PCA9555DB - Texas Instruments

Manufacturer Part Number

PCA9555DB

Manufacturer

texas-instruments

Introduction

PCA9555DB is an I2C and SMBus compatible 16-bit I/O expander designed to provide general-purpose remote I/O expansion for microcontroller applications.

Product Features and Performance

16 I/O pins that can be configured individually

I2C and SMBus interface support

Interrupt output capability for event-driven applications

Power-on reset (POR) feature

Push-Pull output type

Max clock frequency of 400 kHz

Wide voltage supply range from 2.3V to 5.5V

Operating temperature between -40°C and 85°C

Product Advantages

Increases the number of I/O ports available

Low power consumption

Flexible interfacing with both I2C and SMBus

Suitable for a wide range of operating conditions

Key Technical Parameters

Number of I/O: 16

Interface: I2C, SMBus

Output Type: Push-Pull

Current Output Source/Sink: 10mA, 25mA

Clock Frequency: 400 kHz

Voltage Supply: 2.3V to 5.5V

Operating Temperature: -40°C to 85°C

Quality and Safety Features

High reliability with built-in power-on reset

Designed for robust operation across a wide range of temperatures

Compatibility

Compatible with various microcontrollers supporting I2C or SMBus

Surface mount package compatible with standard PCB technologies

Application Areas

Remote sensing

Server management

Industrial control

Automotive systems

Robotics

Product Lifecycle

Status: Obsolete

Replacement or upgrade options should be evaluated as this model may no longer be manufactured

Several Key Reasons to Choose This Product

Enhances microcontroller functionality by extending I/O capability

Easy to integrate with existing I2C or SMBus systems

Robust design suitable for demanding applications

POR feature ensures reliable performance after power resets

Broad compatibility and ease of mounting with surface mount SSOP package