TCA9539RGER - Texas Instruments

Manufacturer Part Number

TCA9539RGER

Manufacturer

Texas Instruments

Introduction

The TCA9539RGER is a 16-bit I/O expander from Texas Instruments, designed for I2C and SMBus interfaces, providing flexibility to extend the number of I/O points in microcontroller based systems.

Product Features and Performance

16 I/Os configurable as inputs or outputs

I2C and SMBus compatible interface

Interrupt output for input change detection

Power-on Reset (POR) feature

Push-pull output configuration

Output source/sink current is 10mA or 25mA

Supports clock frequencies up to 400 kHz

Operational voltage range of 1.65V to 5.5V

Suitable for operation in temperatures from -40°C to 85°C

Product Advantages

High I/O expansion capability without needing additional microcontroller pins

Low standby current suitable for battery powered applications

Programmable polarity inversion for inputs simplifies board design

Enhanced system reliability with built-in POR

Key Technical Parameters

Number of I/O: 16

Interface: I2C, SMBus

Interrupt Output: Yes

Current - Output Source/Sink: 10mA, 25mA

Clock Frequency: 400 kHz

Voltage - Supply: 1.65V to 5.5V

Operating Temperature: -40°C to 85°C

Mounting Type: Surface Mount

Package / Case: 24-VFQFN Exposed Pad

Quality and Safety Features

Ensured device performance and quality through Texas Instruments' stringent testing protocols

Over-temperature shutdown and under-voltage lockout safety features

Compatibility

Compatible with a wide array of microcontroller units (MCUs) with I2C or SMBus interface

Easily integrated into existing systems due to standard interface and common voltage ranges

Application Areas

Industrial controls

Home automation systems

Server farms

Gaming systems

Personal electronics

Product Lifecycle

Status: Active (not nearing discontinuation)

Long-term availability with support for future replacement or upgrade options

Several Key Reasons to Choose This Product

Provides extensive I/O expansion with minimal pin use from the main microcontroller

Support for a broad power supply range facilitates use with various logic levels and systems

Robust design suitable for industrial applications with a wide temperature range

Ease of system design and maintenance with interrupt-driven I/O change notification

Known and respected manufacturer with a reputation for reliability and support