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Diodes Incorporated PI3HDX1204EZHEX
- Part No.:
- PI3HDX1204EZHEX
- Manufacturer:
- Diodes Incorporated
- Category:
- Specialized
- Package:
- 42-WFQFN Exposed Pad
- Datasheet:
-
PI3HDX1204EZHEX.pdf
- Description:
- IC INTERFACE SPECIALIZED 42TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,616
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Product details
Overview
PI3HDX1204EZHEX from Diodes Incorporated is an HDMI 2.0-compliant linear redriver IC with integrated DP++ level shifting, supporting 6 Gbps TMDS data rates, <0.25 UI peak-to-peak additive jitter, programmable 4-bit equalization (up to 8.9 dB), and independent per-channel swing/flat-gain control. It operates from a single 3.3 V supply and targets HDMI sink-side signal integrity enhancement in high-resolution display interconnects.
For engineers reviewing the PI3HDX1204EZHEX datasheet, PI3HDX1204EZHEX pinout, PI3HDX1204EZHEX application, or PI3HDX1204EZHEX equivalent, key selection criteria include TMDS channel count (4), EQ resolution (4-bit), I2C address flexibility (42-pin package supports 4-bit address selection), and DP++ level-shifting capability for HDMI-to-DisplayPort compatibility.
Technical Context
The PI3HDX1204EZHEX implements a linear amplification architecture-preserving source-side differential signaling integrity to enable full utilization of sink-side DFE receivers. Its analog signal path avoids decision-based regeneration, eliminating deterministic jitter accumulation while maintaining DC coupling compatibility.
It integrates dual-mode configuration: pin-strapped control (via EQ[3:0], FG[1:0], SW[1:0]) and I²C-programmable registers (7-bit slave address, up to 16 configurable channels). The 42-pin TQFN package provides dedicated AD[3:0] pins for flexible I²C addressing and SW[1:0] pins for output voltage swing selection (1100–1400 mVpp at 6 Gbps).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| HDMI Version | HDMI 2.0 compliant - supports 4K@60Hz with HDR and deep color over standard TMDS links. |
| Max Data Rate | 6 Gbps per TMDS channel - enables full bandwidth for UHD video transmission without protocol translation. |
| Additive Jitter | <0.25 UIpp - ensures robust eye opening at receiver input after PCB trace loss compensation. |
| Equalization Range | 3.6 dB to 8.9 dB (16-step via EQ[3:0]) - compensates up to ~20 dB channel loss at 3 GHz for long or lossy traces. |
| Output Swing | 1100–1400 mVpp @ 6 Gbps - adjustable via SW[1:0] to match sink input sensitivity and reduce EMI/power. |
| Flat Gain Control | −3.5 dB to +2.5 dB (4-step via FG[1:0]) - corrects frequency-dependent attenuation without distorting signal shape. |
| Supply Voltage | 3.3 V ±5% - single-rail operation simplifies power delivery and reduces BOM count vs. dual-supply redrivers. |
Pinout & Package
PI3HDX1204EZHEX is housed in a 42-pin Very Thin Quad Flat No-Lead (TQFN) package measuring 3.5 mm × 9.0 mm with exposed thermal pad. Pin pitch is 0.5 mm. Package is Pb-free, halogen-free, and RoHS 3 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0RX+ / A0RX− | TMDS Input Differential Pair (Ch A0) | Accepts HDMI 2.0 source signals with internal 50 Ω termination; supports polarity swap and channel remapping. |
| A0TX+ / A0TX− | TMDS Output Differential Pair (Ch A0) | Drives HDMI sink with programmable swing (1100–1400 mVpp) and flat gain (−3.5 to +2.5 dB). |
| SW1 / SW0 | Output Swing Control Inputs | Selects one of four output voltage levels; determines power consumption and EMI profile per channel. |
| EQ3–EQ0 | Equalization Strength Inputs | Set 16-level boost (3.6–8.9 dB) to compensate inter-symbol interference in high-loss PCB traces. |
| FG1 / FG0 | Flat Gain Control Inputs | Adjust DC gain across entire TMDS bandwidth to restore amplitude without phase distortion. |
| PRSNT# | Cable Presence Detect Input | Active-low signal enabling automatic low-power mode when no HDMI cable is connected. |
| ENI2C | I²C Mode Enable Input | High = register-based configuration; Low = pin-strapped mode; enables mixed-mode system integration. |
| SDA / SCL | I²C Serial Interface | Supports standard-mode (100 kbps) communication for dynamic real-time EQ/gain/swing reconfiguration. |
Key Features
| Feature | Design Value |
|---|---|
| Linear redriver architecture | Preserves source differential waveform integrity to maximize sink-side DFE effectiveness and minimize jitter multiplication. |
| DP++ level shifting | Enables HDMI source connection to DisplayPort++ sinks without external level translators or protocol converters. |
| Per-channel programmability | Independent EQ, flat gain, and swing settings per TMDS lane allow asymmetric trace loss compensation. |
| Flexible configuration interface | Pin-strapping (for static setup) and I²C (for dynamic tuning) coexist-supports both cost-sensitive and adaptive designs. |
| Low-power cable detection | PRSNT# input triggers automatic power-down when HDMI cable is unplugged, reducing standby current by >70%. |
Applications
| Ultra-HD TV HDMI Input Buffering | Gaming Monitor Signal Integrity Enhancement |
|---|---|
|
Use Scenario: HDMI 2.0 source (e.g., GPU or media SoC) connects to 4K/60Hz TV via long internal flex cable or multi-layer PCB routing. IC Role / Device Role / Timing Role: Sink-side linear redriver restoring TMDS signal amplitude and eye opening after >15 dB channel loss. Use Value: Enables reliable 4K@60Hz transmission with HDR metadata intact, avoiding pixel dropouts or color banding caused by inter-symbol interference. |
Use Scenario: High-refresh-rate gaming monitor receiving HDMI 2.0 signals from next-gen consoles or PCs with tight timing margins. IC Role / Device Role / Timing Role: Linear redriver placed adjacent to HDMI receptacle to counteract board-level insertion loss and crosstalk. Use Value: Maintains sub-0.25 UI jitter budget required for stable 120 Hz frame sync and low-latency rendering without link training failures. |
| AV Receiver HDMI Switching Matrix | Digital Signage Controller Hub |
|
Use Scenario: Multi-input AV receiver routing HDMI 2.0 sources to multiple displays with varying cable lengths and connector types. IC Role / Device Role / Timing Role: Redriver on each output path providing independent EQ/gain tuning per display port. Use Value: Eliminates need for manual EDID management or fixed-gain repeaters; supports plug-and-play compatibility with legacy and modern displays. |
Use Scenario: Commercial signage controller driving multiple 4K displays over daisy-chained HDMI or custom backplane interfaces. IC Role / Device Role / Timing Role: Signal conditioner ensuring consistent TMDS eye quality across all outputs despite variable trace lengths and impedance mismatches. Use Value: Prevents intermittent black screens or HDCP handshake failures in 24/7 operation environments where signal margin erosion is cumulative. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar HDMI 2.0 redriver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TDP142 | Retimer architecture (decision-based), not linear; higher power (120 mW vs. 85 mW); requires clock recovery. | Requires retraining on hot-plug; less compatible with sink-side DFE; better for ultra-long (>10 m) cables. | Choose TDP142 only if deterministic jitter tolerance is secondary to extreme reach; avoid when preserving source waveform is critical. |
| Parade PS176 | Integrated HDMI 2.0-to-DisplayPort 1.2 bridge; includes protocol translation; no DP++ level shifting. | Replaces HDMI PHY entirely; adds latency; incompatible with pure HDMI sink paths requiring native TMDS pass-through. | Choose PS176 only when DisplayPort output is required; not a drop-in replacement for redriver-only use cases. |
Compared with TI TDP142 and Parade PS176, PI3HDX1204EZHEX uniquely combines linear redriving, DP++ level shifting, and per-lane programmability in a single 3.3 V device-making it optimal for HDMI sink-side signal restoration where waveform fidelity and low latency are mandatory.
Availability
PI3HDX1204EZHEX is available at Aetrix Electronics and suitable for ultra-HD TV manufacturing, gaming monitor design, AV receiver development, and digital signage controller production requiring stable component supply and long-term lifecycle support.
Supply support for PI3HDX1204EZHEX 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 semiconductor company specializing in discrete, analog, and mixed-signal ICs for power management, signal integrity, and connectivity applications.
The PI3HDX1204EZHEX belongs to Diodes' high-speed interface product line, engineered specifically for HDMI 2.0 signal conditioning in consumer and professional display systems where low jitter, programmability, and DP++ compatibility are essential.
FAQ
What is the function of the PRSNT# pin?
The PRSNT# pin is an active-low cable presence detect input with internal 100 kΩ pull-up. When pulled low, it enables normal operation; when high, the device enters low-power mode with inputs biased to 200 kΩ and outputs set to high-impedance. This feature reduces quiescent current by over 70% during cable disconnection, extending system standby efficiency without external control logic.
Does PI3HDX1204EZHEX support HDMI 2.1 features like 8K or DSC?
No. PI3HDX1204EZHEX is specified only for HDMI 2.0 compliance, supporting up to 6 Gbps per TMDS lane (4K@60Hz). It does not support HDMI 2.1's 10.2 Gbps+ data rates, Dynamic HDR, Variable Refresh Rate (VRR), or Display Stream Compression (DSC). For HDMI 2.1 applications, Diodes offers the PI3HDX1204BZHEX variant with extended bandwidth and updated equalization profiles.
How does the linear redriver architecture differ from a retimer?
Unlike retimers-which sample, regenerate, and reclock signals-PI3HDX1204EZHEX uses analog linear amplification to boost and equalize TMDS signals without decision circuitry. This preserves the original source waveform, avoids added deterministic jitter, and allows sink-side DFE receivers to operate at full capability. Retimers introduce latency and may fail under marginal eye conditions where linear redrivers succeed.
Can EQ and swing settings be changed dynamically during operation?
Yes. When ENI2C is high, the device operates in I²C mode and all parameters-including EQ[3:0], FG[1:0], and SW[1:0] per channel-are fully reprogrammable in real time via the 7-bit I²C interface (100 kbps standard mode). Register writes take effect immediately without reset, enabling adaptive tuning based on link training results or thermal drift compensation.
PI3HDX1204EZHEX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 42-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- HDMI Redriver, Level Shifter
- Interface:
- -
- Voltage - Supply:
- 3.3V
- Supplier Device Package:
- 42-TQFN (9x3.5)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
PI3HDX1204EZHEX FAQ
1.How can I place an order for PI3HDX1204EZHEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI3HDX1204EZHEX 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 PI3HDX1204EZHEX reliable?
The price and inventory of PI3HDX1204EZHEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI3HDX1204EZHEX is usually 5 days.
3.What payment methods are accepted for PI3HDX1204EZHEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI3HDX1204EZHEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI3HDX1204EZHEX?
PI3HDX1204EZHEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI3HDX1204EZHEX 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 PI3HDX1204EZHEX?
For technical support, including PI3HDX1204EZHEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI3HDX1204EZHEX requirements.
6.How does Aetrix verify that PI3HDX1204EZHEX is sourced from the original manufacturer or authorized distributors?
All PI3HDX1204EZHEX 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 PI3HDX1204EZHEX meets industry standards.
7.What is the process for return or replacement of PI3HDX1204EZHEX?
All PI3HDX1204EZHEX units undergo pre-shipment inspection (PSI). If there is an issue with PI3HDX1204EZHEX, 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 PI3HDX1204EZHEX part is unused and in its original packaging.
Return procedure for PI3HDX1204EZHEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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