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 PI3B3253QE

Name: PI3B3253QE
Brand: Diodes Incorporated
SKU: PI3B3253QE
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: PI3B3253QE

Manufacturer:: Diodes Incorporated

Category:: Signal Switches, Multiplexers, Decoders

Package:: 16-SSOP (0.154", 3.90mm Width)

Datasheet:: PI3B3253QE.pdf

Description:: IC MUX/DEMUX 2 X 4:1 16QSOP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,966

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

Product details

Overview

PI3B3253QE from Diodes Incorporated is a 3.3V dual 4:1 multiplexer/demultiplexer with 5Ω on-resistance, 5.2ns max bus disable time, and Hi-Z outputs. It operates across –40°C to +85°C, supports rail-to-rail logic inputs up to +3.6V, and is used in notebook I/O signal routing where low propagation delay and ultra-low quiescent current (0.2µA typical) are critical.

For engineers reviewing the PI3B3253QE datasheet, PI3B3253QE pinout, PI3B3253QE application, or PI3B3253QE equivalent, key selection criteria include dual-channel 4:1 switching capability, QSOP-16 package compatibility with legacy 74-series logic, sub-1ns intrinsic propagation delay, and compliance with RoHS 3, halogen-free, and antimony-free environmental requirements.

Technical Context

The PI3B3253QE implements two independent 4:1 analog/digital bus switches controlled by shared S1/S0 select lines and separate EA/EB enables. Each switch path exhibits near-zero propagation delay due to its passive FET architecture - no internal logic gates or buffers - relying solely on R_ON-C_LOAD time constant (0.25ns typ. for 50pF).

It features TTL-compatible control inputs that tolerate voltages up to +3.6V regardless of V_CC, enabling mixed-voltage system interfacing. The device maintains high-impedance outputs when disabled and draws only 0.1–3.0µA quiescent supply current, making it suitable for power-sensitive portable applications.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	3.3V ±10% - ensures stable operation in standard 3.3V digital rails with margin for supply variation
R_ON	5Ω typ. - enables low-loss signal pass-through with minimal voltage drop at ≤48mA channel current
t_PLZ/t_PHZ	5.2ns max - defines maximum time to enter Hi-Z state after enable deassertion, critical for bus arbitration
I_CC	0.2µA typical - reduces standby power in battery-powered systems such as notebooks and tablets
C_IN	3.0pF - limits capacitive loading on driving logic, preserving signal integrity at high frequencies
Operating Temp	–40°C to +85°C - qualifies for industrial and commercial temperature-grade embedded applications
Logic Input Range	–0.5V to +4.6V - allows interfacing with 1.8V, 2.5V, 3.3V, and 5V logic families without level shifters

Pinout & Package

PI3B3253QE is supplied in a 16-pin QSOP (Q) package measuring 3.0mm × 4.4mm with 0.65mm pitch. Pin 1 is marked with a notch or dot; pin numbering follows standard counter-clockwise orientation from top-left corner.

Pin/Terminal	Circuit Role	Design Meaning
1, 15	EA, EB	Active-low enables per channel - assertion enables corresponding 4:1 mux path; both must be low for output drive
3–6, 10–13	IA0–IA3, IB0–IB3	Data inputs - four analog/digital inputs per channel routed to YA/YB based on S1/S0 state
2, 14	S0, S1	Binary select lines - determine which IA/IB input connects to YA/YB (00→IA0/IB0, 01→IA1/IB1, etc.)
7, 9	YA, YB	Switched outputs - present selected input signal when EA/EB active; Hi-Z otherwise
8	GND	Analog/digital ground reference - common return for all signals and power
16	V_CC	Positive supply - powers internal switch FETs and control logic; decoupling required near pin

Key Features

Feature	Design Value
Near-zero propagation delay	0.25ns intrinsic delay - eliminates timing skew in high-speed data routing between processors and peripherals
5Ω analog switch R_ON	Low on-resistance preserves signal amplitude and rise/fall times for 3.3V CMOS/TTL signals
Rail-to-rail logic inputs	Supports 0V to +3.6V input swing - enables direct interface with diverse voltage-domain controllers without external biasing
Ultra-low quiescent current	0.2µA typical ICC - extends battery life in always-on I/O subsystems of portable computing devices
Pin compatibility with 74-series logic	Direct replacement for 74F253/74ALS253 - simplifies legacy design upgrades and BOM rationalization

Applications

Notebook I/O Expansion

Embedded Controller Bus Sharing

Use Scenario: Routing USB, SMBus, or GPIO signals between baseband processor and multiple peripheral ICs in ultrabook platforms.

IC Role / Device Role / Timing Role: Dual 4:1 analog switch managing bidirectional signal paths with sub-5ns disable timing to prevent bus contention.

Use Value: Enables dynamic reconfiguration of shared buses without clock domain crossing or added latency.

Use Scenario: Sharing a single SPI or I²C bus among multiple sensor clusters in industrial HMIs or medical handhelds.

IC Role / Device Role / Timing Role: Signal selector isolating active sensor channels while maintaining Hi-Z on inactive paths to avoid loading.

Use Value: Reduces PCB layer count by eliminating dedicated bus lines per sensor, lowering system cost and complexity.

Test Equipment Signal Multiplexing

Automotive Infotainment Debug Interface

Use Scenario: Switching calibration signals between DUT and measurement instruments in ATE systems with tight timing budgets.

IC Role / Device Role / Timing Role: Low-R_ON analog mux ensuring <1% signal attenuation and <0.3ns jitter contribution at 100MHz.

Use Value: Maintains measurement accuracy and repeatability across multiple test configurations without recalibration.

Use Scenario: Enabling debug access to multiple ECUs (e.g., display, audio, telematics) via a single JTAG/SWD port in vehicle infotainment head units.

IC Role / Device Role / Timing Role: Logic-level multiplexer supporting 3.3V JTAG signaling with fast enable/disable for secure session isolation.

Use Value: Simplifies service diagnostics while meeting automotive ESD immunity and thermal reliability requirements.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual 4:1 analog multiplexer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74CBT3253PWR	Higher R_ON (7Ω typ.), wider V_CC range (2.3–3.6V), no rail-to-rail input tolerance	Limited to 3.3V-only systems; less tolerant of input overshoot during hot-plug events	Select if broader supply flexibility is needed and rail-to-rail input is not required
PI5C3253LEX	5V-tolerant version with identical pinout; higher R_ON (8Ω typ.) and ICC (10µA)	Designed for 5V logic domains; unsuitable for 3.3V-only low-power notebooks	Choose for mixed-voltage systems where 5V control signals coexist with 3.3V data paths

Compared with SN74CBT3253PWR and PI5C3253LEX, PI3B3253QE delivers lower on-resistance, lower quiescent current, and rail-to-rail input compatibility - making it optimal for space-constrained, battery-sensitive 3.3V designs requiring precise signal fidelity and minimal power overhead.

Availability

PI3B3253QE is available at Aetrix Electronics and suitable for notebook I/O expansion, embedded controller bus sharing, test equipment signal multiplexing, and automotive infotainment debug interface applications requiring stable component supply, long-term lifecycle support, and RoHS 3-compliant sourcing.

Supply support for PI3B3253QE 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, industrial, and automotive markets.

The PI3B3253QE belongs to Diodes' NanoSwitch™ product line, engineered for ultra-low-power, high-speed analog/digital signal routing in portable and space-constrained electronics where minimal propagation delay and sub-microamp quiescent current are essential.

FAQ

What is the maximum signal frequency supported by PI3B3253QE?

The PI3B3253QE does not specify a hard bandwidth limit but supports signals up to 100MHz in typical applications. Its 5Ω R_ON and 36pF C_ON yield an RC time constant of ~0.18ns, enabling clean edge transmission for fast digital waveforms. Performance depends on load capacitance and source impedance; for >100MHz use, verify signal integrity with actual board layout and termination.

Can PI3B3253QE operate with 2.5V logic control inputs?

Yes - the logic inputs (S0, S1, EA, EB) accept voltages from –0.5V to +4.6V regardless of V_CC, so 2.5V control signals are fully compatible with the 3.3V V_CC supply. This rail-to-rail input tolerance eliminates need for level shifters when interfacing with lower-voltage controllers or FPGAs.

Does PI3B3253QE support hot-swap or live insertion?

While not formally qualified for hot-swap, the device's overvoltage-tolerant inputs (–0.5V to +4.6V), Hi-Z outputs, and absence of internal latches make it robust against transient conditions during live insertion. However, proper power sequencing - applying V_CC/GND before control/data signals - is recommended to ensure reliable operation and avoid latch-up.

Is PI3B3253QE pin-compatible with the obsolete 74F253?

Yes - PI3B3253QE is explicitly designed as a pinout-compatible replacement for 74F253, 74ALS253, and PI74FCT253T. All control, input, and output pins map identically in QSOP-16, TSSOP-16, and UQFN-16 packages, enabling drop-in upgrades without PCB redesign.

PI3B3253QE Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 16-SSOP (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Active

Type:: Multiplexer/Demultiplexer

Circuit:: 2 x 4:1

Independent Circuits:: 1

Current - Output High, Low:: -

Voltage Supply Source:: Single Supply

Voltage - Supply:: 3V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-QSOP

PI3B3253QE FAQ

1.How can I place an order for PI3B3253QE through Aetrix?

Please submit a Request for Quotation (RFQ) for PI3B3253QE 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 PI3B3253QE reliable?

The price and inventory of PI3B3253QE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI3B3253QE is usually 5 days.

3.What payment methods are accepted for PI3B3253QE?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI3B3253QE transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PI3B3253QE?

PI3B3253QE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PI3B3253QE 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 PI3B3253QE?

For technical support, including PI3B3253QE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI3B3253QE requirements.

6.How does Aetrix verify that PI3B3253QE is sourced from the original manufacturer or authorized distributors?

All PI3B3253QE 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 PI3B3253QE meets industry standards.

7.What is the process for return or replacement of PI3B3253QE?

All PI3B3253QE units undergo pre-shipment inspection (PSI). If there is an issue with PI3B3253QE, 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 PI3B3253QE part is unused and in its original packaging.

Return procedure for PI3B3253QE:

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…