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Diodes Incorporated PI3HDX1212ZLDEX
- Part No.:
- PI3HDX1212ZLDEX
- Manufacturer:
- Diodes Incorporated
- Category:
- Signal Buffers, Repeaters, Splitters
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
PI3HDX1212ZLDEX.pdf
- Description:
- ACTIVE HDMI W-QFN3060-40 T&R 3.5
- Quantity:
- Payment:
- Shipping:
Inventory:3,500
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Product details
Overview
PI3HDX1212ZLDEX from Diodes Incorporated is a 12Gbps HDMI 2.1 1:2 active signal duplicator IC designed for high-bandwidth video fanout in source-side applications. It supports 8K@60Hz and 4K@120Hz resolutions, features quad-level CTLE equalization (up to 15.0dB at 6GHz), programmable flat gain (–3.5dB to +1.0dB), and dual-mode control (pin-strapped or I²C). It operates from a single 3.3V supply across –40°C to +70°C and drives two independent HDMI 2.1 display paths with CML I/O.
For engineers reviewing the PI3HDX1212ZLDEX datasheet, PI3HDX1212ZLDEX pinout, PI3HDX1212ZLDEX application, or PI3HDX1212ZLDEX equivalent, this device is selected for HDMI 2.1 source-side signal duplication where channel loss compensation, output swing linearity, ESD-hardened CML interface, and dual-display timing synchronization are critical design requirements.
Technical Context
The PI3HDX1212ZLDEX implements four independent CTLE equalizers - one per input lane - with eight selectable boost levels (0.6dB to 15.0dB at 6GHz) controlled via EQ1/EQ2/RSVD pins or I²C register writes. Each of its eight differential CML outputs (A0–A3, B0–B3) supports configurable swing (800–1200mVppd) and flat gain (–3.5dB to +1.0dB) via SF/SW/FG pins or I²C.
It integrates dual-channel demux capability (configurable via I²C byte 2), power-down mode (PD pin), and I²C slave addressing (7-bit, AD10/AD32/AD54 programmable). Input return loss exceeds –12dB (differential, 1–6GHz), output return loss exceeds –12dB, and channel isolation is –35dB (100MHz–6GHz), ensuring signal integrity in multi-display HDMI 2.1 systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 12Gbps per lane - enables HDMI 2.1 FRL Mode 3 for 8K60/4K120 pixel transmission |
| Equalization Range | 0.6–15.0dB at 6GHz - compensates up to ~30dB channel loss at 6GHz for long PCB traces or cables |
| Output Swing | 800–1200mVppd - matches HDMI 2.1 TMDS voltage compliance and receiver sensitivity |
| Flat Gain | –3.5dB to +1.0dB - adjusts DC gain to maintain signal amplitude across frequency without peaking |
| ESD Protection | 2kV HBM on all I/O - protects against handling and system-level electrostatic discharge events |
| Supply Voltage | 3.3V ±10% - compatible with standard HDMI 2.1 source-side power domains |
| Latency | 0.5ns - preserves HDMI timing budgets and avoids skew-induced video artifacts |
| Channel Isolation | –35dB (100MHz–6GHz) - prevents crosstalk between duplicated A/B output paths |
Pinout & Package
Package: 40-pin TQFN (ZLD), 3 mm × 6 mm, 0.4 mm pitch, exposed thermal pad (EP).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RX0+ / RX0– RX1+ / RX1– RX2+ / RX2– RX3+ / RX3– | HDMI 2.1 TMDS Input Lanes (Ch 0–3) | Differential CML inputs with internal 50Ω termination to VCC or Hi-Z - accept clean source signals before equalization |
| A0TX+ / A0TX– A1TX+ / A1TX– A2TX+ / A2TX– A3TX+ / A3TX– B0TX+ / B0TX– B1TX+ / B1TX– B2TX+ / B2TX– B3TX+ / B3TX– | HDMI 2.1 TMDS Output Lanes (Port A & B) | Dual 4-lane CML outputs - drive two independent displays with independently configurable EQ, swing, and gain |
| EQ1 / EQ2 / RSVD SF / RSVD AD10 / AD32 / AD54 | 4-Level Control Inputs | Resistor-divider-configured pins (100kΩ pull-up / 200kΩ pull-down) setting EQ level, swing/flat gain, and I²C address - enable hardware configuration without firmware |
| MS | Mode Select | Logic-high = pin-strapped mode; logic-low = I²C register access - determines control interface priority |
| SCL / SDA | I²C Interface | Standard-mode (100kHz) 7-bit slave interface - allows dynamic reconfiguration of EQ, swing, gain, and channel power-down during operation |
| PD | Power-Down Enable | Active-high input - places all I/Os in Hi-Z and disables internal biasing to reduce standby current to 110µA |
| VCC (Pins 3,9,12,23,32) | Power Supply | Five dedicated 3.3V supply pins - ensure low-noise, low-impedance delivery to analog and digital blocks |
| GND (Pins 18,37,EP) | Ground Reference | Three ground connections plus exposed thermal pad - minimize ground bounce and improve thermal dissipation (θJA = 17.9°C/W) |
Key Features
| Feature | Design Value |
|---|---|
| Quad-lane CTLE equalization | Eight discrete EQ settings (0.6–15.0dB @6GHz) per input lane - corrects inter-symbol interference in long HDMI 2.1 channels |
| Dual-port CML output architecture | Independent A/B port control - enables asymmetric configuration (e.g., EQ optimized for Port A cable length, different swing for Port B display load) |
| Pin-strapped + I²C dual-mode control | No external MCU required for basic setup; full runtime reconfiguration supported - reduces BOM and firmware complexity |
| Per-channel power-down via I²C | Individual lane disable (BYTE 2 bits 7–4) - cuts dynamic power by >30% when one display path is inactive |
| –35dB channel-to-channel isolation | Prevents signal coupling between Port A and Port B outputs - essential for maintaining HDCP and SCDC link integrity across dual displays |
| 12Gbps validated performance | Guaranteed AC specs (S11/S22 >–12dB, Vnoise <1.0mVRMS) at 12Gbps - ensures compliance with HDMI 2.1 electrical specifications |
Applications
| Display Peripheral Box | Digital Signage Display |
|---|---|
Use Scenario: HDMI 2.1 source (GPU or media SoC) feeds a compact peripheral box that splits signal to dual monitors or projectors. IC Role / Device Role / Timing Role: Active signal duplicator placed at driver side - regenerates and equalizes TMDS lanes before fanout to two independent HDMI receivers. Use Value: Enables simultaneous 8K60 output to two displays without signal degradation over 15cm+ PCB traces or passive cables. | Use Scenario: Commercial digital signage controller drives synchronized content across multiple large-format displays in retail or transportation hubs. IC Role / Device Role / Timing Role: HDMI 2.1 repeater/duplicator - maintains HDCP 2.3 and SCDC handshaking integrity while distributing identical video streams. Use Value: Eliminates need for dual HDMI source ports or external splitters; supports independent EDID/SCDC feedback per display path. |
| Multi-Screen Splicing | PC Graphics Workstation |
Use Scenario: Video wall controller uses splicing engine to render ultra-wide content across 2×2 or 3×3 display grids, requiring precise timing alignment. IC Role / Device Role / Timing Role: Low-latency (0.5ns) signal duplicator - preserves pixel-clock phase coherence between adjacent display tiles. Use Value: Prevents visible seam artifacts by minimizing skew between duplicated TMDS lanes driving adjacent panels. | Use Scenario: High-end workstation GPU outputs 4K120 to dual professional monitors (e.g., medical imaging, CAD, color grading). IC Role / Device Role / Timing Role: Source-side HDMI 2.1 buffer and equalizer - compensates for GPU package parasitics and motherboard trace loss before display connection. Use Value: Ensures stable link training and error-free transmission at maximum data rate, even with non-ideal board layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar HDMI 2.1 signal duplication applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TDP158 | Single 4-lane repeater (1:1); no native 1:2 fanout - requires external multiplexer or dual-device implementation | Limited to point-to-point retiming; lacks integrated dual-output architecture and per-port EQ control | Select when only retiming (not duplication) is needed, or when using TI ecosystem with companion mux ICs |
| Maxim MAX96752 | GMSL2 serializer with HDMI bridge - supports 1:2 fanout but targets automotive GMSL2 links, not direct HDMI 2.1 output | Requires GMSL2 deserializers at display end; adds latency and protocol translation overhead | Select for automotive infotainment with camera/display consolidation over coax; not suitable for direct HDMI display connection |
Compared with TI TDP158 and Maxim MAX96752, the PI3HDX1212ZLDEX uniquely integrates native 1:2 HDMI 2.1 fanout with per-port equalization, eliminating external components and protocol translation - reducing bill-of-materials cost and design complexity for consumer/professional multi-display systems.
Availability
PI3HDX1212ZLDEX is available at Aetrix Electronics and suitable for HDMI 2.1 display peripheral boxes, digital signage controllers, and multi-screen splicing systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant green packaging.
Supply support for PI3HDX1212ZLDEX 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 high-performance signal integrity, power management, and connectivity applications.
The PI3HDX1212ZLDEX belongs to Diodes' Pericom® high-speed interface product line, engineered specifically for HDMI 2.1, DisplayPort, and USB-C alternate mode signal conditioning and distribution in premium consumer, commercial, and industrial video systems.
FAQ
What is the minimum input signal amplitude supported by PI3HDX1212ZLDEX?
The device accepts differential input peak-to-peak voltage (VRX-DIFF-PP) down to 1.2Vppd under operational conditions. Its CTLE equalizer is optimized for HDMI 2.1-compliant sources, and input common-mode noise tolerance is specified up to 150mVpp (DC–200MHz), ensuring robust reception from GPUs and SoCs with varying output drive strength.
Can PI3HDX1212ZLDEX operate in demultiplexer mode?
Yes - I²C register BYTE 2 bit 1 enables demux mode, allowing the device to route a single 4-lane HDMI stream to either Port A or Port B (selected by BYTE 2 bit 0), rather than duplicating to both. This provides flexible signal routing without external switches, though it disables simultaneous dual-output operation.
How does the PI3HDX1212ZLDEX handle HDCP and EDID traffic?
The IC passes DDC (I²C-based EDID/SCDC) and HPD signals transparently through dedicated pins (DDC1/HPD1 and DDC2/HPD2) - it does not terminate or process HDCP keys or EDID data. System-level HDCP authentication and EDID negotiation occur between source and displays; the PI3HDX1212ZLDEX preserves timing and signal integrity of these auxiliary channels.
Is thermal management required for continuous 12Gbps operation?
Yes - at full 12Gbps operation, typical active power dissipation is 1660mW. The 40-pin TQFN (ZLD) package has θJA = 17.9°C/W; with a 25°C ambient and 10°C rise limit, ≥4.5 cm² of 2-oz copper on the thermal pad is recommended. The exposed pad (EP) must be soldered to a solid ground plane for effective heat transfer.
PI3HDX1212ZLDEX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 40-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Buffer, Multiplexer
- Applications:
- HDMI
- Input:
- CML
- Output:
- CML
- Data Rate (Max):
- 12Gbps
- Number of Channels:
- 2 x 1:2, 2:1
- Delay Time:
- -
- Signal Conditioning:
- Input Equalization
- Capacitance - Input:
- -
- Voltage - Supply:
- 3.3V
- Current - Supply:
- 461mA (Max)
- Operating Temperature:
- -40°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-TQFN (3x6)
PI3HDX1212ZLDEX FAQ
1.How can I place an order for PI3HDX1212ZLDEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI3HDX1212ZLDEX 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 PI3HDX1212ZLDEX reliable?
The price and inventory of PI3HDX1212ZLDEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI3HDX1212ZLDEX is usually 5 days.
3.What payment methods are accepted for PI3HDX1212ZLDEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI3HDX1212ZLDEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI3HDX1212ZLDEX?
PI3HDX1212ZLDEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI3HDX1212ZLDEX 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 PI3HDX1212ZLDEX?
For technical support, including PI3HDX1212ZLDEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI3HDX1212ZLDEX requirements.
6.How does Aetrix verify that PI3HDX1212ZLDEX is sourced from the original manufacturer or authorized distributors?
All PI3HDX1212ZLDEX 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 PI3HDX1212ZLDEX meets industry standards.
7.What is the process for return or replacement of PI3HDX1212ZLDEX?
All PI3HDX1212ZLDEX units undergo pre-shipment inspection (PSI). If there is an issue with PI3HDX1212ZLDEX, 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 PI3HDX1212ZLDEX part is unused and in its original packaging.
Return procedure for PI3HDX1212ZLDEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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