Diodes Incorporated PI3USB31534ZTFEX

Overview

PI3USB31534ZTFEX from Diodes Incorporated is a 6:4 differential crossbar switch IC designed for USB Type-C interface routing, supporting simultaneous USB 3.1 Gen2 (10 Gb/s) and HDMI 2.0 signal switching. It features -2.2 dB insertion loss at 10 Gb/s, -15 dB return loss, and 7 GHz -3 dB bandwidth, enabling high-fidelity signal integrity in ultrabooks and docking stations.

For engineers reviewing the PI3USB31534ZTFEX datasheet, PI3USB31534ZTFEX pinout, PI3USB31534ZTFEX application, or PI3USB31534ZTFEX equivalent, key selection criteria include I²C-configurable channel mapping, SBU pin voltage tolerance (-0.3 V to 5.5 V), industrial temperature range (-40°C to +85°C), and UQFN-34 package compatibility with high-density PCB layouts.

Technical Context

This device implements a fully differential 6-input × 4-output analog multiplexer with independent control logic for USB 3.1 Gen2 TX/RX pairs and HDMI data/clock channels. It supports dynamic reconfiguration via I²C (A0/A1 address pins) and routes HPD/HEAC signals to SBU pins during HDMI operation.

The switch maintains signal fidelity through low crosstalk (-38 dB at 10 Gb/s) and high off-isolation (-22 dB at 10 Gb/s), with supply regulation limited to 3.0–3.6 V. Its 7 GHz bandwidth ensures compliance with USB 3.1 Gen2 and HDMI 2.0 eye diagram requirements under real-world PCB trace losses.

Key Specifications

Pinout & Package

Package: 34-contact Ultra-Thin Quad Flat No-Lead (UQFN), 2.5 mm × 4.5 mm, 0.4 mm pitch, Pb-free and RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB Type-C crossbar switching applications.

Compared with TS3USB30E and FSUSB42UMX, PI3USB31534ZTFEX uniquely integrates HDMI 2.0 clock/data routing, SBU-level HPD/HEAC handling, and I²C-addressable configuration-enabling true dual-protocol USB-C implementations without external glue logic.

Availability

PI3USB31534ZTFEX is available at Aetrix Electronics and suitable for ultrabooks, docking stations, and multi-mode monitors requiring stable component supply, high-speed signal integrity, and USB Type-C Alt Mode flexibility.

Supply support for PI3USB31534ZTFEX 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, specializing in high-performance interface, power management, and signal integrity solutions for consumer and industrial markets.

The PI3USB31534 product line targets USB Type-C ecosystem integration, delivering configurable, high-bandwidth analog switches that simplify dual-protocol (USB + HDMI) port design in space-constrained portable devices.

FAQ

What USB and HDMI standards does PI3USB31534ZTFEX support?

PI3USB31534ZTFEX supports USB 3.1 Gen2 at 10 Gb/s and HDMI 2.0 at up to 6 Gb/s per TMDS lane. It meets HDMI 2.0 electrical specifications including DC balance, skew tolerance, and eye diagram compliance. The 7 GHz -3 dB bandwidth and -2.2 dB insertion loss at 10 Gb/s ensure full Gen2 signal integrity across typical PCB trace lengths.

How is HDMI Hot Plug Detect (HPD) and HDMI Ethernet Channel (HEAC) handled?

During HDMI operation, HPD and HEAC signals are automatically multiplexed to the SBU1 and SBU2 pins of the USB Type-C connector. These pins support voltage swings from -0.3 V to 5.5 V, eliminating the need for external level-shifting circuitry and simplifying HDMI Alt Mode implementation in compact designs.

Can PI3USB31534ZTFEX be used in systems without I²C control?

No - I²C control is mandatory for configuring channel routing. The device requires I²C commands to select between USB-only, HDMI-only, or mixed-mode operation. Pins A0 and A1 set the I²C slave address, and I²C_SDA/I²C_SCL must be connected to a controller; there is no default or hardwired configuration mode.

What is the thermal performance of the UQFN-34 package?

The UQFN-34 (2.5 mm × 4.5 mm) package has a junction-to-board thermal resistance (ψ_JB) of 12.5°C/W and a maximum junction temperature of +125°C. Under typical 3.3 V, 100 mA operating conditions, it remains within safe thermal limits even in sealed ultrabook chassis with no forced airflow, as validated per Diodes' packaging thermal characterization data.