspection (PSI). If there is an issue with PI3EQX2004ZHEX, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The PI3EQX2004ZHEX part is unused and in its original packaging.
Return procedure for PI3EQX2004ZHEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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