Diodes Incorporated PI5C3384QE

Overview

PI5C3384QE from Pericom Semiconductor is a 10-bit, 2-port bus switch IC with active-low dual bus enable inputs (BEA, BEB), 5 Ω typical on-resistance, near-zero propagation delay (0.25 ns), and ultra-low quiescent current (0.2 μA typical), used to isolate or connect parallel data buses in notebook and embedded system memory expansion paths.

For engineers reviewing the PI5C3384QE datasheet, PI5C3384QE pinout, PI5C3384QE application, or PI5C3384QE equivalent, key selection criteria include bidirectional switching capability, low R_ON for signal integrity, dual independent 5-bit control, high-impedance isolation during disable, and Pb-free QSOP-24 packaging compatibility with space-constrained PCB layouts.

Technical Context

The PI5C3384QE implements two independent 5-bit bus switch sections-A0–A4/B0–B4 controlled by BEA, and A5–A9/B5–B9 controlled by BEB-each enabling direct metal-to-metal conduction when asserted low. Its CMOS-based transmission gate architecture eliminates added propagation delay beyond RC time constant (RON × CL).

It operates over –40°C to +85°C at V_CC = 5 V ±5%, supports input/output voltage ranges from –0.5 V to +7.0 V, and features clamp diodes (V_IK = –0.7 V) and short-circuit current limiting (100 mA max per output), making it suitable for hot-swap-capable backplane and I/O expander interfaces.

Key Specifications

Pinout & Package

PI5C3384QE is housed in a 24-pin plastic QSOP (150-mil wide) package with standard JEDEC MO-137AC dimensions, 0.65 mm lead pitch, and gull-wing leads compatible with reflow soldering.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 10-bit bus switch applications.

Compared with PI5C3384Q and SN74CBT3384CPWR, the PI5C3384QE offers identical functionality with mandatory Pb-free compliance and the lowest quiescent current-making it optimal for new designs targeting global regulatory alignment and battery longevity.

Availability

PI5C3384QE is available at Aetrix Electronics and suitable for notebook platform design, memory expansion modules, and embedded controller interface circuits requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for PI5C3384QE 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

Pericom Semiconductor was a fabless provider of high-speed interface and timing solutions, acquired by Diodes Incorporated in 2016; its bus switch portfolio emphasizes low-latency, low-power signal routing for portable and embedded systems.

The PI5C3384 series belongs to Pericom's high-speed analog switch product line, designed specifically for transparent, bidirectional bus isolation in space- and power-constrained computing platforms.

FAQ

Is PI5C3384QE compatible with 3.3 V logic levels?

Yes. PI5C3384QE accepts input voltages from –0.5 V to +7.0 V and operates at V_CC = 5 V ±5%, so it fully supports 3.3 V-tolerant signaling on A/B ports. Its VIH (2.0 V min) and VIL (0.8 V max) thresholds ensure reliable detection of 3.3 V logic highs and lows without level translation.

Does PI5C3384QE support hot-swap operation?

Yes. With built-in clamp diodes (VIK = –0.7 V), ±120 mA output current rating, and high-impedance disable state, PI5C3384QE safely handles live insertion/removal in backplane and modular I/O applications-provided V_CC sequencing and current limiting are maintained per datasheet guidelines.

What is the maximum capacitive load supported?

The device is characterized up to 50 pF load capacitance (CL), with propagation delay specified at that condition. While not production-tested beyond CL = 50 pF, the 5 Ω R_ON and 8 pF C_ON ensure stable operation with typical PCB traces and peripheral inputs; loads >75 pF may increase rise/fall times but not impair logic function.

Can BEA and BEB be tied together?

Yes. BEA and BEB may be connected to a single control signal if full 10-bit switching is required. Doing so eliminates independent section control but simplifies routing and reduces GPIO usage-common in memory-mapped peripheral enable schemes where granularity is unnecessary.