Diodes Incorporated PI5C16211A

Overview

PI5C16211A from Pericom Semiconductor is a 24-bit CMOS bus switch IC with dual 12-bit independent channels, 5 Ω typical on-resistance at 4.5 V, <0.25 ns propagation delay, and ultra-low quiescent current (0.2 µA). It functions as a bidirectional, voltage-transparent signal path in high-speed data buses for notebook and industrial embedded systems.

For engineers reviewing the PI5C16211A datasheet, PI5C16211A pinout, PI5C16211A application, or PI5C16211A equivalent, key selection criteria include channel independence (dual 12-bit enable control), low R_ON stability across V_CC = 4.0–5.5 V, industrial temperature range (–40°C to +85°C), and TSSOP-56 package compatibility with high-density PCB layouts.

Technical Context

The PI5C16211A implements two independent 12-bit analog bus switches controlled by separate OE inputs (1OE and 2OE), enabling selective routing without signal inversion or level translation. Each channel supports bidirectional, rail-to-rail signal pass-through with no internal logic or latching.

Its switch architecture uses NMOS-only transmission gates with gate drive referenced to V_CC, ensuring minimal voltage drop (<100 mV at 15 mA) and near-zero added propagation delay-limited only by R_ON·C_L time constant (e.g., ~0.25 ns for 50 pF load).

Key Specifications

Pinout & Package

PI5C16211A is housed in a 56-pin, 240-mil wide thin plastic TSSOP (Package Code A), 0.5 mm pitch, with exposed pad not present and RoHS-compliant Pb-free/Green option available (PI5C16211AE).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74CBT16212DGGR and 74LVC1G66GW,125, the PI5C16211A delivers superior R_ON performance in a compact TSSOP-56, enabling higher current drive and lower signal distortion in dense, thermally constrained systems-making it optimal for notebook and industrial edge devices requiring integrated 24-bit switching.

Availability

PI5C16211A is available at Aetrix Electronics and suitable for notebook expansion interfaces, industrial PLC backplanes, automotive infotainment debug ports, and medical imaging data multiplexers requiring stable component supply and long-lifecycle support.

Supply support for PI5C16211A 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 and timing solutions, acquired by Diodes Incorporated in 2016; its legacy bus switch portfolio remains actively supported and qualified.

The PI5C16211A belongs to Pericom's PI5C series of low-R_ON CMOS bus switches, designed specifically for zero-delay, bidirectional signal routing in space-constrained, power-sensitive 5 V digital systems.

FAQ

What is the maximum continuous current per switch channel?

The PI5C16211A supports up to 120 mA DC output current per A/B pin pair, verified per Absolute Maximum Ratings. At 64 mA, R_ON remains ≤7 Ω (V_CC = 4.5 V), ensuring <450 mV total voltage drop across the switch-well within 5 V logic high/low margin requirements.

Can PI5C16211A operate with 3.3 V logic levels?

No. The PI5C16211A requires V_CC = 4.0–5.5 V and is not specified for 3.3 V operation. Its control inputs (1OE/2OE) have VIH = 2.0 V min, but internal switch threshold and R_ON performance are characterized only at ≥4.0 V supply; using 3.3 V risks excessive R_ON and timing violations.

Are the A and B pins interchangeable in layout?

Yes. Each A/B pair (e.g., 1A1 and 1B1) is functionally symmetric-either pin may serve as input or output depending on signal flow direction. No internal biasing or directionality exists; layout routing may assign either side to source or sink based on PCB signal topology.

Does PI5C16211A require external pull-up or pull-down resistors on OE pins?

No. The OE inputs are CMOS-compatible with rail-to-rail logic thresholds (VIH = 2.0 V, VIL = 0.8 V). When driven directly from 5 V microcontrollers or FPGAs, no external biasing is needed. Floating OE pins default to high-impedance, placing both channels in high-Z state-safe for unpowered operation.