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Diodes Incorporated PI3EQX7742AIZHEX
- Part No.:
- PI3EQX7742AIZHEX
- Manufacturer:
- Diodes Incorporated
- Category:
- Signal Buffers, Repeaters, Splitters
- Package:
- 42-VFQFN Exposed Pad
- Datasheet:
-
PI3EQX7742AIZHEX.pdf
- Description:
- IC REDRIVER USB 3.0 42TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:9,627
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Product details
Overview
PI3EQX7742AIZHEX from Diodes Incorporated (acquired Pericom Semiconductor) is a USB 3.0-compliant 5.0 Gbps 2-port, 4-channel ReDriver IC with adjustable receiver equalization, pin-configured output emphasis control, and per-channel input signal detection/squelch. It features 100Ω differential CML I/Os, single 3.3V supply, and auto slumber mode for adaptive power management - deployed in external storage device interconnects and USB 3.0 cable extensions.
For engineers reviewing the PI3EQX7742AIZHEX datasheet, PI3EQX7742AIZHEX pinout, PI3EQX7742AIZHEX application, or PI3EQX7742AIZHEX equivalent, key selection criteria include differential channel independence, programmable EQ/De-Emphasis settings, input threshold detection behavior, slumber-mode wake latency, and TQFN-42 thermal performance under sustained 5.0 Gbps operation.
Technical Context
The PI3EQX7742AIZHEX implements four independent CML-based signal paths, each with a limiting amplifier, programmable equalizer, and squelch circuitry. Each channel supports automatic receiver detect via RxDet pin and individual enable/disable via EN_x# inputs.
It uses digital configuration to set equalization gain and output emphasis levels, while maintaining DC-coupled 100Ω differential impedance across all I/Os. Signal integrity optimization occurs through real-time adjustment of high-frequency boost (EQ_x) and high-frequency attenuation (De-Emphasis) per channel.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 5.0 Gbps per differential pair - supports full USB 3.0 Gen1 signaling without retiming or protocol awareness. |
| Channel Count | 4 independent differential channels - enables dual-lane USB 3.0 host-to-device or switch-fabric extension. |
| I/O Interface | 100Ω differential CML - matches standard USB 3.0 PHY output impedance for minimal reflection and insertion loss. |
| Supply Voltage | 3.3V ±5% - compatible with standard USB 3.0 system rail; no auxiliary voltage required. |
| Power Consumption | ~680mW active - enables thermal design within 3.5×9mm TQFN footprint at full data rate. |
| Standby Power | Slumber mode reduces dynamic power when input signal falls below Vth− - extends system-level energy efficiency. |
Pinout & Package
Package: 42-contact TQFN (3.5 mm × 9 mm, 0.5 mm pitch, exposed thermal pad).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN_1#, EN_2#, EN_3#, EN_4# | Per-channel enable input | Active-low digital control to disable individual ReDriver lanes; places channel in low-power standby. |
| RxDet | Global receiver detect enable | Pull-high activates automatic inactivity detection; triggers full-device power-down after timeout. |
| EQ_1–EQ_4 | Equalization control inputs | Pin-strapped binary selection of equalization gain level per channel (e.g., 0–12 dB boost). |
| XI+/XI−, XO+/XO− (×4) | Differential data I/O | 100Ω CML-compatible input/output pairs - require AC coupling capacitors and proper PCB trace impedance control. |
| VDD, GND, EPAD | Power and thermal interface | Single 3.3V supply; exposed pad must be soldered for thermal dissipation and noise reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Per-channel input signal detection & squelch | Each lane independently monitors input amplitude; drives outputs to common-mode voltage if signal drops below Vth− - prevents false signaling on disconnected cables. |
| Pin-configurable output emphasis | Hardware-selectable De-Emphasis levels reduce high-frequency overshoot on long or lossy PCB traces/cables - no I²C programming required. |
| Auto slumber mode | Enters ultra-low-power state when all enabled channels detect no valid input - eliminates need for host-side power management coordination. |
| Independent channel enable/disable | EN_x# pins allow selective activation of lanes - supports partial-link operation and dynamic power scaling in multi-port hubs. |
Applications
| External Storage Interconnect | USB 3.0 Docking Station |
|---|---|
Use Scenario: High-speed connection between USB 3.0 host controller and external HDD/SSD enclosure over 1-meter passive cable. IC Role / Device Role / Timing Role: Signal ReDriver that compensates for channel loss and ISI without altering USB 3.0 packet timing or protocol layer. Use Value: Restores eye opening at receiver by applying channel-specific equalization - enables reliable 5.0 Gbps operation beyond native PHY reach. | Use Scenario: Signal extension from laptop USB 3.0 port to multiple downstream peripherals (display, storage, Ethernet) via compact dock PCB. IC Role / Device Role / Timing Role: Four-lane ReDriver placed between upstream port and internal switch fabric - preserves signal integrity across dense routing layers. Use Value: Maintains >12 dB channel loss margin using adjustable EQ and De-Emphasis - avoids costly redesigns for impedance discontinuities. |
| Industrial USB Hub Module | Embedded Vision System Interface |
Use Scenario: Ruggedized USB 3.0 hub used in factory automation for connecting machine vision cameras and PLC interfaces. IC Role / Device Role / Timing Role: Lane-level signal conditioner enabling hot-plug robustness and ESD-tolerant link training recovery. Use Value: Input squelch prevents spurious link negotiation during cable insertion/removal - improves system reliability in noisy environments. | Use Scenario: High-resolution camera module interfacing directly to SoC USB 3.0 PHY on edge AI inference board. IC Role / Device Role / Timing Role: Short-reach ReDriver placed adjacent to image sensor connector to offset FR4 trace loss and via stub effects. Use Value: Programmable EQ_x settings compensate for fixed PCB losses - eliminates need for custom stack-up or controlled-impedance routing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB 3.0 signal conditioning applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TUSB211IRWBR | Single-channel, 480 Mbps USB 2.0 ReDriver; no EQ/De-Emphasis; 1.8V/3.3V dual supply. | Limited to USB 2.0 speed; lacks per-lane control and slumber mode - unsuitable for Gen1 USB 3.0. | Select only for legacy USB 2.0 extension where power and bandwidth requirements are lower. |
| TS3USB30E | 2-channel USB 3.0 switch (not ReDriver); no equalization; 5.5V tolerant analog switch architecture. | Provides multiplexing, not signal regeneration - cannot compensate for channel loss or ISI. | Choose when port selection is needed instead of signal integrity restoration. |
Compared with TUSB211IRWBR and TS3USB30E, the PI3EQX7742AIZHEX uniquely delivers full 5.0 Gbps per-lane equalization, independent squelch, and adaptive slumber - making it the only option among the three capable of extending USB 3.0 links across lossy media while preserving compliance.
Availability
PI3EQX7742AIZHEX is available at Aetrix Electronics and suitable for external storage interconnects, USB 3.0 docking stations, and industrial hub modules requiring stable component supply and guaranteed long-term manufacturability.
Supply support for PI3EQX7742AIZHEX 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 acquired Pericom Semiconductor in 2017 and integrates its high-speed interface portfolio into signal integrity solutions for USB, PCIe, HDMI, and DisplayPort applications.
The PI3EQX7742AIZHEX belongs to Pericom's ReDriver™ family, engineered specifically to restore degraded high-speed serial signals in USB 3.0 systems without protocol awareness or clock data recovery.
FAQ
Does PI3EQX7742AIZHEX require external configuration via I²C or SPI?
No. The PI3EQX7742AIZHEX uses pin-strapped digital inputs (EQ_x, EN_x#) for equalization level and channel enable control. It has no serial interface - configuration is static at power-up and requires no firmware or host processor involvement.
Can PI3EQX7742AIZHEX be used in USB 3.1 or USB 3.2 Gen1 designs?
Yes. USB 3.1 Gen1 and USB 3.2 Gen1 are electrically identical to USB 3.0 (5.0 Gbps). The PI3EQX7742AIZHEX meets all USB-IF electrical compliance requirements for Gen1 signaling and is widely deployed in certified Gen1 host and device products.
What is the function of the RxDet pin, and how is it used in system design?
The RxDet pin enables global automatic receiver detection. When pulled high, the device monitors all enabled channels for input activity; after configurable timeout with no valid signal, it enters full power-down. This simplifies thermal and power management in always-on dock or hub applications.
Is the PI3EQX7742AIZHEX compliant with USB-IF specifications for repeaters or hubs?
No - it is a protocol-transparent ReDriver, not a USB-IF-certified repeater or hub. It does not perform link training, packet parsing, or enumeration. Compliance testing is performed at the system level (host/device), not at the ReDriver IC level, per USB-IF guidelines for signal conditioners.
PI3EQX7742AIZHEX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- ReDriver™
- Package/Case:
- 42-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Buffer, ReDriver
- Applications:
- USB 3.0
- Input:
- CML
- Output:
- CML
- Data Rate (Max):
- 5Gbps
- Number of Channels:
- 4
- Delay Time:
- 305ps
- Signal Conditioning:
- Input Equalization, Output De-Emphasis
- Capacitance - Input:
- -
- Voltage - Supply:
- 3V ~ 3.6V
- Current - Supply:
- 250mA
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 42-TQFN (9x3.5)
PI3EQX7742AIZHEX FAQ
1.How can I place an order for PI3EQX7742AIZHEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI3EQX7742AIZHEX 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 PI3EQX7742AIZHEX reliable?
The price and inventory of PI3EQX7742AIZHEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI3EQX7742AIZHEX is usually 5 days.
3.What payment methods are accepted for PI3EQX7742AIZHEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI3EQX7742AIZHEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI3EQX7742AIZHEX?
PI3EQX7742AIZHEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI3EQX7742AIZHEX 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 PI3EQX7742AIZHEX?
For technical support, including PI3EQX7742AIZHEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI3EQX7742AIZHEX requirements.
6.How does Aetrix verify that PI3EQX7742AIZHEX is sourced from the original manufacturer or authorized distributors?
All PI3EQX7742AIZHEX 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 PI3EQX7742AIZHEX meets industry standards.
7.What is the process for return or replacement of PI3EQX7742AIZHEX?
All PI3EQX7742AIZHEX units undergo pre-shipment inspection (PSI). If there is an issue with PI3EQX7742AIZHEX, 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 PI3EQX7742AIZHEX part is unused and in its original packaging.
Return procedure for PI3EQX7742AIZHEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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