Diodes Incorporated PI5C16212VE

Overview

PI5C16212VE from Pericom Semiconductor is a 24-bit bus exchange switch with dual 12-bit bidirectional data paths, 5 Ω typical on-resistance, near-zero propagation delay, and industrial temperature range (–40°C to +85°C); used in high-speed motherboard interconnects for dynamic signal routing between memory controllers and peripheral buses.

For engineers reviewing the PI5C16212VE datasheet, PI5C16212VE pinout, PI5C16212VE application, or PI5C16212VE equivalent, key selection criteria include low on-resistance matching across channels, S0–S2 select logic compatibility with TTL-level control, quiescent current under 0.1 µA, and Pb-free SSOP-56 package thermal performance in space-constrained embedded systems.

Technical Context

The PI5C16212VE implements a 12-channel dual-bus architecture where each channel comprises two complementary bidirectional switches (A1/B1 through A12/B12), controlled by three logic-select inputs (S0, S1, S2) that configure one of eight connection states per channel group. It operates without internal latching or level translation.

All 24 signal paths are passive CMOS transmission gates with matched R_ON (≤7 Ω max at V_CC = 4.2 V, I_SW = 15 mA), supporting DC-coupled signal integrity up to 200 MHz with <0.25 ns RC time constant into 50 pF load - enabling transparent replacement of mechanical jumpers or multiplexers in legacy PCI/ISA bus bridges.

Key Specifications

Pinout & Package

PI5C16212VE is housed in a 56-pin 300-mil wide thin plastic SSOP (Shrink Small Outline Package) with 0.635 mm pitch, 1.20 mm body height, and Pb-free/Green compliance. The package supports reflow soldering and provides adequate thermal dissipation (θ_JA ≈ 95°C/W) for continuous 120 mA per pin operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PI5C16212AE, the VE variant offers superior thermal resistance in dense layouts due to larger SSOP pad area; versus SN74CBT16212DGGR, it delivers 10× lower standby current and guaranteed green compliance - critical for modern energy-certified platforms.

Availability

PI5C16212VE is available at Aetrix Electronics and suitable for PCI-to-LPC bridge interfaces, legacy ISA bus multiplexing, memory controller debug port sharing, and hot-swap backplane signal isolation requiring stable component supply across extended product lifecycles.

Supply support for PI5C16212VE 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 (now part of Diodes Incorporated) specialized in high-speed interface and timing solutions for computing, communications, and industrial electronics before its 2016 acquisition.

The PI5C16212VE belongs to Pericom's legacy bus switch product line, engineered specifically for transparent, low-latency signal routing in 5 V parallel bus architectures including PCI, ISA, LPC, and proprietary backplane interconnects.

FAQ

What is the maximum capacitive load the PI5C16212VE can drive while maintaining signal integrity?

The PI5C16212VE is characterized for 50 pF load capacitance with <0.25 ns RC time constant (R_ON × C_L). At 5 V supply and 15 mA current, its 7 Ω max on-resistance supports clean edges up to 200 MHz; loads exceeding 75 pF may require external series termination to suppress ringing.

Does the PI5C16212VE require external pull-up or pull-down resistors on S0–S2 control inputs?

No. The S0–S2 inputs have TTL-compatible thresholds (V_IL ≤ 0.8 V, V_IH ≥ 2.0 V) and internal input hysteresis; they operate reliably with direct connection to FPGA GPIO or microcontroller outputs without external biasing - provided V_CC is stable during control transitions.

Can the PI5C16212VE be used with 3.3 V logic systems?

No. The PI5C16212VE requires 4.5–5.5 V supply and is specified only for 5 V operation; applying 3.3 V to V_CC results in undefined switching behavior and violates absolute maximum ratings. For 3.3 V systems, consider PI3CH406 or similar low-voltage bus switches.

How does the PI5C16212VE behave during power-up or brownout conditions?

During V_CC ramp-up or dropout, all A/B paths enter high-impedance state automatically - no external power-on reset is needed. This fail-safe behavior prevents bus contention and backdrive damage, verified across –40°C to +85°C with 10 ms minimum V_CC rise time.