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

Diodes Incorporated PI5C3253QE

Name: PI5C3253QE
Brand: Diodes Incorporated
SKU: PI5C3253QE
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PI5C3253QE

Manufacturer:: Diodes Incorporated

Category:: Signal Switches, Multiplexers, Decoders

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

Datasheet:: PI5C3253QE.pdf

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

Quantity:: RFQ Add To RFQ list

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Inventory:8,255

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Product details

Overview

PI5C3253QE from Pericom Semiconductor is a dual 4:1 multiplexer/demultiplexer bus switch with three-state outputs, pin-compatible with 74F253 and 74ALS/AS/LS253 logic families. It features 5Ω on-resistance, near-zero propagation delay (0.25 ns), ultra-low quiescent current (0.2 μA typical), and operates over –40°C to +85°C ambient temperature. Used in notebook PC memory bus routing and low-power data path switching.

For engineers reviewing the PI5C3253QE datasheet, PI5C3253QE pinout, PI5C3253QE application, or PI5C3253QE equivalent, key selection criteria include on-resistance matching, enable timing (tPZH/tPZL ≤ 6.0 ns), supply voltage range (–0.5 V to +7.0 V), and QSOP-16 thermal performance under 0.5 W power dissipation.

Technical Context

The PI5C3253QE implements two independent 4:1 analog bus switches using NMOS pass-gate architecture with complementary control logic. Each channel has separate enable (EA/EB) and dual-bit select (S0/S1) inputs driving four input pairs (IA0–IA3, IB0–IB3) to shared outputs (YA/YB).

Switching is bidirectional with no level-shifting; signal integrity is preserved via direct metal-to-metal conduction when enabled and high-impedance isolation when disabled. ESD protection meets 2 kV HBM, and clamp diodes limit input voltage to –1.2 V under negative transient conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
On-Resistance	5 Ω typical - ensures minimal voltage drop and signal attenuation across switched paths at 48 mA load.
Propagation Delay	0.25 ns - contributes negligible timing skew in high-speed memory or address bus applications.
Quiescent Current	0.2 μA typical - enables battery-powered operation in notebooks without measurable standby drain.
Supply Voltage Range	–0.5 V to +7.0 V - supports 3.3 V and 5 V systems while tolerating transient overshoot/undershoot.
ESD Protection	2 kV HBM - provides robust handling during PCB assembly and system integration.
Operating Temperature	–40°C to +85°C - qualified for industrial and portable computing environments.

Pinout & Package

PI5C3253QE is packaged in a 16-pin QSOP (150-mil wide, package code Q), RoHS-compliant and halogen-free per Pericom's green initiative.

Pin/Terminal	Circuit Role	Design Meaning
EA, EB	Channel Enable Inputs	Active-low enables independently activate each 4:1 mux channel; high-Z output when asserted high.
S0, S1	Binary Select Inputs	Two-bit address selects one of four input pairs per channel (00–11); no internal decoding delay.
IA0–IA3, IB0–IB3	Data Inputs	Bidirectional analog/digital signal terminals; connected directly to YA/YB when switch is ON.
YA, YB	Outputs	Three-state outputs driven by selected inputs; high-impedance when EA/EB = high.
VCC, GND	Power Supply	Single 5 V supply only; no separate logic or analog rails required.

Key Features

Feature	Design Value
Direct Bus Connection	Eliminates ground bounce and logic-level translation, preserving signal integrity in backplane and memory interfaces.
PIN-Compatible Replacement	Drop-in upgrade for legacy 74-series 253 devices without board redesign or timing recalibration.
Ultra-Low Power Operation	0.2 μA quiescent current reduces thermal load and extends battery life in portable systems.
Low On-Resistance Mismatch	≤2 Ω variation between channels ensures matched signal path loss in differential or parallel bus configurations.

Applications

Memory Bus Switching

Notebook PC Data Routing

Use Scenario: Dynamic selection between two DDR SDRAM banks sharing a common controller interface.

IC Role / Device Role / Timing Role: Dual 4:1 analog bus switch enabling time-multiplexed access without clock domain crossing or buffering.

Use Value: 5 Ω R_ON minimizes signal degradation across 100 MHz memory clocks; 0.25 ns t_IY avoids setup/hold violations.

Use Scenario: Isolating USB 2.0 and PCIe lanes during sleep/wake transitions in ultrabook platforms.

IC Role / Device Role / Timing Role: Low-leakage bidirectional switch controlling physical layer connectivity under OS-directed power management.

Use Value: 0.2 μA I_CC prevents battery drain during S3 suspend; 2 kV HBM withstands ESD events during docking/undocking.

Legacy Logic Interface

Industrial Control Backplane

Use Scenario: Replacing obsolete 74F253 in programmable logic controller I/O modules requiring pin-for-pin compatibility.

IC Role / Device Role / Timing Role: Drop-in logic-level multiplexer maintaining identical truth table and timing behavior.

Use Value: Identical S0/S1/EA/EB pinout and 0.25 ns propagation delay ensure zero firmware or timing margin impact.

Use Scenario: Multiplexing sensor analog outputs (0–5 V) to a single ADC input in factory automation equipment.

IC Role / Device Role / Timing Role: Bidirectional analog switch supporting DC-coupled signals up to 7 V with rail-to-rail swing.

Use Value: –0.5 V to +7.0 V absolute max rating accommodates sensor overvoltage transients; 6 pF C_IN limits bandwidth distortion.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74CBT3253CPWR	Higher R_ON (7 Ω typ), higher ICC (10 μA), same QSOP-16 footprint	Less suitable for battery-sensitive designs; wider timing margins acceptable	Select when TI ecosystem alignment or longer production availability is prioritized
74LVC253PW	CMOS logic-based (not analog bus switch); 3.3 V only; no R_ON spec	Requires level-shifting for mixed-voltage systems; introduces propagation delay (~5 ns)	Choose only for purely digital control paths where analog transparency is not required

Compared with SN74CBT3253CPWR and 74LVC253PW, the PI5C3253QE delivers superior analog signal fidelity (5 Ω R_ON, 0.25 ns t_IY) and ultra-low power (0.2 μA), making it optimal for portable, mixed-signal, and legacy-compatible designs where signal integrity and battery life are critical.

Availability

PI5C3253QE is available at Aetrix Electronics and suitable for notebook PC design, industrial backplane routing, memory subsystems, and legacy logic replacement requiring stable component supply and long-term lifecycle support.

Supply support for PI5C3253QE 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, timing, and signal-integrity solutions, acquired by Diodes Incorporated in 2016; its portfolio emphasizes low-jitter clock distribution and low-R_ON analog switching.

The PI5C3253 belongs to Pericom's bus switch product line, designed specifically for transparent, low-latency, low-power signal routing in portable computing and industrial control systems where analog fidelity and pin compatibility are essential.

FAQ

Is PI5C3253QE compatible with 3.3 V logic levels?

Yes - the device accepts 3.3 V TTL-compatible inputs (VIH ≥ 2.0 V, VIL ≤ 0.8 V) and operates from a 5 V supply. Its inputs are 5 V tolerant, and outputs swing rail-to-rail within the VCC/GND rails, enabling safe interfacing with 3.3 V controllers driving the S0/S1/EA/EB pins.

Does PI5C3253QE support bidirectional signal flow?

Yes - all I/O paths (IA0–IA3, IB0–IB3, YA, YB) are fully bidirectional with no internal direction control. Signal flow direction depends solely on external source/sink configuration, making it suitable for both address/data and analog sensor multiplexing.

What is the thermal resistance (θ_JA) of the QSOP-16 package?

Pericom's published thermal data for the QSOP-16 package (code Q) specifies θ_JA = 120°C/W under JEDEC JESD51-2 standard conditions (single-layer board, 1 in² copper). At 0.5 W max power dissipation, this yields a worst-case junction rise of 60°C above ambient.

Can PI5C3253QE be used in hot-swap applications?

No - the device lacks built-in hot-swap protection circuitry such as slew-rate control or fault reporting. While its –0.5 V to +7.0 V absolute maximum ratings tolerate brief transients, controlled power sequencing is required to avoid latch-up or damage during live insertion.

PI5C3253QE 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:: 4.75V ~ 5.25V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-QSOP

PI5C3253QE FAQ

1.How can I place an order for PI5C3253QE through Aetrix?

Please submit a Request for Quotation (RFQ) for PI5C3253QE 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 PI5C3253QE reliable?

The price and inventory of PI5C3253QE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI5C3253QE is usually 5 days.

3.What payment methods are accepted for PI5C3253QE?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI5C3253QE transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PI5C3253QE?

PI5C3253QE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PI5C3253QE 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 PI5C3253QE?

For technical support, including PI5C3253QE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI5C3253QE requirements.

6.How does Aetrix verify that PI5C3253QE is sourced from the original manufacturer or authorized distributors?

All PI5C3253QE 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 PI5C3253QE meets industry standards.

7.What is the process for return or replacement of PI5C3253QE?

All PI5C3253QE units undergo pre-shipment inspection (PSI). If there is an issue with PI5C3253QE, 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 PI5C3253QE part is unused and in its original packaging.

Return procedure for PI5C3253QE:

1.Submit a request within 90 days.

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

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