Diodes Incorporated PI3HDX12212ZLDEX

Overview

PI3HDX12212ZLDEX from Diodes Incorporated is a 1-to-2 active HDMI 2.1 de-multiplexing linear ReDriver supporting 4-lane operation at up to 12.0 Gbps, with CTLE equalization (+14 dB max at 6 GHz), single 3.3 V ±0.3 V supply, and industrial temperature range (–40°C to +85°C). It enables HDMI2.1 source splitting to dual displays in docking stations and mobile workstations.

For engineers reviewing the PI3HDX12212ZLDEX datasheet, PI3HDX12212ZLDEX pinout, PI3HDX12212ZLDEX application, or PI3HDX12212ZLDEX equivalent, key selection factors include its 12 Gbps lane rate support, quad-level pin-strapped EQ/flat gain control, automatic input detection for power saving, TQFN-40 (3 × 6 mm) package, and HDMI2.1-compliant linear ReDriver architecture without signal regeneration.

Technical Context

The PI3HDX12212ZLDEX implements four independent CTLE equalizers at input channels to suppress ISI-induced jitter and compensate PCB trace loss up to 20 dB at 6 GHz. Its linear ReDriver topology preserves DFE pre-shoot/de-emphasis waveforms end-to-end, enabling system-level link training between HDMI source and dual sinks.

Quad-level pin-strapping configures both equalizer gain (0 / +7 / +10.5 / +14 dB) and flat gain/output swing linearity (low/med/high/linear), while input signal presence detection triggers automatic entry into low-power mode when no valid TMDS clock is detected.

Key Specifications

Pinout & Package

PI3HDX12212ZLDEX is housed in a 40-pin TQFN (3 mm × 6 mm, 0.4 mm pitch) with exposed thermal pad. Pin functions are defined per Diodes Inc. datasheet Rev 3 (June 2021), including four differential input pairs (IN0+/- through IN3+/-), eight differential output lanes (OUTA0+/- to OUTA3+/- and OUTB0+/- to OUTB3+/-), four EQ/flat gain strap pins (EQ0–EQ3), and dedicated power/ground terminals.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar HDMI 2.1 de-multiplexing applications.

Compared with TI TDP142RHBR and MAX96752GTJ+T, PI3HDX12212ZLDEX delivers fixed-function, zero-latency 1-to-2 HDMI2.1 splitting with minimal external components, making it optimal for cost-sensitive, space-constrained industrial and mobile docking where protocol transparency and deterministic behavior are mandatory.

Availability

PI3HDX12212ZLDEX is available at Aetrix Electronics and suitable for mobile workstation docking, multi-display gaming notebooks, and industrial all-in-one PCs requiring stable component supply and long-term manufacturability.

Supply support for PI3HDX12212ZLDEX 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 analog ICs, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.

The PI3HDX12212 product line targets high-speed interface signal integrity enhancement for HDMI, DisplayPort, and USB protocols, specifically addressing insertion loss compensation and multi-sink distribution in compact portable and industrial systems.

FAQ

What is the maximum supported HDMI version and resolution?

The PI3HDX12212ZLDEX supports HDMI 2.1 at full 12.0 Gbps per lane, enabling resolutions up to 8K@60Hz (4:2:0) or 4K@120Hz (4:4:4) with HDR and VRR. It maintains backward compatibility with HDMI 2.0 (6 Gbps), HDMI 1.4 (3.4 Gbps), and HDMI 1.2 (2.5 Gbps) standards without firmware update.

Does this device require I²C or other serial configuration?

No. The PI3HDX12212ZLDEX uses only hardware pin-strapping (EQ0–EQ3) for configuration of equalizer gain, flat gain, and output linearity. There is no I²C interface, register map, or firmware dependency - simplifying layout and eliminating boot-time initialization delays.

Can it be used in DP++ (DisplayPort++) mode?

Yes. Per Diodes' application guidance, the PI3HDX12212ZLDEX supports DP++ hybrid operation: it passes DisplayPort signals with HDMI-compatible voltage levels and timing, enabling use in systems where a single port negotiates either protocol based on sink capability.

Is thermal pad soldering required for reliable operation?

Yes. The exposed thermal pad on the TQFN-40 package must be soldered to a solid copper thermal plane on the PCB. Diodes specifies minimum 8×8 mm² copper area with ≥4 thermal vias (0.3 mm diameter) to achieve specified junction temperature limits under full 12 Gbps operation at +85°C ambient.