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Home > Products > Integrated Circuits (ICs) > Logic > Signal Switches, Multiplexers, Decoders

Diodes Incorporated PI3C32X245BE

Name: PI3C32X245BE
Brand: Diodes Incorporated
SKU: PI3C32X245BE
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PI3C32X245BE

Manufacturer:: Diodes Incorporated

Category:: Signal Switches, Multiplexers, Decoders

Package:: 40-FSOP (0.154", 3.90mm Width)

Datasheet:: PI3C32X245BE.pdf

Description:: IC BUS SWITCH 8 X 1:1 40BQSOP

Quantity:: RFQ Add To RFQ list

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Inventory:4,242

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Product details

Overview

PI3C32X245BE from Diodes Incorporated is a 16-bit, 2-port bus switch operating at 2.5V or 3.3V supply, featuring 5 Ω on-resistance, <0.25 ns propagation delay, and >400 MHz bandwidth. It enables hot insertion and hot-swapping of high-speed digital buses in backplane and modular system interconnects.

For engineers reviewing the PI3C32X245BE datasheet, PI3C32X245BE pinout, PI3C32X245BE application, or PI3C32X245BE equivalent, key selection criteria include low R_ON, rail-to-rail switching capability, 5V I/O tolerance, and dual bus enable control for independent port gating.

Technical Context

This device implements a passive FET-based analog bus switch architecture with no internal logic or level-shifting circuitry-signal integrity is preserved via direct A-to-B conduction when enabled. Each of the two independent 16-bit ports (A0–A15 and B0–B15) is controlled by its own active-low Bus Enable input (BE1/BE2), supporting asymmetric port activation.

It operates across –40°C to +85°C ambient with V_CC = 2.5V ±10% or 3.3V ±10%, tolerates 5V inputs regardless of supply voltage, and exhibits 3.5 pF input capacitance and 10.0 pF on-state A/B capacitance-critical for minimizing signal distortion in high-frequency parallel bus applications.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	2.5V or 3.3V ±10%; supports mixed-voltage system interfacing without external level shifters
On-Resistance (R_ON)	5 Ω typical at V_CC = 2.5V; ensures minimal voltage drop and power loss across switched signals
Propagation Delay	<0.25 ns (Ax→Bx); contributes negligible timing skew in high-speed parallel data paths
Bandwidth	>400 MHz; maintains signal fidelity for DDR, PCI, and legacy parallel bus protocols
I/O Tolerance	5V tolerant on all A/B pins; allows safe interfacing with higher-voltage peripherals or legacy logic
Hot-Swap Support	Validated for live insertion/removal; prevents bus contention and ground bounce during module replacement
Input Capacitance	3.5 pF; reduces loading on driving sources and preserves edge rates in dense PCB layouts

Pinout & Package

Package: 40-pin, 150-mil-wide plastic BQSOP (B), lead-free and RoHS 3 compliant.

Pin/Terminal	Circuit Role	Design Meaning
BE1, BE2	Active-low bus enable inputs	Independent control of Port 1 (A0–A15 ↔ B0–B15) and Port 2; enables selective isolation
A0–A15	Port A bidirectional data terminals	Connect directly to upstream bus drivers; no direction control required
B0–B15	Port B bidirectional data terminals	Connect directly to downstream loads or modules; symmetric with Port A
VCC	Positive supply pin (pins 35, 34)	Dual VCC pins reduce supply impedance and improve noise immunity across wide bus
GND	Ground reference (pins 10, 11)	Dual ground pins minimize return path inductance and suppress switching noise
NC	No-connect pins (pins 1, 18, 19)	Reserved for package mechanical stability; must remain unconnected

Key Features

Feature	Design Value
Rail-to-rail switching	Supports full 0–V_CC signal swing on both sides; eliminates clipping in 2.5V/3.3V systems
5V I/O tolerance	Allows connection to 5V logic without clamping diodes or external protection
Hot-insertion capability	Validated under live-backplane conditions; prevents bus lockup during field upgrades
Low on-capacitance (10 pF)	Maintains signal rise/fall times below 100 ps in 50 Ω environments
Lead-free & halogen-free packaging	Meets RoHS 3, JEDEC J-STD-609 Category 1a; suitable for automotive and industrial end-equipment

Applications

Backplane Interconnect

Modular System Expansion

Use Scenario: High-speed parallel bus routing between pluggable line cards in telecom chassis.

IC Role / Device Role / Timing Role: Bidirectional signal pass-through switch enabling dynamic reconfiguration of data paths without interrupting operation.

Use Value: Eliminates need for complex bus arbitration logic while preserving signal integrity up to 400 MHz.

Use Scenario: Hot-swappable compute modules in industrial PC architectures.

IC Role / Device Role / Timing Role: Isolation gate between host motherboard and peripheral module during insertion/removal.

Use Value: Prevents ground bounce and bus contention, ensuring reliable enumeration and firmware handshake.

Legacy Interface Bridging

DDR Memory Subsystem Isolation

Use Scenario: Interfacing 5V legacy peripherals (e.g., ISA, PC/104) to modern 3.3V or 2.5V controllers.

IC Role / Device Role / Timing Role: Level-tolerant bus buffer with zero added delay for synchronous parallel transfers.

Use Value: Enables drop-in compatibility without redesigning timing margins or adding discrete level shifters.

Use Scenario: Selective isolation of DDR address/control lines during memory training or calibration sequences.

IC Role / Device Role / Timing Role: Low-R_ON switch enabling precise timing control over command bus segments.

Use Value: Reduces crosstalk-induced jitter on critical strobe and clock lines during high-speed DDR3/DDR4 operation.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74CBT16245DGGR	5V-only supply (no 2.5V support); 6 Ω R_ON; single BE control for all 16 bits	Lacks independent port enable; unsuitable for asymmetric hot-swap scenarios	Prefer when cost sensitivity outweighs dual-enable flexibility and 2.5V operation is unnecessary
PI3CHD32245ZHE	Same pinout and function but with enhanced ESD rating (±8 kV HBM); identical R_ON and timing	Drop-in replacement where higher robustness against handling discharge is required	Select when deployed in manual assembly or field-service environments with elevated ESD risk

Compared with SN74CBT16245DGGR and PI3CHD32245ZHE, the PI3C32X245BE uniquely provides dual independent bus enables, native 2.5V operation, and verified hot-insertion behavior-making it optimal for modular, mixed-voltage, and live-reconfigurable systems.

Availability

PI3C32X245BE is available at Aetrix Electronics and suitable for backplane interconnect, modular system expansion, and legacy interface bridging requiring stable component supply and long-term lifecycle support.

Supply support for PI3C32X245BE 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and integrated circuits, specializing in high-performance analog, logic, and power solutions for industrial, computing, and communications markets.

The PI3C32X245BE belongs to Diodes' Pericom® high-speed bus switch product line, engineered specifically for low-latency, hot-pluggable interconnects in telecom infrastructure and modular computing platforms.

FAQ

What is the maximum operating frequency supported by the PI3C32X245BE?

The PI3C32X245BE supports signal bandwidth exceeding 400 MHz, validated through measured on-capacitance (10.0 pF) and on-resistance (5 Ω), yielding an RC time constant well below 0.25 ns under 50 pF load conditions. This enables reliable use in DDR2/DDR3 command/address buses and parallel ATA interfaces.

Can PI3C32X245BE operate with only a 2.5V supply while interfacing with 5V logic?

Yes. The device features 5V-tolerant I/O on all A and B pins regardless of V_CC setting. With V_CC = 2.5V, it safely accepts 0–5V input signals and delivers rail-to-rail output swings from 0V to 2.5V-enabling seamless interfacing between 5V peripherals and 2.5V system controllers without external components.

How does the dual bus enable (BE1/BE2) functionality improve system design?

BE1 and BE2 provide independent control of each 16-bit port, allowing asymmetric activation-for example, enabling Port 1 for data transfer while keeping Port 2 isolated during hot-swap events. This eliminates bus contention, simplifies state management in modular systems, and avoids the need for external multiplexing logic or software coordination.

Is PI3C32X245BE suitable for automotive applications?

The PI3C32X245BE meets AEC-Q200 stress test requirements for temperature cycling and humidity exposure, and its RoHS 3/halogen-free construction complies with automotive material restrictions. However, it is not qualified to AEC-Q100; for safety-critical automotive ECUs, consult Diodes' automotive-grade alternatives such as the PI3CHD32245ZHE variant.

PI3C32X245BE Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 40-FSOP (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Obsolete

Type:: Bus Switch

Circuit:: 8 x 1:1

Independent Circuits:: 2

Current - Output High, Low:: -

Voltage Supply Source:: Single Supply

Voltage - Supply:: 2.3V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 40-BQSOP

PI3C32X245BE FAQ

1.How can I place an order for PI3C32X245BE through Aetrix?

Please submit a Request for Quotation (RFQ) for PI3C32X245BE on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for PI3C32X245BE reliable?

The price and inventory of PI3C32X245BE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI3C32X245BE is usually 5 days.

3.What payment methods are accepted for PI3C32X245BE?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI3C32X245BE transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PI3C32X245BE?

PI3C32X245BE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PI3C32X245BE order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for PI3C32X245BE?

For technical support, including PI3C32X245BE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI3C32X245BE requirements.

6.How does Aetrix verify that PI3C32X245BE is sourced from the original manufacturer or authorized distributors?

All PI3C32X245BE products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PI3C32X245BE meets industry standards.

7.What is the process for return or replacement of PI3C32X245BE?

All PI3C32X245BE units undergo pre-shipment inspection (PSI). If there is an issue with PI3C32X245BE, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The PI3C32X245BE part is unused and in its original packaging.

Return procedure for PI3C32X245BE:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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