Diodes Incorporated PI3CH480QE

Overview

PI3CH480 from Diodes Incorporated is a 4-channel, 2:1 analog multiplexer/demultiplexer with tri-state outputs, designed for high-bandwidth signal routing in 1.8V/2.5V/3.3V systems. It delivers 500 MHz bandwidth, <0.3 ns propagation delay, 4–8 Ω on-resistance (depending on supply), and rail-to-rail switching up to 5 V with 3.3 V supply - enabling clean HDMI, USB 2.0, and PCIe Gen1 signal path switching.

For engineers reviewing the PI3CH480 datasheet, PI3CH480 pinout, PI3CH480 application, or PI3CH480 equivalent, key selection criteria include hot-plug capability, 5 V I/O tolerance across all supply voltages, sub-10 ns enable/disable timing, and package-specific thermal performance in TSSOP-16, QSOP-16, and UQFN3x3-16 footprints.

Technical Context

The PI3CH480 implements four independent bidirectional 2:1 analog switches controlled by a single select line (S) and an active-low enable (EN). Each switch supports rail-to-rail analog input ranges (0–5 V at 3.3 V VCC; 0–3.3 V at 2.5 V VCC) without level-shifting circuitry.

Its architecture features low-capacitance paths (CIN = 1.6 pF typ., CON = 8.4 pF typ.), –60 dB crosstalk and off-isolation, and ESD-hardened inputs (8 kV HBM). Switching is fully complementary-MOS with no ground bounce, and quiescent current remains ≤1.5 mA across all supported supply voltages.

Key Specifications

Pinout & Package

PI3CH480 is available in three RoHS-compliant, lead-free packages: 16-pin TSSOP (L), 16-pin QSOP (Q), and 16-pin UQFN3×3 (ZHD). All variants share identical pin functionality and logic mapping.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TS3A227E and ADG732, the PI3CH480 uniquely combines 500 MHz bandwidth, 5 V I/O tolerance across 1.8–3.3 V supplies, and hot-plug capability - making it the only option among the three suitable for USB 2.0 and HDMI source switching in industrial environments.

Availability

PI3CH480 is available at Aetrix Electronics and suitable for USB 2.0 docking stations, HDMI AV switchers, and PCIe Gen1 FPGA interconnects requiring stable component supply across TSSOP, QSOP, and UQFN package variants.

Supply support for PI3CH480 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 analog switch portfolio, engineered specifically for high-bandwidth, low-distortion signal routing in mixed-voltage digital interface applications - with emphasis on hot-plug resilience and ESD robustness.

FAQ

What supply voltage ranges does the PI3CH480 support, and how do they affect analog input range?

The PI3CH480 operates from 1.8 V ±10%, 2.5 V ±10%, or 3.3 V ±10%. Analog input range scales with supply: at 3.3 V, it supports 0–5 V signals; at 2.5 V, 0–3.3 V; at 1.8 V, 0–1.6 V. This rail-to-rail capability eliminates external bias networks in mixed-voltage systems.

Can the PI3CH480 be used to switch differential signals like USB D+/D− without skew or imbalance?

Yes - its matched switch paths deliver <0.3 ns propagation delay and <100 ps channel-to-channel skew. With identical R_ON (±0.5 Ω) and C_ON (±0.3 pF) across all four channels, it preserves differential pair integrity for USB 2.0, LVDS, and MIPI CSI-2 applications.

Is the center thermal pad on the UQFN3x3-16 (ZHD) package required to be connected to ground?

Yes - the exposed center pad in the ZHD package must be soldered to a solid PCB ground plane. It serves as both thermal dissipation path (reducing θ_JA by ~25 °C/W) and electrical ground reference for internal ESD structures. Omitting this connection risks thermal shutdown and reduced ESD immunity.

Does the PI3CH480 require external pull-up or pull-down resistors on the S or EN pins?

No - internal weak pull-downs on EN and S ensure defined logic states during power-up or floating conditions. However, for deterministic timing in high-noise environments, a 10 kΩ pull-down on EN and 100 kΩ pull-down on S are recommended to suppress noise-induced glitches during hot insertion.