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Diodes Incorporated PI3HDX12211AZHEX
- Part No.:
- PI3HDX12211AZHEX
- Manufacturer:
- Diodes Incorporated
- Category:
- Signal Buffers, Repeaters, Splitters
- Package:
- 42-VFQFN Exposed Pad
- Datasheet:
-
PI3HDX12211AZHEX.pdf
- Description:
- ACTIVE HDMI V-QFN3590-42 T&R 3.5
- Quantity:
- Payment:
- Shipping:
Inventory:2,762
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Product details
Overview
PI3HDX12211AZHEX from Diodes Incorporated is a 4-channel HDMI 2.1 linear redriver IC supporting 12 Gbps data rates, 11 dB equalization at 6 GHz, 3.3 V ±0.3 V supply, and industrial temperature range (−40°C to +85°C). It implements CML I/O with 100 Ω differential impedance, independent per-channel equalizer/output swing/flat gain control, and transparent link training handling for laptop docking stations and gaming consoles.
For engineers reviewing the PI3HDX12211AZHEX datasheet, PI3HDX12211AZHEX pinout, PI3HDX12211AZHEX application, or PI3HDX12211AZHEX equivalent, key selection criteria include HDMI 2.1 signal integrity restoration, per-channel I²C/pin-strapped configuration, low back-current leakage on HDMI outputs, and 220 mW/channel power dissipation at 1200 mVpp output swing.
Technical Context
The PI3HDX12211AZHEX integrates four independent linear redriver channels, each with configurable 3-bit equalization, 2-bit flat gain, and 2-bit output swing control. Its CML input buffer accepts 50 Ω or high-impedance termination, while the output amplifier drives 100 Ω differential loads with programmable swing up to 1200 mVpp.
It operates in I²C slave mode (with 3-bit address) or pin-strapped mode, latching strap values into internal registers. The device supports back-current leakage isolation (IOFF) on both I²C and HDMI output pins and remains transparent to HDMI link training, TMDS coding, and data rate negotiation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 12 Gbps per channel - enables full HDMI 2.1 Ultra High Speed (UHS) link operation including 4K120/8K60 video. |
| Equalization | Up to 11 dB @ 6 GHz - compensates inter-symbol interference in lossy PCB traces or cables up to ~30 cm FR4. |
| Supply Voltage | 3.3 V ±0.3 V - compatible with standard logic rail; no external LDO required for core operation. |
| Power Dissipation | 220 mW per channel at 1200 mVpp output - enables thermal management in dense multi-channel layouts without forced air. |
| Operating Temp | −40°C to +85°C - qualified for industrial-grade embedded systems including docking stations and set-top boxes. |
| I²C Address | 3-bit selectable - allows up to 8 devices on same bus, supporting scalable multi-redriver designs. |
Pinout & Package
PI3HDX12211AZHEX uses a 42-contact Thin Fine Pitch Quad Flat No-Lead (TQFN) package with 0.4 mm pitch, exposed thermal pad, and RoHS-compliant lead-free finish (ZH code).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | 3.3 V core supply for all four redriver channels and I²C interface; requires local 100 nF decoupling. |
| PRSNT# | Hot-plug detect enable | Active-low input indicating source/sink presence; used to gate redriver enable during HDMI hot-plug events. |
| I+, I− | Differential CML input pair | Accepts 100 Ω differential HDMI TMDS signals; supports 50 Ω or high-Z termination via conditional pull-up. |
| O+, O− | Differential CML output pair | Drives 100 Ω differential load with programmable swing (400–1200 mVpp); includes IOFF isolation when disabled. |
| SCL/SDA | I²C interface pins | Support slave-mode configuration or master-mode EEPROM programming; feature IOFF to prevent back-current leakage. |
Key Features
| Feature | Design Value |
|---|---|
| Per-channel equalization control | 3-bit programmable setting (0–11 dB) enables fine-tuned compensation for varying pre-channel loss across four independent HDMI lanes. |
| Independent output swing tuning | 2-bit control (400–1200 mVpp) allows optimization of signal amplitude to match downstream receiver sensitivity and trace loss. |
| Flat gain adjustment | 2-bit setting adjusts DC gain to maintain baseline signal level after equalization, preventing overdrive or clipping. |
| HDMI link transparency | No modification to TMDS coding, link training sequence, or data rate negotiation - preserves native HDMI 2.1 protocol compliance. |
| IOFF protection | Back-current leakage isolation on I²C and HDMI output pins prevents unintended power injection during hot-plug or power sequencing. |
Applications
| Laptop Docking Station | Gaming Console Interface |
|---|---|
Use Scenario: Extending HDMI 2.1 signals from USB-C dock to multiple 4K120 displays over >15 cm PCB traces. IC Role / Device Role / Timing Role: Linear redriver restoring signal integrity on all four TMDS lanes without altering link training or timing alignment. Use Value: Enables reliable 12 Gbps transmission across lossy internal routing while maintaining HDCP 2.3 and DSC compatibility. | Use Scenario: Boosting HDMI output from GPU SoC to external 8K60 display through long flex-cable assembly. IC Role / Device Role / Timing Role: Per-lane equalization and swing control compensating for cable-induced frequency-dependent attenuation. Use Value: Delivers clean eye diagrams at receiver with <0.5 UI jitter increase, meeting HDMI 2.1 electrical compliance margin. |
| DTV & Set-Top Box | Desktop PC Video Expansion |
Use Scenario: Reconditioning HDMI signals routed between main board and front-panel display module with 20 cm FPC. IC Role / Device Role / Timing Role: Low-equalizer mode activation for short pre-channel paths minimizes noise amplification while preserving SNR. Use Value: Reduces bit error rate below 1E-12 without requiring re-timing or clock recovery circuitry. | Use Scenario: Supporting dual 4K60 HDMI outputs from discrete GPU via single PCIe slot with space-constrained layout. IC Role / Device Role / Timing Role: Four-channel parallel redriving with independent I²C register mapping for per-port configuration. Use Value: Eliminates need for separate redriver ICs per port, reducing BOM count and PCB area by 60% vs. single-channel solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar HDMI 2.1 redriver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TDP158 | Retimer (not linear redriver); includes embedded clock data recovery and HDMI 2.1 compliance test modes. | Required for long-cable (>3 m) or active-cable applications where jitter cleanup is mandatory. | Choose TDP158 only if CDR functionality and HDMI compliance testing support are needed; not drop-in compatible due to different power-up sequence and register map. |
| Maxim MAX96752 | Designed for GMSL2 automotive serial links; supports 12.5 Gbps but lacks HDMI-specific features (e.g., PRSNT#, HDCP passthrough awareness). | Targeted at automotive camera links, not consumer HDMI infrastructure; no native HDMI protocol transparency. | Select MAX96752 only for GMSL2-based video transport; unsuitable for HDMI 2.1 system integration due to missing PRSNT# handling and non-HDMI I/O biasing. |
Compared with TI TDP158 and Maxim MAX96752, PI3HDX12211AZHEX provides true HDMI 2.1 protocol transparency, per-channel linear equalization without CDR latency, and native hot-plug detection-making it optimal for short-to-mid reach consumer electronics where deterministic low-latency signal extension is critical.
Availability
PI3HDX12211AZHEX is available at Aetrix Electronics and suitable for laptop docking stations, gaming console interfaces, and DTV set-top boxes requiring stable component supply and HDMI 2.1 signal integrity assurance.
Supply support for PI3HDX12211AZHEX 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, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.
The PI3HDX12211A belongs to Diodes' ReDriver™ family, engineered specifically for high-speed serial interface signal restoration in HDMI, DisplayPort, and USB applications where low-latency, protocol-transparent amplification is required.
FAQ
Does PI3HDX12211AZHEX require external clocking or reference signals?
No. The PI3HDX12211AZHEX is a linear redriver and does not require an external clock or reference signal. It operates transparently on incoming HDMI TMDS data, preserving native timing and eliminating clock-data recovery latency. All internal biasing and amplification are self-contained using the 3.3 V supply and on-die termination networks.
Can PI3HDX12211AZHEX be configured without I²C?
Yes. Configuration can be performed entirely via pin strapping: PRSNT#, EQ[2:0], FG[1:0], and OS[1:0] pins set initial equalization, flat gain, and output swing values at power-up. These strap values are latched into corresponding I²C registers, enabling hybrid configuration flexibility.
What is the function of the PRSNT# pin?
The PRSNT# pin is an active-low hot-plug detect input that enables or disables redriver channel operation based on HDMI source/sink presence. When asserted, it gates internal amplifiers to prevent signal injection during unplug events and supports automatic retraining synchronization with the HDMI link layer.
Is PI3HDX12211AZHEX compliant with HDMI 2.1 specification requirements?
Yes. The device supports all HDMI 2.1 data rates up to 12 Gbps per lane, maintains TMDS coding transparency, passes HDMI 2.1 electrical compliance tests (including eye diagram and jitter tolerance), and handles variable-rate signaling (VRR), dynamic HDR, and eARC passthrough without modification.
PI3HDX12211AZHEX 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:
- HDMI, I2C
- Input:
- CML
- Output:
- CML
- Data Rate (Max):
- 12Gbps
- Number of Channels:
- 4
- Delay Time:
- -
- Signal Conditioning:
- Input Equalization
- Capacitance - Input:
- -
- Voltage - Supply:
- 3V ~ 3.6V
- Current - Supply:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 42-TQFN (9x3.5)
PI3HDX12211AZHEX FAQ
1.How can I place an order for PI3HDX12211AZHEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI3HDX12211AZHEX 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 PI3HDX12211AZHEX reliable?
The price and inventory of PI3HDX12211AZHEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI3HDX12211AZHEX is usually 5 days.
3.What payment methods are accepted for PI3HDX12211AZHEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI3HDX12211AZHEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI3HDX12211AZHEX?
PI3HDX12211AZHEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI3HDX12211AZHEX 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 PI3HDX12211AZHEX?
For technical support, including PI3HDX12211AZHEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI3HDX12211AZHEX requirements.
6.How does Aetrix verify that PI3HDX12211AZHEX is sourced from the original manufacturer or authorized distributors?
All PI3HDX12211AZHEX 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 PI3HDX12211AZHEX meets industry standards.
7.What is the process for return or replacement of PI3HDX12211AZHEX?
All PI3HDX12211AZHEX units undergo pre-shipment inspection (PSI). If there is an issue with PI3HDX12211AZHEX, 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 PI3HDX12211AZHEX part is unused and in its original packaging.
Return procedure for PI3HDX12211AZHEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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