Diodes Incorporated PI5C16212A

Overview

PI5C16212A from Pericom Semiconductor is a 24-bit bus exchange switch with dual 12-bit bidirectional data paths, 5 Ω on-resistance, near-zero propagation delay, and operation at 5 V ±10%. It functions as a low-latency signal path selector in high-speed digital systems, enabling dynamic data routing between four port groups (A1/A2/B1/B2) under S0–S2 control for notebook and industrial embedded applications.

For engineers reviewing the PI5C16212A datasheet, PI5C16212A pinout, PI5C16212A application, or PI5C16212A equivalent, this device supports precise bus isolation, low-power active-state switching (0.1 µA quiescent), and industrial temperature operation (–40°C to +85°C) - critical for portable computing, FPGA I/O expansion, and multi-processor interconnect designs.

Technical Context

The PI5C16212A implements a 3-bit decoded logic controller (S0–S2) that selects one of eight bidirectional data exchange configurations between two independent 12-bit port pairs (A and B). Each channel uses a single-pole double-throw (SPDT) analog switch architecture with CMOS transmission gates.

It operates without internal level-shifting or buffering - signals pass directly through low-R_ON switches (typ. 5 Ω at V_CC = 5 V), preserving edge integrity and minimizing RC-induced delay (≤0.25 ns time constant with 50 pF load). Control inputs are TTL-compatible; A/B pins are passive, currentless signal paths.

Key Specifications

Pinout & Package

PI5C16212A is housed in a 56-pin 240-mil wide thin plastic TSSOP (Package Code A), with 0.5 mm pitch, exposed thermal pad optional, and RoHS-compliant Pb-free/Green variants available (PI5C16212AE).

Key Features

Applications

Equivalent & Alternatives

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

Compared with PI5C16212V and SN74CBT16212DGGR, the PI5C16212A delivers optimal balance of low thermal resistance, ultra-low standby current, and full environmental compliance - making it the preferred choice for space-constrained, thermally sensitive, and battery-dependent applications.

Availability

PI5C16212A is available at Aetrix Electronics and suitable for notebook memory expansion, FPGA I/O multiplexing, and industrial PLC backplane switching requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.

Supply support for PI5C16212A 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; its legacy bus switch portfolio remains widely deployed in industrial and computing platforms.

The PI5C16212A belongs to Pericom's low-R_ON bus exchange switch family, engineered specifically for zero-delay, low-power reconfiguration of parallel digital buses in portable and embedded systems.

FAQ

What is the maximum capacitive load the PI5C16212A can drive without signal degradation?

The PI5C16212A supports up to 50 pF load capacitance per channel while maintaining ≤0.25 ns RC time constant (based on 5 Ω R_ON). Driving heavier loads increases rise/fall time proportionally but does not affect logic levels or cause functional failure - system timing margin must be verified per actual trace and receiver loading.

Can the PI5C16212A operate with mixed-voltage signaling (e.g., 3.3 V inputs on a 5 V supply)?

No - the PI5C16212A requires all A/B signal voltages to remain within –0.5 V to V_CC + 0.5 V (i.e., –0.5 V to +5.5 V for V_CC = 5 V). It does not include level-shifting circuitry; 3.3 V signals are acceptable only if V_CC is set to 3.3 V (not rated for that condition) or if interfaced via external translators.

Is there any power sequencing requirement for V_CC and signal inputs?

Yes - V_CC must be stable before applying signals to A/B pins. The absolute maximum rating specifies that input voltage must not exceed V_CC + 0.5 V. Applying signals prior to V_CC ramp-up may forward-bias ESD protection diodes and cause excessive current or latch-up.

Does the PI5C16212A support hot insertion or live swapping of connected peripherals?

Yes - its rail-to-rail analog switch architecture and 0.1 µA quiescent current enable safe hot-plug operation. However, signal transitions during switching may cause momentary glitches; system firmware must implement handshake protocols or use the S0–S2 control to ensure data validity before and after reconfiguration.