Diodes Incorporated PI3DPX1203CZHEX

Overview

PI3DPX1203CZHEX from Diodes Incorporated is a DisplayPort 2.1/1.4 linear ReDriver IC supporting UHBR10 (10 Gbps), HBR3 (8.1 Gbps), HBR2 (5.4 Gbps), and RBR link rates. It features four independent DP Main Link channels, 3.3 V single-supply operation, pin-strap or I²C programmable equalization/voltage swing/flat gain, and AUX Link Training Transparent Mode for DP Alt Mode Type-C source/sink applications.

For engineers reviewing the PI3DPX1203CZHEX datasheet, PI3DPX1203CZHEX pinout, PI3DPX1203CZHEX application, or PI3DPX1203CZHEX equivalent, key selection criteria include UHBR10 signal integrity margin, linear equalizer DFE compatibility, TQFN-42 package thermal performance, and I²C address configurability in multi-device DP routing systems.

Technical Context

The PI3DPX1203CZHEX implements a linear ReDriver architecture with per-channel 4-bit input equalization, 2-bit output voltage swing control, and 2-bit flat gain adjustment-enabling precise inter-symbol interference compensation across varying PCB trace lengths and connector losses. Its AUX Link Training Transparent Mode preserves native DisplayPort link training handshake integrity between source and sink.

Unlike decision-based redrivers, it delivers latency-free variable frame rate (VFR) support and achieves ≤0.15 UI additive jitter at 10 Gbps, enabling robust UHBR10 compliance without retiming-induced timing uncertainty. The device operates exclusively on 3.3 V and supports intra- and inter-channel polarity swap for layout flexibility.

Key Specifications

Pinout & Package

PI3DPX1203CZHEX is housed in a 42-pin Very Thin Quad Flat No-Lead (TQFN) package measuring 3.5 mm × 9.0 mm with 0.4 mm pitch and wettable flank leads for automated optical inspection (AOI). Thermal pad exposed on underside enhances power dissipation under sustained 10 Gbps operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar DisplayPort linear ReDriver applications.

Compared with TUSB546IRWBR and PS176, PI3DPX1203CZHEX uniquely delivers zero-latency UHBR10 signal restoration with per-lane analog tuning - critical for real-time graphics, VR rendering, and variable refresh rate displays where timing determinism is non-negotiable.

Availability

PI3DPX1203CZHEX is available at Aetrix Electronics and suitable for notebook docking, GPU extension, active adapter, and industrial KVM applications requiring stable component supply, long-term lifecycle assurance, and full VESA DP2.1 compliance.

Supply support for PI3DPX1203CZHEX 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, specializing in high-performance analog, logic, and connectivity solutions for computing, consumer, and industrial markets.

The PI3DPX product line targets next-generation DisplayPort signal integrity challenges, delivering linear ReDriver ICs optimized for UHBR10 physical layer compliance, low-latency video transport, and seamless integration with USB-C Alt Mode and PD controller ecosystems.

FAQ

Does PI3DPX1203CZHEX require external reference clock or crystal?

No. The PI3DPX1203CZHEX is a linear ReDriver and does not perform clock data recovery (CDR) or retiming. It operates without any external timing reference - its analog signal path regenerates amplitude and equalizes frequency response directly from the incoming DP Main Link waveform.

Can PI3DPX1203CZHEX be used in both source-side and sink-side DP implementations?

Yes. The device supports bidirectional linear re-driving and is explicitly qualified for both source-side (e.g., GPU output stage) and sink-side (e.g., monitor input front-end) placement. Its AUX Link Training Transparent Mode ensures native DP link training remains unaltered regardless of position.

What is the maximum supported PCB trace length with PI3DPX1203CZHEX at UHBR10?

At UHBR10 (10 Gbps), the device compensates for up to 22 inches of FR4 microstrip (4-mil trace, 5-mil space, ε_r=4.2) with 0.5 oz copper, based on Diodes' characterization using VESA-compliant test fixtures and channel models defined in DS43254 Rev 4-2.

Is PI3DPX1203CZHEX qualified for automotive AEC-Q100?

No. The PI3DPX1203CZHEX is rated for commercial temperature range (0°C to +70°C). For automotive use, Diodes offers the industrial-grade variant PI3DPX1203CZHIEX (–40°C to +105°C), which is manufactured in IATF 16949 certified facilities and supports PPAP documentation upon request.