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 PI5C3257SE

Name: PI5C3257SE
Brand: Diodes Incorporated
SKU: PI5C3257SE
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: PI5C3257SE

Manufacturer:: Diodes Incorporated

Category:: Signal Switches, Multiplexers, Decoders

Package:: 16-SOIC (0.295", 7.50mm Width)

Datasheet:: PI5C3257SE.pdf

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

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:1,047

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

Product details

Overview

PI5C3257SE from Pericom Semiconductor is a quad 2:1 analog multiplexer/demultiplexer with three-state outputs, designed for high-speed bus switching in 5V logic systems. It features 5Ω on-resistance, near-zero propagation delay (0.25ns), ultra-low quiescent current (0.2µA typical), and pin compatibility with 74F257/74ALS257. It is used in notebook PC memory/data bus isolation and hot-swap I/O routing.

For engineers reviewing the PI5C3257SE datasheet, PI5C3257SE pinout, PI5C3257SE application, or PI5C3257SE equivalent, key selection criteria include on-resistance matching, enable-select timing (tPZH/tPLZ ≤ 4.8ns), bus disable speed (tPHZ/tPLZ ≤ 5.0ns), and Pb-free SOIC-16 packaging compliance for industrial embedded designs.

Technical Context

The PI5C3257SE implements four independent bidirectional analog switches controlled by a shared enable (E) and select (S) input. Each switch operates as a low-impedance pass gate (RON = 5Ω typ.) with no internal logic buffering-signal integrity relies solely on external drive strength and load capacitance.

Its architecture eliminates ground bounce and propagation delay beyond RC time constant (≤0.25ns for 50pF load), enabling transparent data path switching in high-speed parallel buses. Control inputs accept TTL-compatible thresholds (VIH ≥ 2.0V, VIL ≤ 0.8V) and exhibit 150mV hysteresis to suppress noise-induced toggling.

Key Specifications

Parameter	Value and Actual Design Meaning
On-Resistance	5Ω typical - enables minimal voltage drop (<240mV at 48mA) across switched data lines
Propagation Delay (In→Yn)	0.25ns max - preserves signal edge fidelity in >1GHz digital bus environments
Quiescent Current	0.2µA typical - supports battery-backed operation in portable systems
Supply Voltage Range	–0.5V to +7.0V - allows safe interfacing with 3.3V/5V mixed-voltage buses
Input Capacitance	6pF - minimizes loading on driving source, critical for high-frequency clock/data lines
Switch Off Capacitance	6pF - ensures <–40dB crosstalk isolation between inactive channels
Ambient Temp Range	–40°C to +85°C - qualified for industrial-grade embedded control and computing applications

Pinout & Package

PI5C3257SE is supplied in a 16-pin 300-mil wide plastic SOIC (SOIC-16) package with Pb-free & Green compliance.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 5, 6, 8, 10, 11, 13, 14, 15, 16	Data I/O (IAn, IBn, Yn)	Bidirectional analog signal paths; each pair (e.g., IA0/YA) forms one 2:1 mux channel
4, 7, 9, 12	Output Enable (E) / Select (S)	E active-low globally enables/disables all four switches; S selects IA/IB input per channel
16	VCC	5V power supply pin; decoupling required within 1cm for stable low-noise switching
8	GND	Signal reference plane; must be connected to system ground with low-inductance path

Key Features

Feature	Design Value
Direct bus connection when ON	Eliminates logic-level translation overhead and preserves signal slew rate integrity
Ultra-low quiescent power	0.2µA typical ICC enables always-on bus isolation without thermal derating in compact enclosures
Pb-free & Green SOIC packaging	Meets RoHS 2011/65/EU and JEDEC J-STD-020 reflow profile for lead-free assembly
Pin compatibility with 74-series logic	Enables drop-in replacement of legacy 74F257/74ALS257 without PCB redesign
No ground bounce during switching	Internal charge-balanced switch design prevents transient current spikes into GND plane

Applications

Memory Bus Isolation

Notebook PC I/O Expansion

Use Scenario: Isolating DDR SDRAM address/control lines between CPU and memory controller during sleep mode.

IC Role / Device Role / Timing Role: Quad 2:1 mux acts as bidirectional bus gate, enabling/disabling memory access under OS power management control.

Use Value: 5Ω RON ensures <1% signal attenuation at 200MHz; 0.2µA ICC extends battery life during suspend-to-RAM states.

Use Scenario: Routing USB 2.0 D+/D− and PCIe Gen1 lanes between baseband processor and expansion card slot.

IC Role / Device Role / Timing Role: Analog switch provides hot-plug-safe signal path isolation with sub-nanosecond timing transparency.

Use Value: 0.25ns tIY preserves eye diagram integrity; 6pF CIN avoids signal rise-time degradation on 480Mbps links.

Industrial PLC Backplane Switching

Test Equipment Signal Multiplexing

Use Scenario: Dynamically assigning sensor analog inputs (0–5V) to shared ADC channel in modular I/O rack.

IC Role / Device Role / Timing Role: Four independent 2:1 analog muxes route field signals while maintaining channel-to-channel isolation >60dB.

Use Value: 6pF COFF limits crosstalk; ±0.5V to +7.0V absolute max rating accommodates transient overvoltage on industrial wiring.

Use Scenario: Sharing oscilloscope front-end amplifier among 4 differential probe inputs in automated test fixture.

IC Role / Device Role / Timing Role: Low-capacitance analog switch enables fast channel switching (<5ns enable/disable) without settling artifacts.

Use Value: tPZH/tPLZ ≤ 4.8ns ensures <1% timing skew across channels; 5Ω RON maintains gain accuracy to ±0.1%.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad 2:1 analog multiplexer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74CBT3257DR	RON = 6Ω typ., tIY = 0.2ns, ICC = 1µA typ., same SOIC-16 footprint	Higher drive capability (120mA vs. 48mA), but higher quiescent current reduces battery runtime	Select for higher-current bus loads where power budget permits
74LVC1G3157GW	Single-channel, SC-70-6 package, RON = 10Ω, VCC = 1.65–5.5V	Not pin-compatible; requires 4x devices and PCB layout change for quad function	Select only when space-constrained designs prioritize footprint over integration

Compared with SN74CBT3257DR and 74LVC1G3157GW, PI5C3257SE offers optimal balance of ultra-low standby power (0.2µA), industry-standard SOIC-16 pinout, and proven 5Ω RON performance for legacy 5V bus architectures requiring direct replacement.

Availability

PI5C3257SE is available at Aetrix Electronics and suitable for memory bus isolation, notebook PC I/O expansion, industrial PLC backplane switching, and test equipment signal multiplexing requiring stable component supply and long-term lifecycle support.

Supply support for PI5C3257SE 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 of high-speed interface and timing solutions, acquired by Diodes Incorporated in 2016; its legacy portfolio remains widely deployed in industrial and computing infrastructure.

The PI5Cxx BusSwitch family targets low-latency, low-power analog signal routing in 5V logic systems-designed specifically for transparent bus gating without added propagation delay or ground bounce.

FAQ

What is the maximum continuous current rating per switch channel?

The PI5C3257SE supports up to 48mA DC current per switch channel under specified conditions (VCC = min, VIN = 0V). This is derived from the RON = 5Ω specification and maximum allowable voltage drop. Exceeding this current may cause thermal stress or deviation from guaranteed on-resistance performance.

Can PI5C3257SE operate with 3.3V logic levels on control inputs?

Yes-the control inputs (E and S) meet TTL-compatible thresholds: VIH ≥ 2.0V and VIL ≤ 0.8V, making them fully compatible with 3.3V CMOS/TTL drivers. However, the device must be powered at VCC = 5V ±5% to maintain specified RON and timing performance.

Is there any built-in ESD protection on the I/O pins?

The PI5C3257SE includes internal clamp diodes (VIK = –0.7V to –1.2V) referenced to VCC and GND, providing basic ESD robustness per human-body model (HBM). External TVS devices are recommended for industrial environments exceeding ±2kV HBM or with cable-connected I/O.

Does the PI5C3257SE require external pull-up or pull-down resistors on control pins?

No-control inputs have negligible leakage (±1µA IIH/IIL), and internal hysteresis (150mV) ensures noise immunity. Pull resistors are unnecessary unless system-level noise exceeds 150mV peak-to-peak on E or S lines, in which case a 10kΩ pull-down on E is recommended for default-disabled state.

PI5C3257SE Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 16-SOIC (0.295", 7.50mm Width)

Packaging:: Tube

Product Status:: Obsolete

Type:: Multiplexer/Demultiplexer

Circuit:: 4 x 2:1

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:: 16-SOIC

PI5C3257SE FAQ

1.How can I place an order for PI5C3257SE through Aetrix?

Please submit a Request for Quotation (RFQ) for PI5C3257SE 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 PI5C3257SE reliable?

The price and inventory of PI5C3257SE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI5C3257SE is usually 5 days.

3.What payment methods are accepted for PI5C3257SE?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI5C3257SE transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PI5C3257SE?

PI5C3257SE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PI5C3257SE 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 PI5C3257SE?

For technical support, including PI5C3257SE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI5C3257SE requirements.

6.How does Aetrix verify that PI5C3257SE is sourced from the original manufacturer or authorized distributors?

All PI5C3257SE 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 PI5C3257SE meets industry standards.

7.What is the process for return or replacement of PI5C3257SE?

All PI5C3257SE units undergo pre-shipment inspection (PSI). If there is an issue with PI5C3257SE, 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 PI5C3257SE part is unused and in its original packaging.

Return procedure for PI5C3257SE:

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…