Diodes Incorporated PI3B16233AEX

Overview

PI3B16233AEX from Pericom Semiconductor is a 3.3V 16-bit to 32-bit FET mux/demux NanoSwitch™ used for memory bank interleaving in high-speed digital systems. It features 5 Ω ON-resistance, 4.5 ns max propagation delay, ultra-low quiescent current (0.2 mA typical), and operates from –40°C to +85°C in a 56-pin TSSOP package.

For engineers reviewing the PI3B16233AEX datasheet, PI3B16233AEX pinout, PI3B16233AEX application, or PI3B16233AEX equivalent, key selection criteria include bidirectional switching capability, rail-to-rail logic compatibility, low RC delay contribution, and support for dual 8-bit or single 16-bit multiplexing configurations.

Technical Context

The PI3B16233AEX implements a CMOS-based analog bus switch architecture with two independent select inputs (SEL1, SEL2) enabling configuration as either two 8-bit-to-16-bit multiplexers or one 16-bit-to-32-bit multiplexer. Its TEST inputs allow simultaneous connection of A port to both B1 and B2 ports when asserted HIGH.

It supports rail-to-rail logic inputs up to +3.6 V regardless of VCC (3.0–3.6 V), eliminating level-shifting requirements. The device contributes negligible propagation delay beyond intrinsic RC time constant (~0.25 ns for 50 pF load), making it suitable for timing-critical data path routing.

Key Specifications

Pinout & Package

Package: 56-pin TSSOP (240-mil wide), lead-free and RoHS-compliant (AEX suffix denotes Pb-free & Green).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar FET mux/demux applications.

Compared with PI3B16233V and SN74CBT16233DGGR, the PI3B16233AEX offers optimal balance of compact TSSOP packaging, lowest ON-resistance, integrated test functionality, and verified industrial temperature performance - critical for memory-intensive embedded systems requiring long-term reliability.

Availability

PI3B16233AEX is available at Aetrix Electronics and suitable for memory bank interleaving, high-speed data multiplexing, and notebook memory expansion requiring stable component supply and RoHS-compliant packaging.

Supply support for PI3B16233AEX 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 specializing in high-speed interface, timing, and signal-integrity solutions before its acquisition by Diodes Incorporated in 2017.

The PI3B16233 belongs to Pericom's NanoSwitch™ bus switch product line, engineered specifically for low-latency, low-power analog signal routing in memory subsystems and portable computing platforms.

FAQ

What is the maximum allowable load capacitance for reliable operation?

The PI3B16233AEX is characterized with 50 pF load capacitance in switching tests, and its RC time constant remains below 0.25 ns at that value. Operation with up to 75 pF load is supported per design validation, though rise/fall times degrade linearly beyond 50 pF - system-level timing analysis is recommended for loads exceeding this threshold.

Can the device operate with VCC = 2.5 V?

No. The PI3B16233AEX is specified only for 3.0 V to 3.6 V supply operation. At 2.5 V, internal FET thresholds are not met, resulting in undefined R_ON, increased leakage, and potential failure to pass logic thresholds - operation outside this range voids parametric guarantees.

Is hot-plug insertion supported?

Hot-plug insertion is not recommended. Power-supply sequencing requires VCC and GND to be established before applying any signals to A, B, or control pins. Violating this sequence risks latch-up or permanent damage due to parasitic SCR activation within the CMOS structure.

How does the TEST pin functionality affect normal operation?

When TEST1 and TEST2 are held LOW, the device operates per standard function table: SEL1/SEL2 determine routing between A and B1/B2. When either TEST pin is HIGH, the corresponding A port connects to both B1 and B2 simultaneously - this overrides normal select logic and is intended solely for factory test or debug, not runtime use.