Diodes Incorporated PI3CH480LE+DLX

Overview

PI3CH480LE+DLX from Diodes Incorporated is a 4-channel, 2:1 analog multiplexer/demultiplexer with tri-state outputs, designed for high-bandwidth signal routing in hot-plug-capable systems. It operates at 1.8V/2.5V/3.3V supply voltages, delivers 500 MHz –3dB bandwidth, features 4–8 Ω on-resistance, and supports rail-to-rail input switching (0–5V with 3.3V V_CC). It is used in PCIe Gen2/3 switch fabric interconnects and high-speed USB 3.0 data path selection.

For engineers reviewing the PI3CH480LE+DLX datasheet, PI3CH480LE+DLX pinout, PI3CH480LE+DLX application, or PI3CH480LE+DLX equivalent, key selection criteria include its 500 MHz bandwidth, sub-0.3 ns propagation delay contribution, 5V I/O tolerance across all supply states, and support for hot insertion in backplane applications requiring low ground bounce and zero added timing skew.

Technical Context

The PI3CH480LE+DLX implements four independent bidirectional 2:1 analog switches controlled by a single select (S) and active-low enable (EN) input per channel. Each switch exhibits near-zero intrinsic propagation delay - only RC-limited by on-resistance (≤8 Ω) and load capacitance (e.g., 10 pF yields ~0.3 ns time constant).

Its architecture enables simultaneous switching of high-speed differential or single-ended signals without introducing ground bounce or logic-level-dependent timing variation. The device maintains 5V I/O tolerance regardless of V_CC state (ON or OFF), and supports hot insertion via robust ESD protection (8 kV HBM) and transient overvoltage handling up to 6 V on I/O pins.

Key Specifications

Pinout & Package

PI3CH480LE+DLX is packaged in a 16-pin UQFN3x3-16 (ZHD) with exposed thermal pad connected to GND. Pinout matches the ZHD variant per Diodes DS40329 Rev 5-2.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar analog multiplexer applications.

Compared with TS3USB30E and ADG732BRUZ, PI3CH480LE+DLX uniquely balances 4-channel integration, 500 MHz bandwidth, 1.8–3.3 V operation, 5 V I/O tolerance in all states, and hot-plug resilience - making it optimal for multi-standard, mixed-voltage, high-reliability interconnect applications.

Availability

PI3CH480LE+DLX is available at Aetrix Electronics and suitable for PCIe switch fabric, USB 3.0 port multiplexing, and HDMI source selection requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for PI3CH480LE+DLX 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 power management solutions for industrial, computing, and communications markets.

The PI3CH480 belongs to Diodes' Pericom high-speed signal integrity product line, engineered specifically for low-latency, low-distortion analog switching in next-generation serial data interfaces including PCIe, USB, HDMI, and DisplayPort.

FAQ

Is PI3CH480LE+DLX compatible with 1.8 V logic control signals?

Yes. The device accepts 1.2 V minimum VIH at 1.8 V V_CC, ensuring reliable recognition of standard 1.8 V LVCMOS logic levels on S and EN inputs. Control inputs are also 5 V tolerant, allowing direct interfacing with higher-voltage controllers without level shifters.

Does PI3CH480LE+DLX require external pull-up or pull-down resistors on control pins?

No. Internal weak pull-downs on EN and S pins ensure defined logic states during power-up or floating conditions. External resistors are unnecessary unless specific timing or noise immunity requirements dictate otherwise per system-level validation.

Can PI3CH480LE+DLX be used to switch differential signals like PCIe or USB 3.0 pairs?

Yes. Its matched switch characteristics (RON flatness ≤2 Ω, crosstalk ≤–60 dB, and propagation delay skew <0.1 ns between paired channels) preserve differential signal integrity. Layout best practices - such as symmetrical trace lengths and tight coupling - must still be followed.

What is the thermal pad connection requirement for the UQFN package?

The center thermal pad (Pin 16 in ZHD) must be soldered to a solid GND plane on the PCB for optimal thermal dissipation and EMI suppression. Diodes recommends a 3×3 mm thermal pad with ≥4 thermal vias to inner/ground layers, per DS40329 mechanical guidelines.