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Diodes Incorporated PI3HDX231ZLEX
- Part No.:
- PI3HDX231ZLEX
- Manufacturer:
- Diodes Incorporated
- Category:
- Specialized
- Package:
- 72-WFQFN Exposed Pad
- Datasheet:
-
PI3HDX231ZLEX.pdf
- Description:
- IC INTERFACE SPECIALIZED 72TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,980
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Product details
Overview
PI3HDX231ZLEX from Diodes Incorporated is an HDMI 2.0 Linear ReDriver™ 3:1 switch IC supporting 6 Gbps per-channel data rate, 4096×2160 resolution at 12-bit YCbCr 4:2:2, and DC/AC-coupled TMDS signal conditioning for DP++ level-shifting applications. It operates at 3.3 V, delivers 2× improved additive jitter performance over CMOS redrivers, and integrates DDC switching, squelch detection, and programmable termination resistors.
For engineers reviewing the PI3HDX231ZLEX datasheet, PI3HDX231ZLEX pinout, PI3HDX231ZLEX application, or PI3HDX231ZLEX equivalent, this device serves as a signal integrity-optimized HDMI 2.0 switch in TV, monitor, and peripheral switch box designs-requiring precise TMDS equalization, flat gain control, voltage swing tuning, and I²C or pin-strapped port selection.
Technical Context
The PI3HDX231 implements a linear analog re-driver architecture-not digital retiming-with independent per-channel input equalization (EQ), flat gain (FG), and output voltage swing (SW) control. Its functional block includes a 3:1 TMDS multiplexer, sink-side DDC buffer/switch, HPD routing logic, and squelch-based auto-power-down triggered by TMDS clock detection or HPD_SINK assertion.
It supports dual configuration modes: pin-strapped (via PORT_SEL[1:0], EQ[3:0], FG[2:0], SW[1:0]) and I²C register programming (7-bit address with ADR[3:0] pins). Input termination (RT) and output driver termination (ROUT) are programmable across all three ports, enabling link margin optimization in HDMI 2.0 source-to-sink paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 6 Gbps per TMDS channel - enables HDMI 2.0 4K@60Hz with 12-bit color depth |
| Supply Voltage | 3.3 V ±5% - standard single-rail operation compatible with HDMI source/sink power domains |
| Additive Jitter | 2× lower than CMOS redrivers - improves eye opening and receiver margin in long or lossy traces |
| Input Equalization | Configurable up to 17.7 dB @ 3 GHz - compensates high-frequency loss in PCB traces and cables |
| Output Swing Range | 800–1100 mVp-p - adjustable via SW[1:0] to match downstream receiver input sensitivity |
| Standby Current | <50 µA - achieved when all ports disabled or HPD_SINK = 0, reducing system idle power |
| DDC Support | Selectable active buffer or passive switch with VOL/VILC adjustment - ensures robust EDID communication across HDMI topologies |
Pinout & Package
72-pin TQFN (ZL package), 10 mm × 10 mm × 0.8 mm, exposed thermal pad (EPAD), RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D[2:0]P/N1–3 | TMDS differential inputs (3 ports) | Accepts AC- or DC-coupled HDMI 2.0 signals; polarity-swappable via TMDS_ORDER pin |
| CLKP/N1–3 | TMDS clock differential inputs (3 ports) | Supports frequency-based squelch detection (~12 MHz threshold) for auto-power-down |
| D[2:0]P/N, CLKP/N | TMDS differential outputs | Linear re-driven outputs with programmable EQ, FG, and SW; non-blocking transparency |
| HPD1–3, HPD_SNK | Hot-plug detect I/O | Routes sink-side HPD status to selected source port; open-drain with internal 300 kΩ pull-up |
| SDA/SCL1–3, SDA_SNK, SCL_SNK | DDC bidirectional bus | Configurable as active buffer (low VOL/VILC) or passive switch; supports 5 V-tolerant sink-side interface |
| PORT_SEL[1:0], MS, DDC_SEL | Pin-strapping controls | Set port selection, mode (I²C vs. pin), and DDC topology without firmware overhead |
| EQ[3:0], FG[2:0], SW[1:0] | Analog configuration straps | Define per-port equalization (up to 17.7 dB), flat gain (−3.5 to +6.0 dB), and output swing (800–1100 mVp-p) |
Key Features
| Feature | Design Value |
|---|---|
| HDMI 2.0 compliance | Validated for 4096×2160@60Hz, 12-bit YCbCr 4:2:2, and TMDS jitter budgets per spec |
| Linear ReDriver architecture | Preserves signal phase and timing integrity without clock-data recovery (CDR) latency or jitter accumulation |
| Receiver-side DFE support | Enables decision feedback equalization in downstream receivers by improving pre-equalized signal fidelity |
| Programmable termination | Adjustable RX/TX 50 Ω resistors (±22% range) to match trace impedance and minimize reflections |
| Squelch-based auto-power-down | Disables outputs and powers down TMDS blocks when no valid clock or HPD signal is detected |
Applications
| TV HDMI Input Switching | Monitor Multi-Source Hub |
|---|---|
|
Use Scenario: A 4K UHD smart TV with three HDMI inputs (STB, game console, streaming stick) routes one active source to its internal display controller. IC Role / Device Role / Timing Role: HDMI 2.0 3:1 linear re-driver providing signal integrity restoration and port selection before the SoC's HDMI receiver. Use Value: Maintains 6 Gbps eye opening across 15 cm internal PCB traces while enabling seamless source switching without signal dropout. |
Use Scenario: A professional monitor with HDMI, DisplayPort++, and USB-C inputs uses a single HDMI 2.0 receiver path shared across multiple upstream sources. IC Role / Device Role / Timing Role: Signal-conditioning switch enabling DP++ source compatibility via AC-coupled TMDS input and HDMI 2.0 output compliance. Use Value: Eliminates need for separate DP-to-HDMI converters by supporting both AC- and DC-coupled differential signaling on input channels. |
| HDMI Peripheral Switch Box | AIO PC Video Input Multiplexer |
|
Use Scenario: External desktop switch box allowing users to toggle between three HDMI sources using front-panel buttons or remote control. IC Role / Device Role / Timing Role: Central 3:1 HDMI 2.0 re-driver with I²C-controlled port selection and integrated DDC switching for EDID passthrough. Use Value: Enables plug-and-play source switching with zero EDID negotiation delay and full 4K@60Hz bandwidth preservation. |
Use Scenario: All-in-one PC motherboard routes HDMI output from discrete GPU, integrated GPU, or Thunderbolt controller to a single rear-panel HDMI port. IC Role / Device Role / Timing Role: High-fidelity TMDS multiplexer with programmable equalization to compensate for varying trace lengths and layer stackups. Use Value: Guarantees HDMI 2.0 compliance regardless of active graphics source, eliminating manual BIOS or driver reconfiguration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar HDMI 2.0 re-driver switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TDP142 | 2-channel HDMI 2.0 re-driver only; no integrated 3:1 switch or DDC logic | Requires external MUX and DDC switch; higher BOM count and layout complexity | Choose when discrete re-driving + custom switching is preferred over integrated solution |
| Pericom PI3HDX1202 | 2:1 HDMI 2.0 switch; lacks squelch detection, HPD routing, and DDC_VOL/VILC adjustment | Not suitable for 3-source systems or sink-side DDC voltage-level adaptation | Use only for dual-input applications where full feature set of PI3HDX231 is unnecessary |
Compared with TI TDP142 and PI3HDX1202, the PI3HDX231 uniquely integrates 3:1 switching, sink-aware HPD/DDC management, and full analog parameter control-reducing component count and enabling robust 4K source aggregation without external logic.
Availability
PI3HDX231ZLEX is available at Aetrix Electronics and suitable for TV manufacturing, monitor design, and HDMI peripheral switch box development requiring stable component supply, long-term lifecycle assurance, and full RoHS/halogen-free compliance.
Supply support for PI3HDX231ZLEX 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 PI3HDX231 belongs to Diodes' Linear ReDriver™ product line, engineered specifically to restore HDMI 2.0 signal integrity in space-constrained consumer and commercial displays without introducing CDR-induced latency or jitter.
FAQ
Does PI3HDX231ZLEX support HDCP?
No, the PI3HDX231ZLEX is a physical-layer signal conditioner and does not process or forward HDCP encrypted content. It transparently passes TMDS data-including HDCP authentication packets-while restoring signal integrity. HDCP compliance must be implemented separately in the source and sink devices.
Can PI3HDX231ZLEX operate with AC-coupled inputs from DisplayPort++ sources?
Yes, it explicitly supports AC-coupled DP++ differential inputs per datasheet Section 5.1. The input stage accepts common-mode voltages from 0 V to 1.2 V and provides internal biasing, enabling direct connection to DP++ sources without external level-shifting circuitry.
What is the function of the TMDS_ORDER pin?
The TMDS_ORDER pin selects differential pair ordering on input: default (pull-high) assigns D2/D1/D0/CLK sequence, while grounded configures CLK/D0/D1/D2. This matches physical PCB routing flexibility and ensures correct channel mapping when trace lengths differ across pairs.
How does squelch detection interact with HPD_SINK in power management?
When HPD_SINK is low (no 5 V from source), the device forces all ports into shutdown regardless of squelch state. When HPD_SINK is high, squelch monitors TMDS clock presence (~12 MHz threshold); absence triggers output high-Z and power-down of TMDS blocks, reducing standby current to <50 µA.
PI3HDX231ZLEX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 72-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- HDMI Redriver, Level Shifter
- Interface:
- I2C
- Voltage - Supply:
- -
- Supplier Device Package:
- 72-TQFN (11x5)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
PI3HDX231ZLEX FAQ
1.How can I place an order for PI3HDX231ZLEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI3HDX231ZLEX 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 PI3HDX231ZLEX reliable?
The price and inventory of PI3HDX231ZLEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI3HDX231ZLEX is usually 5 days.
3.What payment methods are accepted for PI3HDX231ZLEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI3HDX231ZLEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI3HDX231ZLEX?
PI3HDX231ZLEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI3HDX231ZLEX 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 PI3HDX231ZLEX?
For technical support, including PI3HDX231ZLEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI3HDX231ZLEX requirements.
6.How does Aetrix verify that PI3HDX231ZLEX is sourced from the original manufacturer or authorized distributors?
All PI3HDX231ZLEX 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 PI3HDX231ZLEX meets industry standards.
7.What is the process for return or replacement of PI3HDX231ZLEX?
All PI3HDX231ZLEX units undergo pre-shipment inspection (PSI). If there is an issue with PI3HDX231ZLEX, 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 PI3HDX231ZLEX part is unused and in its original packaging.
Return procedure for PI3HDX231ZLEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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