Diodes Incorporated PI5C3384S

Overview

PI5C3384S from Pericom Semiconductor is a 10-bit, 2-port CMOS bus switch with dual active-low bus enable inputs (BEA, BEB), 5Ω typical on-resistance, near-zero propagation delay (0.25 ns typ), and ultra-low quiescent current (0.1 µA typ). It directly connects Bus A (A0–A9) to Bus B (B0–B9) in ON state and isolates ports in high-impedance OFF state, used in notebook memory expansion and PCI-to-ISA bridge signal routing.

For engineers reviewing the PI5C3384S datasheet, PI5C3384S pinout, PI5C3384S application, or PI5C3384S equivalent, key selection criteria include verified 5Ω R_ON, dual independent 5-bit control, SOIC-24 package compatibility, and sub-1 ns enable/disable timing under 5V operation.

Technical Context

The PI5C3384S implements two independent 5-bit bidirectional analog switches controlled by separate active-low BEA and BEB signals, enabling selective connection of A0–A4↔B0–B4 and A5–A9↔B5–B9. Each switch path exhibits symmetrical conduction with no polarity dependence and zero added propagation delay beyond RC time constant.

Its CMOS transmission-gate architecture ensures rail-to-rail analog signal pass-through, low charge injection (<1 pC), and negligible ground bounce. The device operates over –40°C to +85°C with V_CC = 4.5–5.5 V and supports TTL/CMOS logic-level control inputs.

Key Specifications

Pinout & Package

PI5C3384S is housed in a 24-pin 300-mil wide plastic SOIC (Small Outline Integrated Circuit) package with standard 1.27 mm pitch, JEDEC MS-013 compliant footprint, and Pb-free/Green options available.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PI5C3384L, the PI5C3384S offers easier hand-soldering and better thermal dissipation in SOIC form; compared with PI5C32384S, it delivers lower R_ON and higher bandwidth for general-purpose 5 V bus isolation without added termination complexity.

Availability

PI5C3384S is available at Aetrix Electronics and suitable for notebook memory expansion, PCI-to-ISA bridge signal routing, and embedded test access port switching requiring stable component supply and long-term industrial availability.

Supply support for PI5C3384S 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 (acquired by Diodes Incorporated in 2016) specialized in high-speed interface, timing, and signal-integrity solutions for computing, communications, and consumer electronics.

The PI5C3384 series belongs to Pericom's low-voltage CMOS bus switch product line, designed specifically for zero-delay, low-noise bidirectional signal routing in 5 V mixed-signal systems.

FAQ

What is the maximum operating frequency supported by PI5C3384S?

The PI5C3384S does not specify a hard maximum frequency but supports signal edges with <0.25 ns intrinsic delay and 6 pF input capacitance. In practice, it reliably handles 100 MHz parallel bus signals (e.g., ISA, LPC) and 12 MHz serial buses (e.g., SMBus, I²C) when driven by standard 5 V TTL/CMOS sources with ≤50 pF load.

Can PI5C3384S operate at 3.3 V?

No. PI5C3384S is specified only for V_CC = 4.5 V to 5.5 V operation. Its internal CMOS switch threshold and R_ON performance are optimized for 5 V logic levels. For 3.3 V systems, consider Diodes Inc.'s PI3CHx family or TI's SN74CBT3384, which are explicitly characterized at 3.3 V.

Is PI5C3384S pin-compatible with PI5C3384C?

Yes. PI5C3384S and PI5C3384C share identical pinout, package dimensions, and electrical interface. The 'C' suffix denotes enhanced ESD rating (±4 kV HBM vs. ±2 kV), but both use the same SOIC-24 footprint and functional truth table - making them direct drop-in replacements in most designs.

Does PI5C3384S require external pull-up or pull-down resistors on BEA/BEB inputs?

No. BEA and BEB are standard CMOS inputs with guaranteed logic thresholds (V_IL ≤ 0.8 V, V_IH ≥ 2.0 V at V_CC = 5 V). They may be driven directly from microcontroller GPIOs or TTL outputs. External resistors are unnecessary unless open-drain control sources are used - in which case a 10 kΩ pull-up to V_CC is recommended.