Diodes Incorporated PI3C3306LE

Overview

PI3C3306LE from Diodes Incorporated is a 2-bit, dual-channel, active-low bus switch IC operating at 2.5 V or 3.3 V supply, featuring 5 Ω on-resistance, <0.25 ns propagation delay (A↔B), and >400 MHz bandwidth. It enables high-fidelity signal routing in DDR memory buses, PCIe interconnects, and hot-pluggable peripheral interfaces where rail-to-rail switching and minimal ground bounce are critical.

For engineers reviewing the PI3C3306LE datasheet, PI3C3306LE pinout, PI3C3306LE application, or PI3C3306LE equivalent, key selection criteria include individual active-low enable timing (tPZL ≤ 9.8 ns @ 2.5 V), 5 V I/O tolerance with 2.5 V core operation, and TSSOP-8 package compatibility for space-constrained board layouts.

Technical Context

The PI3C3306LE implements two independent analog bus switches controlled by separate active-low BE1/BE2 inputs, each connecting A1↔B1 and A2↔B2 with no added logic delay-only RC-limited transient response governed by 5 Ω R_ON and load capacitance. Its CMOS transmission-gate architecture supports bidirectional signal flow without direction control pins.

It operates across –40°C to +85°C ambient with V_CC = 2.5 V ±10% or 3.3 V ±10%, tolerates input voltages up to +5.5 V regardless of supply, and maintains high-impedance isolation (I_OZH ≤ ±1 µA) when disabled-enabling safe hot insertion into live backplanes.

Key Specifications

Pinout & Package

PI3C3306LE is housed in an 8-pin, 173-mil wide plastic TSSOP (Package Code L), RoHS-compliant and Pb-free (E suffix), with 0.65 mm lead pitch and exposed pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74CBT3245APW and PI3CH4812LEX, PI3C3306LE uniquely balances 2.5 V operation, 5 V I/O tolerance, and per-channel active-low enables-making it optimal for mixed-voltage hot-swap systems where timing predictability and interface flexibility are non-negotiable.

Availability

PI3C3306LE is available at Aetrix Electronics and suitable for DDR memory isolation, PCIe lane multiplexing, and USB 2.0 data line switching requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for PI3C3306LE 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 PI3C3306LE belongs to Diodes' Pericom® high-speed interface product line, engineered specifically for low-latency, low-noise signal routing in memory, storage, and serial interconnect applications demanding sub-nanosecond timing fidelity.

FAQ

What is the maximum allowable input voltage on A/B pins when V_CC = 2.5 V?

The PI3C3306LE supports DC input voltages from –0.5 V to +5.5 V on all A and B pins, independent of V_CC. This allows safe interfacing with 5 V logic while operating from a 2.5 V supply-no external level shifters needed. The internal clamp diodes activate at –0.73 V (VIK), protecting against negative transients.

Can BE1 and BE2 be tied together for simultaneous control of both channels?

Yes-BE1 and BE2 may be connected to a common active-low control signal to operate both switches synchronously. However, doing so eliminates independent channel control. When tied, ensure the driving source can sink ≥2× I_IL (±1 µA each), and maintain proper PCB layout to avoid coupling-induced false enables.

Is decoupling capacitor placement critical for PI3C3306LE performance?

Yes-place a 0.1 µF X7R ceramic capacitor between V_CC and GND within 2 mm of the device, plus a 4.7 µF bulk capacitor nearby. Poor decoupling increases ground bounce during switching transitions, degrading the <400 MHz bandwidth and causing timing jitter in high-speed data paths.

Does PI3C3306LE support hot insertion in systems with uncontrolled power sequencing?

No-it requires V_CC to be applied before any signal or control voltage. If power sequencing cannot be guaranteed, add a supervisor IC (e.g., TPS3808) to hold BE1/BE2 high until V_CC stabilizes above 2.3 V. Failure to observe this causes undefined output states and potential bus contention.