Diodes Incorporated PI5C16211AEX

Overview

PI5C16211AEX from Pericom Semiconductor is a 24-bit CMOS bus switch IC with dual 12-bit configurable channels, 5 Ω typical on-resistance at 4.5 V, <0.25 ns propagation delay, and ultra-low quiescent current (0.2 µA). It serves as a high-speed bidirectional signal path selector in notebook memory buses and low-power embedded data routing.

For engineers reviewing the PI5C16211AEX datasheet, PI5C16211AEX pinout, PI5C16211AEX application, or PI5C16211AEX equivalent, key selection criteria include on-resistance matching, OE-controlled channel isolation, TVSOP-56 thermal performance, and industrial temperature support (–40°C to +85°C).

Technical Context

This device implements two independent 12-bit bus switch sections, each controlled by separate output-enable inputs (1OE, 2OE), enabling selective activation of A↔B bidirectional paths without direction pins. Each channel supports TTL/CMOS-compatible logic levels and operates with no internal latching or timing circuitry.

Switching relies solely on MOSFET pass-transistor topology with rail-to-rail analog conduction; propagation delay is dominated by RC time constant (RON × CL), not internal logic-verified at ≤0.25 ns for 50 pF load. Power supply range is strictly 4.0 V to 5.5 V, with absolute maximum ratings up to 7.0 V on all pins.

Key Specifications

Pinout & Package

PI5C16211AEX is packaged in a Pb-free, green 56-pin TVSOP (173-mil width, package code K) with 0.4 mm pitch and exposed thermal pad. Pin 1 marked via notch; pin 1 location confirmed at top-left corner of top view.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74CBT16212DGGR and PI5C16211KEX, PI5C16211AEX delivers identical switching performance in a mid-width TSSOP package-offering optimal balance of board area, thermal profile, and compatibility with legacy 240-mil land patterns.

Availability

PI5C16211AEX is available at Aetrix Electronics and suitable for notebook memory isolation, industrial I/O expansion, low-power peripheral multiplexing, and embedded controller bus routing requiring stable component supply and long-term lifecycle assurance.

Supply support for PI5C16211AEX 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 2016.

The PI5Cxx series targets low-latency, low-power bus switching for portable and embedded systems-designed specifically to replace mechanical jumpers and discrete FETs in space- and power-constrained digital interconnects.

FAQ

Is PI5C16211AEX compatible with 3.3 V logic systems?

No-PI5C16211AEX requires a minimum VCC of 4.0 V and is specified only for 4.0–5.5 V operation. Its input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) and on-resistance are characterized at 5 V. Using it with 3.3 V supplies risks undefined switching behavior and increased RON, violating Absolute Maximum Ratings.

Can both 12-bit sections be enabled simultaneously without interference?

Yes-1OE and 2OE operate independently; enabling both simultaneously creates two parallel 12-bit conductive paths with no internal coupling. Electrical isolation between sections is maintained by separate VCC/GND connections and physical layout separation in the die, verified by CIO(OFF) ≤ 5.5 pF.

What is the maximum data rate supported by PI5C16211AEX?

While not rated for a specific serial data rate, the device supports parallel bus frequencies exceeding 100 MHz due to its <0.25 ns propagation delay and 5 Ω RON. Real-world limit depends on trace length, load capacitance, and driver strength-typical use cases include 66 MHz PCI-X and DDR1 address buses with proper termination.

Does PI5C16211AEX require external pull-up or pull-down resistors on OE pins?

No-OE inputs have CMOS-compatible thresholds and ≤10 µA leakage; they may be driven directly from FPGA or microcontroller GPIO. However, if left unconnected, OE pins default to high (disabled state) due to internal weak pull-up-explicit control is recommended for deterministic startup behavior.