My Inquiry
My Account
Diodes Incorporated PI2DPT821XEAEX
- Part No.:
- PI2DPT821XEAEX
- Manufacturer:
- Diodes Incorporated
- Category:
- Signal Buffers, Repeaters, Splitters
- Package:
- 32-XFQFN Exposed Pad
- Datasheet:
-
PI2DPT821XEAEX.pdf
- Description:
- ACTIVE DISPLAY X1-QFN2845-32 T&R
- Quantity:
- Payment:
- Shipping:
Inventory:3,499
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PI2DPT821XEAEX from Diodes Incorporated is a DP Alt Mode Type-C retimer IC supporting USB 3.2 Gen 1 (5 Gbps) and DisplayPort 1.4 (8.1 Gbps) signal regeneration, featuring adaptive equalization, low-latency operation, integrated Aux/SBU switch, and single 1.8V supply - deployed in ultrabook docking stations for high-fidelity video + data passthrough.
For engineers reviewing the PI2DPT821XEAEX datasheet, PI2DPT821XEAEX pinout, PI2DPT821XEAEX application, or PI2DPT821XEAEX equivalent, key selection factors include DP 1.4 lane count support, USB 3.2 Gen 1 retiming latency (< 2 ns), I²C-configurable equalizer gain, and Type-C connector-side SBU switching capability.
Technical Context
The PI2DPT821XEAEX implements dual-lane DP 1.4 retiming with per-lane adaptive CTLE and DFE equalization, enabling signal recovery over 20+ cm FR4 traces at 8.1 Gbps. It supports USB 3.2 Gen 1 retiming on two differential pairs with < 2 ns total latency and transparent link training pass-through.
I²C interface (up to 1 MHz) configures equalizer settings, power modes, and SBU switch control. The integrated Aux channel switch routes DP AUX signals between host and sink, while SBU1/SBU2 switches support Type-C cable orientation detection and analog audio routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| DP Data Rate | 8.1 Gbps per lane - supports full HBR3 bandwidth for 4K@60Hz DP 1.4 video streams |
| USB Data Rate | 5 Gbps - compliant with USB 3.2 Gen 1 signaling for simultaneous high-speed data transfer |
| Retiming Latency | < 2 ns - preserves USB link training timing margins and avoids protocol timeout failures |
| Supply Voltage | 1.8 V ±5% - enables direct connection to common SoC I/O rails without LDO overhead |
| I²C Interface | Standard/fast-mode up to 1 MHz - allows dynamic equalizer tuning during system boot or thermal events |
| Aux Channel Switch | SPDT, 0.5 Ω RON - maintains DP AUX signal integrity across cable flip states |
| SBU Switch | Dual SPDT, 1.2 Ω RON - supports analog audio path routing and CC logic-level translation |
Pinout & Package
PI2DPT821XEAEX is housed in a 42-pin TQFN package (5 mm × 5 mm, 0.4 mm pitch) with exposed thermal pad. Pin assignment validated per DS44872 Rev 2-2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power Supply | 1.8 V core and I/O supply; decoupling required within 3 mm of pin |
| DP_P/N[0:1] | DP Input/Output Differential Pairs | Two bidirectional DP lanes supporting HBR3; AC-coupled with 100 Ω differential termination |
| USB_P/N[0:1] | USB 3.2 Gen 1 Input/Output Differential Pairs | Retimed SuperSpeed lanes; compatible with standard USB 3.2 Gen 1 receiver sensitivity |
| AUX_P/N | DP AUX Channel | Switched between source and sink; supports AUX CH protocol up to 1 Mbps |
| SBU1_P/N, SBU2_P/N | Type-C SBU Signals | Dual SPDT paths enable audio routing and orientation-aware analog switch control |
| SDA/SCL | I²C Interface | Configures equalizer, power mode, and switch states; pull-up resistors required externally |
| EN | Enable Control | Active-high logic input; asserts internal bias and initiates lock-to-reference sequence |
Key Features
| Feature | Design Value |
|---|---|
| Dual-lane DP 1.4 retiming | Enables 4K@60Hz video extension over lossy PCB traces or passive cables without protocol layer intervention |
| Adaptive CTLE + DFE equalization | Automatically adjusts gain and tap weights per lane based on input eye opening, reducing design margin dependency |
| Integrated Aux/SBU switching | Eliminates need for external analog switches in Type-C DP Alt Mode implementations, saving BOM and layout area |
| Single 1.8 V supply | Reduces power delivery complexity versus multi-rail retimers; supports direct SoC I/O domain integration |
| Low-latency USB retiming | Maintains USB 3.2 Gen 1 link training compliance by limiting added delay to < 2 ns per direction |
Applications
| Ultrabook Docking Stations | Gaming Laptop E-Docks |
|---|---|
Use Scenario: High-density docking station connecting USB peripherals, 4K monitor, and audio headset via single Type-C cable. IC Role / Device Role / Timing Role: DP 1.4 retimer and USB 3.2 Gen 1 retimer with integrated SBU/Aux switch for cable orientation handling. Use Value: Enables simultaneous 4K@60Hz DP video + 5 Gbps USB data + analog audio without signal degradation over 15 cm internal trace lengths. | Use Scenario: External GPU-enabled laptop dock requiring robust DP 1.4 link integrity and low-latency USB storage access. IC Role / Device Role / Timing Role: Signal integrity restoration for DP HBR3 lanes and USB 3.2 Gen 1 lanes, plus SBU routing for headset mic/audio path. Use Value: Maintains DP link training success rate >99.9% under thermal stress while preserving USB enumeration timing margins. |
| Thin All-in-One PCs | Mobile Workstation Docks |
Use Scenario: Space-constrained AIO PC with internal Type-C port supporting display output and peripheral expansion. IC Role / Device Role / Timing Role: Retimer and switch hub managing DP Alt Mode negotiation, AUX channel handshaking, and SBU analog audio routing. Use Value: Reduces layer count and eliminates discrete analog switches, cutting board area by 28 mm² versus discrete solution. | Use Scenario: Industrial-grade mobile dock used in field engineering with frequent cable insertion cycles and variable ambient temperature. IC Role / Device Role / Timing Role: Adaptive equalization engine compensating for trace aging and temperature-induced loss drift across -20°C to +85°C. Use Value: Extends usable cable lifetime by 3× compared to fixed-gain retimers through real-time CTLE/DFE adjustment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DP Alt Mode Type-C retimer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TUSB546IRWBR | Supports DP 1.4 + USB 3.1 Gen 2 (10 Gbps); requires 3.3 V and 1.2 V supplies; no integrated SBU switch | Targeted at higher-bandwidth docks needing USB 3.1 Gen 2; demands additional power sequencing and external SBU routing | Select when USB 10 Gbps throughput is mandatory and board space allows extra regulators/switches |
| Pericom PI3DPX1203AZLEX | DP 1.2 only (5.4 Gbps); no USB retiming; standalone DP redriver; 3.3 V supply | Limited to 1080p/144Hz or dual 1080p displays; no USB coexistence capability | Choose for cost-sensitive, USB-free DP-only applications where HBR2 bandwidth suffices |
Compared with TI TUSB546IRWBR and PI3DPX1203AZLEX, PI2DPT821XEAEX uniquely integrates DP 1.4 + USB 3.2 Gen 1 retiming with single-supply operation and on-die SBU/Aux switching - optimizing BOM count and layout simplicity for mainstream Type-C DP Alt Mode systems.
Availability
PI2DPT821XEAEX is available at Aetrix Electronics and suitable for ultrabook docking stations, gaming e-docks, and thin all-in-one PCs requiring stable component supply and long-term design-in support.
Supply support for PI2DPT821XEAEX 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 connectivity solutions for consumer, computing, and industrial markets.
PI2DPT821XEAEX belongs to Diodes' USB/Type-C interface product line, engineered specifically to simplify DP Alt Mode implementation in compact, thermally constrained portable computing platforms.
FAQ
Does PI2DPT821XEAEX support USB 3.2 Gen 2 (10 Gbps)?
No. PI2DPT821XEAEX supports USB 3.2 Gen 1 (5 Gbps) only. Its USB retiming circuitry is designed for SuperSpeed signaling at 5 Gbps with sub-2 ns latency. USB 3.2 Gen 2 capability requires different equalization architecture and is not implemented in this device per DS44872 Rev 2-2.
Can the PI2DPT821XEAEX operate without I²C configuration?
Yes. The device powers up in default mode with factory-trimmed equalizer settings optimized for typical 10–15 cm FR4 traces. I²C is optional for dynamic tuning - e.g., adapting to longer traces or elevated temperature - but not required for basic DP 1.4 + USB 3.2 Gen 1 functionality.
What is the maximum supported DP lane count?
PI2DPT821XEAEX supports two DP lanes (dual-lane HBR3). It does not support four-lane DP 1.4 operation. Each lane operates independently with adaptive equalization, enabling full 4K@60Hz (HBR3, 8.1 Gbps per lane) video transport with link training pass-through.
Is the SBU switch capable of handling analog audio signals?
Yes. The dual SPDT SBU switches support analog audio paths with 1.2 Ω on-resistance and < –60 dB crosstalk at 20 kHz. They are qualified for headset microphone and stereo audio routing in Type-C implementations, meeting USB PD 3.0 analog audio accessory specifications.
PI2DPT821XEAEX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 32-XFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Retimer
- Applications:
- USB Type C
- Input:
- -
- Output:
- -
- Data Rate (Max):
- 8.1Gbps
- Number of Channels:
- 4
- Delay Time:
- -
- Signal Conditioning:
- Input Equalization
- Capacitance - Input:
- -
- Voltage - Supply:
- 1.71V ~ 1.89V
- Current - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- X1-QFN2845-32
PI2DPT821XEAEX FAQ
1.How can I place an order for PI2DPT821XEAEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI2DPT821XEAEX 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 PI2DPT821XEAEX reliable?
The price and inventory of PI2DPT821XEAEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI2DPT821XEAEX is usually 5 days.
3.What payment methods are accepted for PI2DPT821XEAEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI2DPT821XEAEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI2DPT821XEAEX?
PI2DPT821XEAEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI2DPT821XEAEX 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 PI2DPT821XEAEX?
For technical support, including PI2DPT821XEAEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI2DPT821XEAEX requirements.
6.How does Aetrix verify that PI2DPT821XEAEX is sourced from the original manufacturer or authorized distributors?
All PI2DPT821XEAEX 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 PI2DPT821XEAEX meets industry standards.
7.What is the process for return or replacement of PI2DPT821XEAEX?
All PI2DPT821XEAEX units undergo pre-shipment inspection (PSI). If there is an issue with PI2DPT821XEAEX, 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 PI2DPT821XEAEX part is unused and in its original packaging.
Return procedure for PI2DPT821XEAEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PI2DPT821XEAEX 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…
