Diodes Incorporated PI5C3384Q

Overview

PI5C3384Q from Pericom Semiconductor is a 10-bit, 2-port bus switch with dual active-low bus enable inputs (BEA, BEB), 5 Ω typical on-resistance, near-zero propagation delay (0.25 ns), and ultra-low quiescent current (0.1 µA typ). It directly connects Bus A (A0–A9) and Bus B (B0–B9) in bidirectional mode for high-speed data routing in notebook and embedded system interconnects.

For engineers reviewing the PI5C3384Q datasheet, PI5C3384Q pinout, PI5C3384Q application, or PI5C3384Q equivalent, key selection criteria include its 5 Ω R_ON, 0.25 ns propagation delay, dual independent 5-bit enable control, 5 V operation, and QSOP-24 package compatibility with space-constrained PCB layouts.

Technical Context

The PI5C3384Q implements two independent 5-bit switch banks-upper (A5–A9/B5–B9) and lower (A0–A4/B0–B4)-each controlled by separate active-low enable signals (BEB and BEA). This architecture enables selective isolation of bus segments without signal inversion or timing skew.

Each switch operates as a low-impedance pass gate with no internal logic or level-shifting; it passes DC and AC signals transparently when enabled, and presents high-impedance (Hi-Z) termination when disabled. Input capacitance is 6 pF, and on-capacitance is 8 pF, supporting clean signal integrity up to 100 MHz.

Key Specifications

Pinout & Package

PI5C3384Q is housed in a 24-pin 150-mil wide plastic QSOP (Quad Small Outline Package) with standard 0.635 mm lead pitch and gull-wing leads. The package meets JEDEC MS-013AC and is RoHS-compliant (Pb-free & Green option available).

Key Features

Applications

Equivalent & Alternatives

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

Compared with PI5C3384L and SN74CBT3384CPWR, the PI5C3384Q offers optimal trade-off of compact QSOP footprint, lowest quiescent current (0.1 µA), and proven reliability in consumer portable systems-making it ideal for cost-sensitive, space-limited 5 V interconnects where extended temp rating is not required.

Availability

PI5C3384Q is available at Aetrix Electronics and suitable for notebook expansion interfaces, industrial backplane interconnects, embedded media card routing, and legacy peripheral multiplexing requiring stable component supply and long-term lifecycle support.

Supply support for PI5C3384Q 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 legacy bus switch portfolio remains widely deployed in computing and industrial platforms.

The PI5C3384 series belongs to Pericom's low-voltage CMOS bus switch product line, designed specifically for zero-delay, low-power, bidirectional signal routing in 5 V system interconnects where signal integrity and power efficiency are critical.

FAQ

What is the maximum data rate supported by PI5C3384Q?

The PI5C3384Q supports data rates up to 100 Mbps in practice, based on its 5 Ω R_ON, 8 pF on-capacitance, and 0.25 ns propagation delay. Signal integrity depends on PCB layout and load capacitance; for 50 pF loads, rise/fall times remain sub-nanosecond. It is not rated for differential protocols like LVDS or PCIe Gen2+ but excels in parallel TTL/CMOS bus applications.

Can PI5C3384Q operate at 3.3 V?

No. PI5C3384Q is specified only for 4.5 V to 5.5 V operation. Its internal enable logic and switch threshold design require ≥4.5 V V_CC to guarantee proper BEA/BEB recognition and 5 Ω R_ON. For 3.3 V systems, consider Diodes' PI3CHT3245 or ON Semiconductor's NLAS3245, which are 3.3 V–compatible equivalents.

Does PI5C3384Q include ESD protection on I/O pins?

Yes. The device includes built-in ESD protection rated to ±2 kV HBM (Human Body Model) on all A and B pins, as confirmed in Pericom's reliability report PS7029F. No external TVS diodes are required for typical board-level ESD environments, though system-level IEC 61000-4-2 compliance may still require additional front-end protection.

How does the dual BE control improve system design flexibility?

Dual BE inputs (BEA for A0–A4/B0–B4; BEB for A5–A9/B5–B9) allow independent gating of two 5-bit segments. This enables partial bus isolation-for example, disabling legacy IDE lower bits while keeping upper bits active for SATA negotiation-reducing software overhead and avoiding full bus reset sequences during dynamic reconfiguration.