TCA9509DGKR - Texas Instruments

Manufacturer Part Number

TCA9509DGKR

Manufacturer

Texas Instruments

Introduction

The TCA9509DGKR is an interface device designed for I2C bus signal buffering.

Product Features and Performance

Two-channel I2C buffer

Supports hot-swappable I2C-bus and SMBus buffering

Provides bidirectional buffering between different voltage logic levels

Maximum data rate of 400kHz

Supports voltage level translation 2.7V to 5.5V

Product Advantages

Enables extension of I2C bus signals

Prevents I2C bus lock-up and improves system reliability

Accommodates standard mode and fast mode I2C devices and multiple masters

Minimizes noise with integrated rise-time accelerator

Allows live insertion and removal without disruption

Key Technical Parameters

Input Capacitance: 6.5 pF

Supply Voltage Range: 2.7V to 5.5V

Supply Current: 3mA

Number of Channels: 1

Operating Temperature: -40°C to 85°C

Quality and Safety Features

Built-in ESD protection

Latch-up performance meets JESD 78, Class II

Compatibility

Compatible with I2C and SMBus standards

Supports devices with different voltages on the same bus

Application Areas

Consumer electronics

Telecommunications

Computing

Networking

Industrial

Product Lifecycle

Active product, not near discontinuation

Availability of replacements and upgrades as per standard Texas Instruments support

Several Key Reasons to Choose This Product

Robust ESD protection enhances the durability of the device

Low-voltage operation and level translation capability allow for flexibility in mixed-voltage systems

The compact 8-VSSOP package saves space on PCBs

High interoperability with other I2C interface devices increases design compatibility

Assurance of quality and reliability from a reputable manufacturer like Texas Instruments

Minimal design complexity required for I2C-bus buffering applications due to built-in features