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

Diodes Incorporated PI3VT3306LEX

Name: PI3VT3306LEX
Brand: Diodes Incorporated
SKU: PI3VT3306LEX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PI3VT3306LEX

Manufacturer:: Diodes Incorporated

Category:: Signal Switches, Multiplexers, Decoders

Package:: 8-TSSOP (0.173", 4.40mm Width)

Datasheet:: PI3VT3306LEX.pdf

Description:: IC BUS SWITCH 1 X 1:1 8TSSOP

Quantity:: RFQ Add To RFQ list

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Inventory:2,647

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Product details

Overview

PI3VT3306LEX from Diodes Incorporated (acquired Pericom Semiconductor) is a 2-bit, 2-port bus switch IC performing bidirectional voltage translation between 3.3V ↔ 2.5V and 2.5V ↔ 1.8V domains, featuring 5Ω typical on-resistance, near-zero propagation delay (0.25ns), and active-low bus enable control. It operates from 2.5V or 3.3V supply and is used in mixed-voltage memory/data bus interfaces.

For engineers reviewing the PI3VT3306LEX datasheet, PI3VT3306LEX pinout, PI3VT3306LEX application, or PI3VT3306LEX equivalent, key selection criteria include verified level-shifting directionality, guaranteed R_ON ≤ 8Ω at V_CC = 2.5V, thermal stability across –40°C to +85°C, and Pb-free TSSOP-8 package compliance.

Technical Context

This device implements a passive FET-based analog bus switch architecture with no internal level-shifting circuitry-voltage translation occurs inherently via supply-rail referenced conduction. Each of the two independent channels (A1↔B1, A2↔B2) is controlled by its dedicated active-low Bus Enable (BE1/BE2) input.

Operation requires strict adherence to supply voltage hierarchy: when V_CC = 3.3V, inputs up to 3.3V translate to ~2.5V outputs; when V_CC = 2.5V, inputs up to 2.5V translate to ~1.8V outputs. The switch exhibits <10pF off-capacitance and 10pF on-capacitance, minimizing signal integrity impact in high-speed data paths.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Supply Range	2.5V ±0.2V or 3.3V ±0.3V - defines supported rail combinations for translation
R_ON (Typ.)	5Ω at V_CC = 3.3V, I_ON = –8mA - ensures minimal voltage drop and power loss in data path
t_PLH/t_PHL	0.25ns max (CL = 50pF) - contributes negligible delay beyond trace RC in high-speed buses
V_IH/V_IL	1.8V min / 0.8V max - compatible with standard 3.3V/2.5V logic thresholds
C_OFF	5.0pF - isolates ports effectively when disabled, reducing crosstalk
Operating Temp	–40°C to +85°C ambient - supports industrial-grade embedded system deployment

Pinout & Package

PI3VT3306LEX is packaged in an 8-pin Pb-free & Green plastic TSSOP (173-mil wide), with gull-wing leads and 0.65mm pitch. Thermal pad not present; JEDEC MO-153 compliant.

Pin/Terminal	Circuit Role	Design Meaning
BEn (BE1, BE2)	Active-low bus enable control	Drives corresponding A/B channel into high-Z when high; enables bidirectional conduction when low
A1, A2	Port A data terminal	Connects bidirectionally to B1/B2 when respective BE is asserted; no internal direction control
B1, B2	Port B data terminal	Electrically identical to A pins; translation direction determined solely by V_CC and connected rail voltages
V_CC	Positive supply	Sets output translation level (e.g., 3.3V → 2.5V); must be stable and decoupled
GND	Ground reference	Common return for all signals and supply; critical for noise immunity in mixed-voltage systems

Key Features

Feature	Design Value
Bidirectional voltage translation	Supports 3.3V↔2.5V and 2.5V↔1.8V without external biasing or direction pins
Low on-resistance	5Ω typical ensures <50mV drop at 10mA, preserving signal swing in 1.8V/2.5V I/O
Near-zero propagation delay	0.25ns max eliminates timing budget concerns in DDR, SMBus, or PCIe sideband applications
Pb-free & Green packaging	TSSOP-8 (L) meets RoHS 2011/65/EU and JEDEC J-STD-020 reflow profiles

Applications

DDR Memory Interface

SMBus/I²C Level Translation

Use Scenario: Interfacing 3.3V SMBus host controller with 2.5V or 1.8V peripheral devices in server management subsystems.

IC Role / Device Role / Timing Role: Bidirectional passive translator enabling protocol-compliant communication across voltage domains without clock stretching or arbitration interference.

Use Value: Eliminates need for active translators with pull-up dependencies; preserves SMBus timing margins due to sub-nanosecond delay.

Use Scenario: Connecting 3.3V microcontroller GPIO to 2.5V DDR2 SDRAM address/control bus in embedded computing modules.

IC Role / Device Role / Timing Role: Low-R_ON analog switch providing clean, impedance-matched signal routing between mismatched I/O rails.

Use Value: Prevents logic threshold violations and reduces setup/hold time uncertainty caused by resistive divider-based translation.

PCIe Sideband Signal Routing

FPGA I/O Voltage Bridging

Use Scenario: Routing PCIe WAKE#, PERST#, or CLKREQ# signals between 3.3V chipset and 1.8V FPGA endpoint in add-in cards.

IC Role / Device Role / Timing Role: High-impedance isolation and low-delay pass-through during active state; complete signal blocking when disabled.

Use Value: Ensures reliable power-state coordination across voltage domains without signal contention or leakage current paths.

Use Scenario: Bridging 2.5V FPGA configuration I/O to 1.8V flash memory interface in reconfigurable SoM designs.

IC Role / Device Role / Timing Role: Enables simultaneous operation of dual-voltage peripherals using single-FPGA bank without level-shifter IC proliferation.

Use Value: Reduces BOM count and PCB area vs. discrete MOSFET solutions while maintaining signal fidelity up to 100MHz.

Equivalent & Alternatives

The following parts are listed as comparable options for similar bidirectional voltage translation applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74AVC2T244RSE	Active dual-bit translator with direction control, 3.6V max V_CC, 3.5Ω R_ON	Requires explicit DIR pin management; supports wider voltage range (1.2V–3.6V)	Preferred when direction-aware control or multi-rail flexibility (e.g., 1.2V ↔ 3.3V) is required
TXS0102DCUR	Auto-direction sensing, 5.5V max V_CC, 10Ω R_ON, higher ICC (20µA)	Eliminates BE pin but adds internal bias circuitry; unsuitable for high-impedance or low-leakage buses	Chosen when board space is constrained and automatic direction detection outweighs R_ON penalty

Compared with SN74AVC2T244RSE and TXS0102DCUR, PI3VT3306LEX offers lowest R_ON and zero propagation delay but requires explicit enable control and fixed translation ratios-ideal for deterministic, low-latency, low-power mixed-voltage data paths where direction is static.

Availability

PI3VT3306LEX is available at Aetrix Electronics and suitable for DDR memory interfaces, SMBus/I²C subsystems, PCIe sideband routing, and FPGA I/O bridging requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for PI3VT3306LEX 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 acquired Pericom Semiconductor in 2017 and integrates its high-performance interface solutions into its broad portfolio of analog and mixed-signal ICs.

PI3VT3306LEX belongs to Diodes' legacy Pericom bus switch product line, engineered specifically for low-latency, low-R_ON voltage translation in memory, storage, and high-speed digital interconnect applications.

FAQ

Can PI3VT3306LEX translate 3.3V to 1.8V directly?

No. PI3VT3306LEX performs only adjacent-rail translation: 3.3V supply yields ~2.5V output; 2.5V supply yields ~1.8V output. Direct 3.3V-to-1.8V translation requires cascading two devices or selecting a multi-rail translator like the TXB0108.

Is external pull-up required on the BE pin?

Yes. The datasheet specifies a pull-up resistor on each BE pin for power-up protection to ensure switches remain disabled (high-Z) during power sequencing. A 10kΩ resistor to V_CC is typical and prevents unintended conduction at startup.

What is the maximum capacitive load this switch can drive?

The device is characterized up to 50pF load capacitance for timing specs. While functional beyond that, rise/fall times degrade linearly with load; for >50pF, verify signal integrity via simulation or measurement, especially above 50MHz.

Does PI3VT3306LEX support hot-swap or live-insertion?

No. It lacks power-sequence tolerance or I_OFF protection. Applying voltage to A/B pins before V_CC is stable may cause latch-up or excessive current. Power sequencing must follow V_CC → control inputs → data signals.

PI3VT3306LEX Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 8-TSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: Bus Switch

Circuit:: 1 x 1:1

Independent Circuits:: 2

Current - Output High, Low:: -

Voltage Supply Source:: Single Supply

Voltage - Supply:: 2.3V ~ 2.7V, 3V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-TSSOP

PI3VT3306LEX FAQ

1.How can I place an order for PI3VT3306LEX through Aetrix?

Please submit a Request for Quotation (RFQ) for PI3VT3306LEX 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 PI3VT3306LEX reliable?

The price and inventory of PI3VT3306LEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI3VT3306LEX is usually 5 days.

3.What payment methods are accepted for PI3VT3306LEX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI3VT3306LEX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PI3VT3306LEX?

PI3VT3306LEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PI3VT3306LEX 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 PI3VT3306LEX?

For technical support, including PI3VT3306LEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI3VT3306LEX requirements.

6.How does Aetrix verify that PI3VT3306LEX is sourced from the original manufacturer or authorized distributors?

All PI3VT3306LEX 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 PI3VT3306LEX meets industry standards.

7.What is the process for return or replacement of PI3VT3306LEX?

All PI3VT3306LEX units undergo pre-shipment inspection (PSI). If there is an issue with PI3VT3306LEX, 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 PI3VT3306LEX part is unused and in its original packaging.

Return procedure for PI3VT3306LEX:

1.Submit a request within 90 days.

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

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