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PCA9306DCUT

TIPCA9306DCUT

Texas Instruments
Voltage Level Translator Bidirectional 1 Circuit 2 Channel 8-VSSOP
Active7,658 in stock
Datasheet Digi-Key Compare Prices

Overview

The PCA9306DCUT is a dual-channel bidirectional voltage-level translator designed for I2C-bus and SMBus applications. It enables seamless communication between devices operating on different voltage rails from 1.2 V to 3.3 V on the low side and 1.8 V to 5.5 V on the high side. Because it uses a pass-gate architecture, it does not require a direction pin, making it ideal for standard open-drain serial interfaces.

Why Choose This Part

It offers an extremely low propagation delay of less than 1.5 ns due to its 3.5-ohm ON-state resistance. The device supports flow-through pinout for easier PCB routing and features an Enable (EN) pin that provides high-impedance isolation when pulled low, preventing bus lockup during power sequencing.

Applications

I2C Bus Level Shifting
Connecting 1.8V sensors or EEPROMs to a 3.3V or 5V microcontroller master.
Mixed-Voltage SMBus Systems
Interfacing battery management systems with high-voltage processors while maintaining signal integrity.
GPIO Voltage Translation
Bridging low-voltage logic outputs to higher voltage peripheral control inputs.
MDIO Interface Level Shifting
Translating management data input/output signals between networking PHYs and MACs.

Key Specifications

Features Auto-Direction Sensing
Output Type Open Drain, Push-Pull
Channel Type Bidirectional
Mounting Type Surface Mount
Package / Case 8-VFSOP (0.091", 2.30mm Width)
Voltage - VCCA 1.2 V ~ 3.3 V
Voltage - VCCB 1.8 V ~ 5.5 V
Translator Type Voltage Level
Number of Circuits 1
Channels per Circuit 2
Operating Temperature -40degC ~ 105degC (TA)
Supplier Device Package 8-VSSOP

Getting Started

To implement this part, place a 200-kohm pull-up resistor from VCCB to the EN pin and connect VREF1 to the lower voltage supply. Ensure pull-up resistors are present on both the SDA and SCL lines for both the low-side and high-side rails as the device is passive. Evaluation can be done using the PCA9306EVM prototyping module.

PCA9306 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Temp Range Stock
PCA9306DCUT (this part) VFSOP-8 -40degC ~ 105degC .. 7,658
PCA9306DQER XFDFN-8 -40degC ~ 85degC (.. 46,889
PCA9306DCTR Tape & Reel LSSOP-8 -40degC ~ 105degC .. 10,312
PCA9306DCUR VFSOP-8 -40degC ~ 105degC .. 80,613
Also available as: PCA9306JKZ, PCA9306