PCA9555PW - Texas Instruments

Manufacturer Part Number

PCA9555PW

Manufacturer

Texas Instruments

Introduction

The PCA9555PW is an interface I/O expander from Texas Instruments designed to provide additional I/O capabilities through I2C and SMBus interfaces.

Product Features and Performance

16 I/O ports

I2C and SMBus compatible interface

Interrupt Output support

Power-on reset (POR) feature

Push-Pull Output Type

Allows for 10mA and 25mA output source/sink

Clock frequency support up to 400 kHz

Supports supply voltages from 2.3V to 5.5V

Designed for surface mounting

Product Advantages

Provides I/O expansion for microcontrollers

Integrated POR simplifies power management

Robust push-pull output allows for stable signal driving

Wide voltage range support improves compatibility with various systems

Key Technical Parameters

Number of I/O: 16

Clock Frequency: 400 kHz

Voltage Supply: 2.3V ~ 5.5V

Current Output Source/Sink: 10mA, 25mA

Operating Temperature: -40°C ~ 85°C

Quality and Safety Features

Robust operation within a wide temperature range

Push-Pull outputs provide reliable signal integrity

Power-on Reset for improved safety on power-up

Compatibility

Compatible with devices supporting I2C and SMBus interface

Supports wide voltage range for flexible system integration

Application Areas

Microcontroller expansion

Robotics

Industrial controls

Home automation systems

Product Lifecycle

Status: Obsolete

Note: Check for potential replacements or upgrades as this model may no longer be produced.

Several Key Reasons to Choose This Product

Expansion of I/O ports facilitates more complex control systems

Power-on Reset enhances system reliability on startup

Compatible with a wide range of devices and systems due to its versatile voltage support

Ideal for applications in harsh temperature environments

Push-Pull output type ensures solid and stable signal output