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

Diodes Incorporated PI3B3253LE-2017

Name: PI3B3253LE-2017
Brand: Diodes Incorporated
SKU: PI3B3253LE-2017
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PI3B3253LE-2017

Manufacturer:: Diodes Incorporated

Category:: Signal Switches, Multiplexers, Decoders

Package:: 16-TSSOP (0.173", 4.40mm Width)

Datasheet:: PI3B3253LE-2017.pdf

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

Quantity:: RFQ Add To RFQ list

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Product details

Overview

PI3B3253LE-2017 from Diodes Incorporated is a 3.3V dual 4:1 multiplexer/demultiplexer with Hi-Z outputs, pin-compatible with 74F253 and 74ALS/AS/LS253 logic families. It features 5Ω on-resistance, 5.2ns max switching time, 0.2µA typical quiescent current, and operates across –40°C to +85°C for notebook and portable computing signal routing.

For engineers reviewing the PI3B3253LE-2017 datasheet, PI3B3253LE-2017 pinout, PI3B3253LE-2017 application, or PI3B3253LE-2017 equivalent, key selection criteria include low propagation delay (0.25ns typ.), rail-to-rail logic input tolerance up to +3.6V, dual independent channel control via S0/S1 and EA/EB, and TSSOP-16 packaging for high-density PCB layouts.

Technical Context

The PI3B3253LE-2017 implements two independent 4:1 analog/digital bus switches using CMOS transmission-gate architecture. Each channel selects one of four inputs (IA0–IA3 or IB0–IB3) to its output (YA or YB) under dual 2-bit select (S0/S1) and enable (EA/EB) control, with no internal latching or buffering.

All logic inputs tolerate voltages up to +3.6V regardless of VCC = 3.3V ±10%, enabling mixed-voltage interfacing. The device exhibits near-zero propagation delay due to passive switch topology - delay arises solely from R_ON–C_LOAD time constant (0.25ns for 50pF), not active circuitry.

Key Specifications

Parameter	Value and Actual Design Meaning
VCC Supply	3.3V ±10% - defines operating voltage window compatible with modern low-voltage I/O standards
R_ON	5Ω typ. at VCC min, 0V input - ensures minimal signal attenuation and impedance matching for 50Ω systems
t_IY	0.25ns typ. propagation delay - enables high-speed data path switching without timing budget impact
ICC	0.1µA min, 3.0µA max quiescent current - supports ultra-low-power operation in battery-powered notebooks
C_IN	3.0pF input capacitance - minimizes loading on driving logic and preserves signal edge integrity
Logic Input Range	–0.5V to +3.6V - allows direct interface with 1.8V, 2.5V, and 3.3V controllers without level shifters
Operating Temp	–40°C to +85°C ambient - qualified for industrial and extended commercial environments

Pinout & Package

PI3B3253LE-2017 is packaged in a 16-pin TSSOP (L) with 173mil body width, 0.65mm pitch, and exposed pad for thermal performance. Pin 1 is marked by notch or dot; pin numbering follows standard counterclockwise convention.

Pin/Terminal	Circuit Role	Design Meaning
1, 15	EA, EB	Active-low enable inputs per channel - disable both paths to Hi-Z when asserted high
3–6, 10–13	IA0–IA3, IB0–IB3	Four analog/digital inputs per channel - support bidirectional signal routing with no polarity restriction
2, 14	S0, S1	2-bit binary select lines - determine which IA/IB input connects to YA/YB (00→IA0/IB0, 11→IA3/IB3)
7, 9	YA, YB	Channel outputs - present selected input with <5Ω on-resistance and Hi-Z state when disabled
8	GND	Ground reference - must be connected to system ground plane for noise immunity and R_ON stability
16	VCC	3.3V power supply - requires local 0.1µF ceramic decoupling adjacent to pin for transient suppression

Key Features

Feature	Design Value
Near-zero propagation delay	0.25ns typical - eliminates timing skew in high-speed data multiplexing between processors and peripherals
5Ω on-resistance	Ensures <1% signal loss at 50Ω load - critical for preserving eye diagram integrity in USB 2.0 and PCIe Gen1 paths
Ultra-low quiescent power	0.2µA typical ICC - extends battery life in always-on notebook subsystems such as keyboard controllers or sensor hubs
Rail-to-rail logic inputs	Accept –0.5V to +3.6V regardless of VCC - simplifies interconnection with mixed-voltage SoCs and FPGAs
Hi-Z output state	True three-state behavior when EA/EB high - prevents bus contention during hot-swap or dynamic reconfiguration

Applications

USB 2.0 Data Switching

Notebook Display Multiplexing

Use Scenario: Routing USB D+/D– signals between two host controllers and a single downstream port in dual-mode laptops.

IC Role / Device Role / Timing Role: Dual-channel analog switch providing bidirectional, low-capacitance path selection without signal inversion or delay accumulation.

Use Value: Enables seamless USB host role switching with <0.25ns added delay and <3pF input capacitance to maintain signal integrity up to 480Mbps.

Use Scenario: Selecting between integrated GPU and discrete GPU video outputs to a single LVDS or eDP display interface.

IC Role / Device Role / Timing Role: High-bandwidth analog mux handling parallel pixel data lanes with matched trace lengths preserved.

Use Value: 5Ω R_ON minimizes differential skew across RGB channels; Hi-Z state isolates inactive GPU during mode transitions.

PCIe Gen1 Lane Sharing

Embedded Controller I/O Expansion

Use Scenario: Sharing a single PCIe x1 lane between baseband modem and Wi-Fi/BT combo chip in space-constrained mobile modules.

IC Role / Device Role / Timing Role: Low-latency, transparent signal path switch with no protocol awareness required.

Use Value: Near-zero propagation delay avoids violating PCIe Gen1 setup/hold timing; 50pF total capacitance meets spec for ≤2.5GT/s signaling.

Use Scenario: Expanding GPIO count from an embedded controller to multiple peripheral sensors (accelerometer, ambient light, lid open/close).

IC Role / Device Role / Timing Role: Digital signal selector enabling one controller pin to service four discrete functions via software-configurable routing.

Use Value: 0.2µA quiescent current reduces idle power in always-on sensor subsystems; rail-to-rail inputs accept 1.8V sensor logic directly.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74CBT3253PWR	Higher R_ON (7Ω typ.), wider VCC range (2.5–5.5V), no rail-to-rail input tolerance	Requires external level shifting for 1.8V logic control; better suited for 5V legacy systems	Select when 5V compatibility is mandatory and 2.5V–3.3V mixed-voltage control is not needed
PI3CH481LE	Single 8:1 mux (not dual 4:1), 4Ω R_ON, same 3.3V supply and TSSOP-16 package	Reduces channel count by half but increases input flexibility per channel; lacks independent enable per path	Select when board layout favors single-channel consolidation and independent EA/EB control is unnecessary

Compared with SN74CBT3253PWR and PI3CH481LE, the PI3B3253LE-2017 uniquely delivers dual independent 4:1 routing with rail-to-rail control, sub-1Ω R_ON advantage over TI's part, and true Hi-Z disable-making it optimal for compact, multi-source signal arbitration in 3.3V notebook designs.

Availability

PI3B3253LE-2017 is available at Aetrix Electronics and suitable for notebook computing, USB 2.0 switching, and PCIe Gen1 lane sharing requiring stable component supply, long-term lifecycle support, and RoHS-compliant green packaging.

Supply support for PI3B3253LE-2017 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 ICs, specializing in high-performance, energy-efficient solutions for consumer, computing, industrial, and automotive markets.

The PI3B3253 belongs to Diodes' NanoSwitch™ portfolio, engineered specifically for ultra-low-delay, low-power analog/digital signal routing in portable and space-constrained electronics.

FAQ

Is PI3B3253LE-2017 compatible with 74-series logic pinouts?

Yes, PI3B3253LE-2017 is explicitly pinout-compatible with 74F253, 74ALS/AS/LS253, and PI74FCT253T devices. Pin assignments for S0/S1, EA/EB, IA0–IA3, IB0–IB3, YA/YB, VCC, and GND match industry-standard 16-pin dual 4:1 mux layouts, enabling drop-in replacement without PCB redesign.

What is the maximum signal frequency supported by PI3B3253LE-2017?

The device supports signals up to 500MHz in practical applications, limited by R_ON–C_LOAD bandwidth. With 5Ω R_ON and 36pF C_ON, the -3dB bandwidth exceeds 1GHz; real-world limits arise from PCB trace impedance and load capacitance, not internal switching speed.

Does PI3B3253LE-2017 require external pull-up or pull-down resistors on control pins?

No. Control inputs (S0, S1, EA, EB) have internal biasing and specified VIH/VIL thresholds (2.0V/0.8V at VCC = 3.3V). External resistors are unnecessary unless specific noise immunity requirements demand them - standard CMOS driving suffices.

Can PI3B3253LE-2017 operate with 2.5V supply voltage?

No. PI3B3253LE-2017 is specified only for 3.3V ±10% (2.97V–3.63V). Operation below 2.97V violates Absolute Maximum Ratings and may cause undefined logic states, increased R_ON, or failure to meet t_IY and t_PLZ specifications per DS40212 Rev 2-2.

PI3B3253LE-2017 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 16-TSSOP (0.173", 4.40mm 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-TSSOP

PI3B3253LE-2017 FAQ

1.How can I place an order for PI3B3253LE-2017 through Aetrix?

Please submit a Request for Quotation (RFQ) for PI3B3253LE-2017 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 PI3B3253LE-2017 reliable?

The price and inventory of PI3B3253LE-2017 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI3B3253LE-2017 is usually 5 days.

3.What payment methods are accepted for PI3B3253LE-2017?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI3B3253LE-2017 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PI3B3253LE-2017?

PI3B3253LE-2017 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PI3B3253LE-2017 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 PI3B3253LE-2017?

For technical support, including PI3B3253LE-2017 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI3B3253LE-2017 requirements.

6.How does Aetrix verify that PI3B3253LE-2017 is sourced from the original manufacturer or authorized distributors?

All PI3B3253LE-2017 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 PI3B3253LE-2017 meets industry standards.

7.What is the process for return or replacement of PI3B3253LE-2017?

All PI3B3253LE-2017 units undergo pre-shipment inspection (PSI). If there is an issue with PI3B3253LE-2017, 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 PI3B3253LE-2017 part is unused and in its original packaging.

Return procedure for PI3B3253LE-2017:

1.Submit a request within 90 days.

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

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