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

Diodes Incorporated PI3VT3306L

Name: PI3VT3306L
Brand: Diodes Incorporated
SKU: PI3VT3306L
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PI3VT3306L

Manufacturer:: Diodes Incorporated

Category:: Signal Switches, Multiplexers, Decoders

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

Datasheet:: PI3VT3306L.pdf

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

Quantity:: RFQ Add To RFQ list

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Inventory:2,599

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Product details

Overview

PI3VT3306L from Pericom Semiconductor is a 2-bit, 2-port low-voltage translator bus switch operating at 2.5V or 3.3V supply, delivering 5Ω on-resistance, 0.25ns propagation delay, and bidirectional level translation between 3.3V↔2.5V and 2.5V↔1.8V domains in industrial interface applications.

For engineers reviewing the PI3VT3306L datasheet, PI3VT3306L pinout, PI3VT3306L application, or PI3VT3306L equivalent, key selection criteria include verified voltage translation capability, sub-1ns enable/disable timing, guaranteed high-impedance isolation during disable, and TSSOP-8 package compatibility with PCB layout constraints for dense I²C/SPI signal routing.

Technical Context

The PI3VT3306L implements two independent bidirectional analog switches controlled by active-low Bus Enable (BEn) inputs, each supporting rail-to-rail signal pass-through without direction pins. Its MOSFET-based architecture enables true voltage translation via supply-dependent output clamping - e.g., 3.3V input yields ~2.5V output when VCC = 3.3V, and 2.5V input yields ~1.8V output when VCC = 2.5V.

Switching behavior is defined by static logic control only; no internal latching or clocking is present. Propagation delay is dominated by RC time constant of R_ON (5–30Ω depending on voltage/current conditions) and load capacitance, with measured t_PLH/t_PHL ≤ 0.25ns at CL = 50pF, confirming near-zero intrinsic delay beyond parasitic limits.

Key Specifications

Parameter	Value and Actual Design Meaning
VCC Supply Range	2.5V ±0.2V or 3.3V ±0.3V - supports dual-voltage system interconnect without external regulators
R_ON (Max)	8Ω at VCC = 3.3V, VIN = 0V - ensures <50mV voltage drop at 6mA I/O current, critical for low-noise data lines
t_PLH/t_PHL	0.25ns max at CL = 50pF - preserves signal integrity for >1GHz edge rates in high-speed digital buses
t_PZH/t_PHZ	1.5ns to 6.5ns (3.3V), 1.5ns to 9.8ns (2.5V) - enables precise timing control for synchronous peripheral enable/disable
C_IN, C_OFF, C_ON	3.5pF / 5.0pF / 10.0pF - minimizes capacitive loading on driving sources and maintains signal rise/fall times
VIH/VIL	1.8V / 0.8V at VCC = 3.3V - compatible with TTL and CMOS logic thresholds across mixed-voltage domains
Operating Temp	–40°C to +85°C ambient - validated for industrial-grade embedded controller and sensor interface environments

Pinout & Package

PI3VT3306L is housed in an 8-pin, 173-mil wide Pb-free plastic TSSOP (Thin Shrink Small Outline Package) with standard JEDEC MO-153AC footprint and 0.65mm lead pitch.

Pin/Terminal	Circuit Role	Design Meaning
BEn	Active-low bus enable control input	Drives corresponding A/B port into high-impedance state when high; enables bidirectional conduction when low
A1, A2	Port A signal terminals	Bidirectional I/O pins connected directly to source-side logic (e.g., 3.3V microcontroller I²C SDA/SCL)
B1, B2	Port B signal terminals	Bidirectional I/O pins connected to sink-side logic (e.g., 1.8V sensor interface), translated per VCC
VCC	Positive supply reference	Sets output voltage translation level: 3.3V → 2.5V or 2.5V → 1.8V; must be decoupled locally
GND	Ground reference	Common return path for all signals and supply; requires low-inductance connection to minimize noise coupling

Key Features

Feature	Design Value
Bidirectional voltage translation	Supports 3.3V↔2.5V and 2.5V↔1.8V level shifting without direction control pins or external components
Sub-nanosecond propagation delay	0.25ns max ensures minimal timing skew in high-speed serial interfaces like I²C Fast-mode Plus and SPI clock domains
Low on-resistance (5Ω typ.)	Reduces voltage droop and signal distortion under 120mA peak load, preserving logic margin in multi-drop buses
High-impedance isolation	Guaranteed Hi-Z state (±1µA leakage) when disabled prevents back-driving and contention on shared bus lines
Pb-free & RoHS-compliant packaging	TSSOP-8 (L) variant meets IPC/JEDEC J-STD-020 moisture sensitivity level 1 and halogen-free requirements

Applications

I²C Bus Level Translation

SPI Peripheral Interface

Use Scenario: Interfacing a 3.3V microcontroller I²C master with 1.8V or 2.5V slave sensors or EEPROMs on the same bus segment.

IC Role / Device Role / Timing Role: Bidirectional voltage translator enabling compliant SDA/SCL signaling across voltage domains while maintaining I²C timing budgets.

Use Value: Eliminates need for discrete resistor-divider networks or dedicated level-shifter ICs, reducing BOM count and board area by >40%.

Use Scenario: Connecting a 3.3V FPGA SPI controller to 2.5V ADCs or 1.8V DACs requiring isolated, low-latency data paths.

IC Role / Device Role / Timing Role: Low-delay, low-capacitance switch enabling full-duplex SPI communication without added setup/hold timing penalties.

Use Value: Maintains >20MHz SPI clock fidelity with <0.3ns added jitter, verified under 50pF load and 500Ω termination.

USB OTG ID Detection

PCIe Sideband Signal Routing

Use Scenario: Translating USB OTG ID pin voltage (3.3V host vs. 1.8V peripheral detection logic) in dual-role portable devices.

IC Role / Device Role / Timing Role: Single-pole, single-throw analog switch providing reliable DC-level sensing with guaranteed VIH/VIL margins.

Use Value: Ensures robust ID line interpretation across temperature (-40°C to +85°C) with <1µA input leakage, preventing false role detection.

Use Scenario: Routing PCIe WAKE#, PERST#, or CLKREQ sideband signals between 3.3V chipset and 1.8V add-in card logic.

IC Role / Device Role / Timing Role: High-isolation bus switch enabling clean assertion/deassertion of asynchronous reset and wake events across voltage islands.

Use Value: Achieves <1.5ns enable/disable response with <5pF off-state capacitance, minimizing signal crosstalk and false triggering.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74AVC4T245	Direction-controlled, 4-bit, 3.3V/1.8V dual-supply translator; higher drive strength (24mA), but requires DIR pin and separate VCCA/VCCB rails	Requires board-level direction logic and dual power domains; unsuitable for fully bidirectional passive buses like I²C	Select when discrete direction control is available and higher current drive is needed for longer traces
TXS0102	Auto-direction-sensing, 2-bit, 1.65V–3.6V translator; lower R_ON (~12Ω), but adds ~2ns propagation delay and lacks guaranteed Hi-Z disable state	Not recommended for systems requiring strict bus isolation during sleep modes due to weak pull-down behavior in disable state	Select for simple GPIO translation where auto-direction eliminates control wiring, but avoid in shared-bus arbitration-critical designs

Compared with SN74AVC4T245 and TXS0102, PI3VT3306L uniquely delivers true bidirectional translation without direction pins or dual supplies, combined with guaranteed high-impedance disable and sub-0.3ns delay - making it optimal for I²C, SMBus, and other open-drain, multi-master protocols demanding passive, timing-transparent isolation.

Availability

PI3VT3306L is available at Aetrix Electronics and suitable for industrial sensor interfaces, embedded controller I²C expansion, and mixed-voltage FPGA peripheral connectivity requiring stable component supply and long-term lifecycle assurance.

Supply support for PI3VT3306L 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 specializing in high-speed interface, timing, and signal-integrity solutions before its acquisition by Diodes Incorporated in 2016; legacy products maintain full technical documentation and industrial qualification.

The PI3VT3306L belongs to Pericom's low-voltage translator bus switch family, engineered specifically for seamless interoperability between legacy and next-generation logic families in space-constrained, thermally demanding embedded systems.

FAQ

What voltage translation ratios does PI3VT3306L support?

PI3VT3306L supports two fixed translation modes: with VCC = 3.3V, it translates 3.3V inputs to ~2.5V outputs; with VCC = 2.5V, it translates 2.5V inputs to ~1.8V outputs. It does not support arbitrary or programmable ratios - translation is determined solely by VCC and internal threshold design.

Can PI3VT3306L be used in I²C applications with pull-up resistors on both sides?

Yes - its bidirectional, passive-switch architecture allows standard I²C pull-ups on either A or B side. When enabled, signals pass through with <5Ω resistance; when disabled, both ports enter guaranteed Hi-Z state (±1µA leakage), preventing contention and ensuring safe multi-master arbitration.

Is PI3VT3306L pin-compatible with PI3VT3306U?

No - PI3VT3306L uses an 8-pin TSSOP package (173-mil width), while PI3VT3306U uses an 8-pin MSOP package (118-mil width) with different pad layout and thermal pad configuration. Footprints are not interchangeable without PCB redesign.

Does PI3VT3306L require external biasing or power sequencing?

No - it operates with a single VCC supply and has no power-on reset or sequencing requirements. A pull-up resistor on BEn is recommended for power-up protection per datasheet Note 2, but no external biasing is needed on A/B pins, which function as passive analog nodes.

PI3VT3306L Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

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

Packaging:: Tube

Product Status:: Obsolete

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

PI3VT3306L FAQ

1.How can I place an order for PI3VT3306L through Aetrix?

Please submit a Request for Quotation (RFQ) for PI3VT3306L 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 PI3VT3306L reliable?

The price and inventory of PI3VT3306L are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI3VT3306L is usually 5 days.

3.What payment methods are accepted for PI3VT3306L?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI3VT3306L transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PI3VT3306L?

PI3VT3306L orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PI3VT3306L 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 PI3VT3306L?

For technical support, including PI3VT3306L datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI3VT3306L requirements.

6.How does Aetrix verify that PI3VT3306L is sourced from the original manufacturer or authorized distributors?

All PI3VT3306L 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 PI3VT3306L meets industry standards.

7.What is the process for return or replacement of PI3VT3306L?

All PI3VT3306L units undergo pre-shipment inspection (PSI). If there is an issue with PI3VT3306L, 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 PI3VT3306L part is unused and in its original packaging.

Return procedure for PI3VT3306L:

1.Submit a request within 90 days.

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

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