My Inquiry
My Account
Diodes Incorporated PI2EQX5984ZLEX
- Part No.:
- PI2EQX5984ZLEX
- Manufacturer:
- Diodes Incorporated
- Category:
- Signal Buffers, Repeaters, Splitters
- Package:
- 72-WFQFN Exposed Pad
- Datasheet:
-
PI2EQX5984ZLEX.pdf
- Description:
- IC REDRIVER 5GBPS 4-LANE 72TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,902
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PI2EQX5984ZLEX from Pericom Semiconductor is a PCIe 2.0-compliant 4-lane (8-channel) serial ReDriver IC with programmable receiver equalization, transmitter de-emphasis, and I²C-based configuration. It operates at up to 5.0 Gbps per lane, supports electrical idle detection with fine-threshold adjustment, and delivers signal integrity enhancement across backplanes and cable interconnects in blade server architectures.
For engineers reviewing the PI2EQX5984ZLEX datasheet, PI2EQX5984ZLEX pinout, PI2EQX5984ZLEX application, or PI2EQX5984ZLEX equivalent, key selection criteria include its 1.2 V supply tolerance, 72-pin TQFN package, I²C-configurable equalization/de-emphasis levels, and support for channel broadcast, loop-back, and mux/demux modes in high-density PCIe 2.0 systems.
Technical Context
The PI2EQX5984ZLEX implements four independent data lanes-each with dual differential I/O pairs (Rx+/−, Tx+/−)-enabling full 4-lane PCIe 2.0 reconditioning. Its equalizer adapts to pre-cursor ISI via input-level detection, while de-emphasis is applied post-amplification to compensate for high-frequency loss in transmission paths.
Control logic integrates I²C (3.3 V tolerant), dedicated mode pins (LB#, RES_x, PD#), and individual output enable/disable per channel. Electrical idle detection uses adjustable threshold voltage set via I²C register, and power-down mode reduces quiescent current without disrupting bus state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 5.0 Gbps per lane - meets PCIe 2.0 specification eye opening and jitter compliance requirements. |
| Lane Count | 4 lanes (8 differential channels) - supports x1/x2/x4 PCIe link widths with full lane independence. |
| Supply Voltage | 1.2 V ± 0.05 V - tight regulation enables low-noise analog front-end operation and stable equalization gain. |
| Operating Temp | −40°C to +85°C - qualified for industrial-grade blade server and telecom infrastructure environments. |
| I²C Interface | 3.3 V tolerant - allows direct connection to host system management controllers without level-shifting. |
| Termination | Variable input/output 100 Ω differential CML termination - configurable per channel to match trace/cable impedance variations. |
Pinout & Package
Package: 72-contact, 10 mm × 10 mm × 0.8 mm TQFN, Pb-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1–A8, B1–B8, C1–C8, D1–D8 (x8 groups) | Differential Rx+/− and Tx+/− I/O | Eight 100 Ω CML differential pairs - each pair assigned to one PCIe lane segment for bidirectional re-driving. |
| SCL, SDA | I²C clock/data lines | Enable real-time configuration of equalization, de-emphasis, output level, and electrical idle threshold. |
| PD#, LB#, RES_x | Power-down, loop-back, reset control | Hardware-asserted functional modes - no software dependency for critical debug or initialization sequences. |
| SELy_x, Sy_x, Dy_x, DE_x | Configuration select inputs | Hardwired 8-bit control for fixed-mode setup when I²C is unavailable or during boot. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable equalization | Adjusts receiver gain and high-frequency boost to recover degraded pre-driver signals over lossy PCB traces or cables. |
| Configurable de-emphasis | Applies controlled high-frequency attenuation to transmitter output to counteract channel-induced intersymbol interference. |
| 1:2 channel broadcast mode | Routes single input stream to two independent outputs - supports redundant path routing or fan-out in switch fabric topologies. |
| Individual output control | Enables per-lane disable/enable - isolates faulty lanes without resetting entire PCIe link or affecting adjacent lanes. |
| Electrical idle detection | Monitors differential voltage swing below user-defined threshold - triggers low-power state only when link is truly inactive. |
Applications
| Blade Server Backplane Interconnect | PCIe 2.0 Cable Extension |
|---|---|
Use Scenario: Extending PCIe 2.0 signals between compute blades and midplane in modular chassis with >15 cm FR4 trace lengths. IC Role / Device Role / Timing Role: Signal integrity re-driver placed between ASIC and backplane connector to restore eye height and reduce jitter accumulation. Use Value: Enables reliable x4 link operation at 5.0 Gbps despite 12 dB insertion loss at 2.5 GHz on legacy backplane layouts. | Use Scenario: Driving active copper cables up to 3 m in external GPU enclosures or docking stations. IC Role / Device Role / Timing Role: Redriver located at cable source end to pre-compensate for frequency-dependent attenuation before transmission. Use Value: Maintains PCIe 2.0 compliance margin (≥3.5 dB SNR) at far-end receiver after 3 m passive cable + connector losses. |
| Embedded Switch Fabric Interface | Hot-Pluggable Module Link Conditioning |
Use Scenario: Interfacing FPGA-based PCIe root complex to multi-port packet switch in telecom line cards. IC Role / Device Role / Timing Role: Lane-specific re-driver enabling independent equalization per upstream/downstream port pair. Use Value: Allows mixed-media routing (e.g., short on-board traces + long flex cables) without compromising link training success rate. | Use Scenario: Integrating into M.2 or U.2 SSD carrier modules requiring hot-plug robustness and signal margin headroom. IC Role / Device Role / Timing Role: Re-driver placed at module edge to condition signals entering removable connector under thermal and mechanical stress. Use Value: Prevents link flapping during repeated insertions by maintaining consistent eye opening across temperature and contact resistance variation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PCIe 2.0 re-driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TUSB1002A | USB 3.1 Gen 1 + PCIe 2.0 dual-mode; lower max data rate (5 Gbps shared, not per lane); integrated USB switch logic. | Targeted at mixed-protocol docking solutions, not pure PCIe backplane extension. | Select when co-routing USB and PCIe on same board is required; avoid for dedicated PCIe-only systems due to shared bandwidth allocation. |
| IDT PI3EQX5984 | Same pinout and register map; identical equalization/de-emphasis architecture; manufactured post-Renesas acquisition of IDT. | No functional difference - drop-in replacement with identical qualification and thermal profile. | Preferred for new designs where long-term supply continuity is prioritized; shares same production lot traceability and test flow as PI2EQX5984ZLEX. |
Compared with TI TUSB1002A, PI2EQX5984ZLEX delivers dedicated per-lane 5.0 Gbps performance and superior PCIe-specific equalization tuning; versus IDT PI3EQX5984, it offers identical functionality but reflects Pericom's original design lineage and legacy qualification documentation.
Availability
PI2EQX5984ZLEX is available at Aetrix Electronics and suitable for blade server backplanes, PCIe cable extension systems, and embedded switch fabric interfaces requiring stable component supply and industrial-temperature operation.
Supply support for PI2EQX5984ZLEX 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
Pericom Semiconductor was a fabless provider specializing in high-speed interface ICs, acquired by Diodes Incorporated in 2016; its signal integrity portfolio remains widely deployed in enterprise computing platforms.
The PI2EQX5984 belongs to Pericom's PCIe ReDriver™ family, engineered specifically to restore signal integrity in multi-drop, long-trace, and cable-based PCIe 2.0 interconnects without protocol awareness or latency penalty.
FAQ
What is the function of the RES_x pin on PI2EQX5984ZLEX?
The RES_x pin is a per-lane hardware reset input that asynchronously clears internal latch states and forces the associated channel into default configuration. It operates independently of I²C or global PD# assertion, enabling targeted lane recovery during link training failures without affecting other active lanes.
Does PI2EQX5984ZLEX require external termination resistors?
No. The device integrates fully configurable 100 Ω differential CML termination on all eight I/O channels. External resistors are unnecessary unless custom impedance values outside the internal range (e.g., 85 Ω or 110 Ω) are required for specific channel calibration.
Can PI2EQX5984ZLEX operate in PCIe 1.1 mode?
Yes. It supports backward compatibility down to 2.5 Gbps per lane and retains full equalization and de-emphasis control. The device automatically detects data rate via clock recovery circuitry and adjusts equalization gain accordingly without firmware intervention.
How does electrical idle detection interact with power-down mode?
Electrical idle detection remains active in standby mode (PD# asserted), allowing the device to autonomously exit power-down when valid differential signaling resumes. Threshold voltage is retained from last I²C write, ensuring consistent wake-up sensitivity across power cycles.
PI2EQX5984ZLEX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 72-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Buffer, ReDriver
- Applications:
- I2C
- Input:
- -
- Output:
- -
- Data Rate (Max):
- 5Gbps
- Number of Channels:
- 8
- Delay Time:
- -
- Signal Conditioning:
- Input Equalization, Output De-Emphasis
- Capacitance - Input:
- -
- Voltage - Supply:
- 1.2V
- Current - Supply:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 72-TQFN (11x5)
PI2EQX5984ZLEX FAQ
1.How can I place an order for PI2EQX5984ZLEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI2EQX5984ZLEX 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 PI2EQX5984ZLEX reliable?
The price and inventory of PI2EQX5984ZLEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI2EQX5984ZLEX is usually 5 days.
3.What payment methods are accepted for PI2EQX5984ZLEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI2EQX5984ZLEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI2EQX5984ZLEX?
PI2EQX5984ZLEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI2EQX5984ZLEX 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 PI2EQX5984ZLEX?
For technical support, including PI2EQX5984ZLEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI2EQX5984ZLEX requirements.
6.How does Aetrix verify that PI2EQX5984ZLEX is sourced from the original manufacturer or authorized distributors?
All PI2EQX5984ZLEX 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 PI2EQX5984ZLEX meets industry standards.
7.What is the process for return or replacement of PI2EQX5984ZLEX?
All PI2EQX5984ZLEX units undergo pre-shipment inspection (PSI). If there is an issue with PI2EQX5984ZLEX, 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 PI2EQX5984ZLEX part is unused and in its original packaging.
Return procedure for PI2EQX5984ZLEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PI2EQX5984ZLEX Tags
-
PCA9509GM,125
NXP USA Inc.
-
PCA9617ADPJ
NXP USA Inc.
-
TCA9509DGKR
Texas Instruments
-
PCA9617ATPZ
NXP USA Inc.
-
PCA9517ADP,118
NXP USA Inc.
-
PCA9515ADP,118
NXP USA Inc.
-
PCA9515AD,118
NXP USA Inc.
-
PCA9517DP,118
NXP USA Inc.
-
TUSB211ARWBR
Texas Instruments
-
PCA9517AD,118
NXP USA Inc.
-
PCA9517ATP,147
NXP USA Inc.
-
P82B96PWR
Texas Instruments
Tech Hub
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
