Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Diodes Incorporated PI5C3245Q

Name: PI5C3245Q
Brand: Diodes Incorporated
SKU: PI5C3245Q
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: PI5C3245Q

Manufacturer:: Diodes Incorporated

Category:: Signal Switches, Multiplexers, Decoders

Package:: 20-SSOP (0.154", 3.90mm Width)

Datasheet:: PI5C3245Q.pdf

Description:: IC BUS SWITCH 8 X 1:1 20QSOP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:4,169

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

PI5C3245Q from Diodes Incorporated is an 8-bit, 2-port bus switch with 5Ω on-resistance, active-low bus enable control, and ultra-low quiescent current (0.2μA typical), designed for bidirectional signal routing in notebook and portable computing systems.

For engineers reviewing the PI5C3245Q datasheet, PI5C3245Q pinout, PI5C3245Q application, or PI5C3245Q equivalent, key selection criteria include propagation delay (<0.25 ns), bus disable time (1.5–5.5 ns), TSSOP/QSOP package compatibility, and pin alignment with 74FCT245 logic devices.

Technical Context

The PI5C3245Q implements a passive FET-based bus switch architecture-no internal logic or level-shifting-enabling direct analog-like signal pass-through between A and B ports when enabled. Its BE input controls all eight switches simultaneously with hysteresis (150 mV) for noise immunity.

Switching behavior is governed solely by R_ON (5–15 Ω depending on voltage/current) and parasitic capacitance (C_ON = 8 pF, C_OFF = 6 pF), resulting in near-zero added propagation delay and no ground bounce generation during switching transitions.

Key Specifications

Parameter	Value and Actual Design Meaning
On-Resistance	5 Ω typical at VCC min, 0 V input - ensures minimal signal attenuation and voltage drop across A/B paths
Propagation Delay	<0.25 ns - contributes negligible timing skew in high-speed data buses
Quiescent Current	0.2 μA typical - enables battery-sensitive applications like notebooks and tablets
Bus Disable Time	1.5–5.5 ns - defines minimum hold time before output enters high-impedance state after BE deassertion
Input Hysteresis	150 mV - improves noise margin on BE control line in electrically noisy environments
Supply Voltage Range	4.5–5.5 V - compatible with standard 5 V TTL/CMOS logic rails
Operating Temperature	–40°C to +85°C - supports industrial and commercial embedded deployment

Pinout & Package

PI5C3245Q is housed in a 20-pin 150-mil wide plastic QSOP (Q20) package, RoHS-compliant and halogen-free per Diodes Incorporated's "Green" definition.

Pin/Terminal	Circuit Role	Design Meaning
BE	Bus Enable Input	Active-low global control: drives all 8 switches ON (low) or OFF (high)
A0–A7	Port A Data Inputs/Outputs	Bi-directional I/O pins connected directly to B0–B7 when BE = LOW
B0–B7	Port B Data Inputs/Outputs	Bi-directional I/O pins connected directly to A0–A7 when BE = LOW
VCC	Power Supply	5 V supply rail; powers internal control circuitry only (no current through A/B paths)
GND	Ground Reference	Common return path for control logic and substrate reference

Key Features

Feature	Design Value
Zero-propagation-delay switching	No active logic or buffering - signal passes through R_ON/C_ON RC network only
Direct bus connection	A and B ports electrically shorted when enabled - preserves signal integrity without level translation
PIN-compatible with 74 Series 245	Matches pinout of PI74FCT245T - enables drop-in replacement in legacy designs
Ultra-low quiescent power	0.2 μA typical ICC - reduces standby power in always-on system partitions
Lead-free & Green packaging	Meets RoHS 3 and halogen/antimony thresholds (<900 ppm Br/Cl, <1000 ppm Sb)

Applications

High-Speed Notebook Memory Bus Isolation

PCI Express Gen 1 Signal Multiplexing

Use Scenario: Isolating DDR memory channels during sleep mode to prevent leakage and maintain data retention.

IC Role / Device Role / Timing Role: Bidirectional bus switch enabling/disabling memory data paths under OS-controlled BE signal.

Use Value: 0.2 μA quiescent current minimizes battery drain; 5 Ω R_ON avoids signal distortion on 333 MHz DDR lines.

Use Scenario: Sharing PCIe reference clock or sideband signals (e.g., PERST#, CLKREQ#) between multiple controllers.

IC Role / Device Role / Timing Role: Low-capacitance (6 pF COFF), low-R_ON switch routing control signals without adding jitter or skew.

Use Value: 0.25 ns propagation delay and 6 pF off-capacitance preserve signal edge integrity for 100 MHz PCIe clocks.

USB 2.0 Data Line Switching

Industrial PLC I/O Expansion Backplane

Use Scenario: Dynamically routing USB D+/D− lines between host controller and multiple peripheral ports.

IC Role / Device Role / Timing Role: Bidirectional analog switch supporting full-speed (12 Mbps) signaling with minimal rise-time degradation.

Use Value: 8 pF C_ON and 5 Ω R_ON maintain USB eye diagram compliance; BE-controlled isolation prevents bus contention.

Use Scenario: Enabling/disabling modular I/O modules on a backplane to support hot-swap and configuration flexibility.

IC Role / Device Role / Timing Role: Logic-level controlled bus gate isolating digital I/O lines between CPU and expansion slots.

Use Value: –40°C to +85°C operation ensures reliability in factory-floor environments; pin compatibility simplifies board redesign.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit bus switch applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
PI74FCT245T	Active-buffered transceiver with 3-state outputs, higher drive strength (24 mA), and propagation delay ~5 ns	Requires separate direction control (DIR); not suitable for zero-delay analog pass-through	Select when level-shifting or driving heavy loads is required; avoid when minimal delay and low power are critical
SN74CBT3245APW	TI part with identical 5 Ω R_ON, same QSOP-20 package, but higher ICC (10 μA typical) and no hysteresis on BE	Compatible pinout and function, but less noise-immune BE input and higher standby current	Acceptable for cost-sensitive designs where 0.2 μA quiescent current is not mandatory

Compared with PI74FCT245T and SN74CBT3245APW, the PI5C3245Q uniquely delivers sub-0.25 ns delay, 0.2 μA quiescent current, and BE hysteresis-making it optimal for battery-powered, timing-critical bus isolation where signal fidelity and power efficiency are jointly constrained.

Availability

PI5C3245Q is available at Aetrix Electronics and suitable for high-speed notebook memory bus isolation, PCIe sideband signal multiplexing, USB 2.0 data line switching, and industrial PLC I/O expansion requiring stable component supply and long-term lifecycle support.

Supply support for PI5C3245Q 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, energy-efficient solutions for consumer, computing, industrial, and automotive markets.

The PI5C3245 belongs to Diodes' high-speed logic and interface product line, engineered specifically for low-latency, low-power bus switching in portable and space-constrained embedded systems.

FAQ

What is the maximum capacitive load the PI5C3245Q can drive while maintaining signal integrity?

The PI5C3245Q is characterized for CL = 50 pF in switching tests, with propagation delay remaining below 0.25 ns. Its 5 Ω R_ON and 8 pF C_ON form an RC time constant (~0.04 ns), ensuring clean edges up to ~500 MHz. For loads exceeding 50 pF, rise/fall times increase linearly with capacitance, but no degradation in logic levels occurs due to its passive switch architecture.

Can the PI5C3245Q operate at 3.3 V supply?

No. The PI5C3245Q is specified only for VCC = 4.5 V to 5.5 V. Its internal control circuitry and R_ON performance are optimized for 5 V operation. At 3.3 V, BE threshold and R_ON degrade significantly - VIH is guaranteed only at ≥2.0 V, and R_ON rises above 15 Ω - making it unsuitable for reliable 3.3 V systems.

Is the PI5C3245Q pin-compatible with both TSSOP and QSOP packages?

Yes - the PI5C3245L (TSSOP-20) and PI5C3245Q (QSOP-20) share identical pin numbering and signal mapping. Both packages maintain 1:1 pin correspondence with PI74FCT245T, allowing PCB layout reuse across package variants. Mechanical dimensions differ (173-mil vs. 150-mil width), but footprint pad layouts are interchangeable with minor trace adjustments.

Does the PI5C3245Q support hot-swap or live-insertion?

Yes - the device features undervoltage lockout and robust ESD protection (per JESD22-A114, >2 kV HBM). Its 5 V tolerant inputs (–0.5 V to 7 V) and absence of power-on sequencing requirements allow safe insertion into powered backplanes. However, BE must be held HIGH (disabled) during insertion to prevent transient bus contention on A/B ports.

PI5C3245Q Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 20-SSOP (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Obsolete

Type:: Bus Switch

Circuit:: 8 x 1:1

Independent Circuits:: 1

Current - Output High, Low:: -

Voltage Supply Source:: Single Supply

Voltage - Supply:: 4.75V ~ 5.25V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 20-QSOP

PI5C3245Q FAQ

1.How can I place an order for PI5C3245Q through Aetrix?

Please submit a Request for Quotation (RFQ) for PI5C3245Q 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 PI5C3245Q reliable?

The price and inventory of PI5C3245Q are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI5C3245Q is usually 5 days.

3.What payment methods are accepted for PI5C3245Q?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI5C3245Q transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PI5C3245Q?

PI5C3245Q orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PI5C3245Q 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 PI5C3245Q?

For technical support, including PI5C3245Q datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI5C3245Q requirements.

6.How does Aetrix verify that PI5C3245Q is sourced from the original manufacturer or authorized distributors?

All PI5C3245Q 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 PI5C3245Q meets industry standards.

7.What is the process for return or replacement of PI5C3245Q?

All PI5C3245Q units undergo pre-shipment inspection (PSI). If there is an issue with PI5C3245Q, 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 PI5C3245Q part is unused and in its original packaging.

Return procedure for PI5C3245Q:

1.Submit a request within 90 days.

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

Tech Hub

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…