Diodes Incorporated PI3C3306UE

Overview

PI3C3306UE from Diodes Incorporated is a 2-bit, dual-channel bus switch with active-low individual enables, designed for high-bandwidth signal routing in 2.5V/3.3V systems. It features 5Ω on-resistance, <0.25ns propagation delay (A↔B), >400MHz bandwidth, and 5V-tolerant I/O-enabling hot-insertion in PCIe, USB, and memory interface switching applications.

For engineers reviewing the PI3C3306UE datasheet, PI3C3306UE pinout, PI3C3306UE application, or PI3C3306UE equivalent, key selection criteria include enable polarity (active-low), rail-to-rail 2.5V/3.3V operation, 5V I/O tolerance, low on-resistance matching, and MSOP-8 thermal performance under hot-swap conditions.

Technical Context

The PI3C3306UE implements two independent bilateral analog switches controlled by separate active-low BE pins, allowing asynchronous channel gating without crosstalk. Each switch exhibits near-zero propagation delay (<0.25ns) and maintains signal integrity up to 400MHz due to matched 5Ω R_ON and low capacitance (C_OFF = 5.0pF, C_IN = 3.5pF).

It supports mixed-voltage interfacing: logic inputs tolerate up to +3.6V regardless of V_CC (2.5V or 3.3V), and I/O pins are 5V-tolerant-enabling safe level translation between legacy 5V controllers and modern low-voltage buses while maintaining hot-insertion capability.

Key Specifications

Pinout & Package

Package: 8-pin Mini Small Outline Package (MSOP-U), 3.0mm × 3.0mm body, 0.65mm pitch, JEDEC MO-187AC compliant, with exposed pad for thermal enhancement.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 2-bit bus switch applications.

Compared with SN74CBT3245APW and PI3C3245UE, the PI3C3306UE uniquely delivers dual independent 2-bit switching with active-low enables, 5V I/O tolerance, and MSOP packaging-making it optimal for space-constrained, hot-pluggable, mixed-voltage applications requiring per-signal gating control.

Availability

PI3C3306UE is available at Aetrix Electronics and suitable for PCIe Gen1 switching, USB 2.0 multiplexing, and DDR bus isolation requiring stable component supply across industrial, telecom, and embedded computing programs.

Supply support for PI3C3306UE 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, high-reliability components for power management, signal integrity, and protection applications.

The PI3C3306UE belongs to Diodes' Pericom® high-speed bus switch product line, engineered specifically for low-latency, hot-pluggable signal routing in next-generation computing and communications infrastructure.

FAQ

What is the recommended power-up sequence for PI3C3306UE?

Apply V_CC before any signals to A/B or BE pins. This prevents latch-up and ensures predictable Hi-Z startup behavior. The datasheet specifies that BE pins must be held HIGH (via pull-up) during power-up to avoid unintended conduction-failure to do so may cause bus contention or excessive current draw.

Does PI3C3306UE support 1.8V operation?

No. The PI3C3306UE is specified only for 2.5V or 3.3V supply operation. At 1.8V, R_ON increases significantly (>15Ω), propagation delay degrades, and 5V I/O tolerance is no longer guaranteed. For 1.8V systems, consider the PI3C3126 or SN74LVC1G3157 families instead.

Can BE1 and BE2 be tied together?

Yes, BE1 and BE2 may be connected to a single control signal if simultaneous switching of both channels is acceptable. However, doing so forfeits independent channel control-critical for applications like USB D+/D− skew management or PCIe lane steering where asymmetric enable timing is required.

Is the MSOP package thermally adequate for continuous 120mA per channel?

Yes. The MSOP-U package (JEDEC MO-187AC) has a θ_JA of 180°C/W. At 120mA through 5Ω, power dissipation per channel is 72mW, resulting in <13°C junction rise above ambient-well within the –40°C to +85°C operating range without heatsinking.