PCF8574PW - Texas Instruments

Manufacturer Part Number

PCF8574PW

Manufacturer

Texas Instruments

Introduction

The PCF8574PW is a remote 8-bit I/O expander for I2C-bus with an interrupt function.

Product Features and Performance

8-bit remote I/O expander for I2C-bus

Built-in interrupt function to alert the main controller of input changes

Power-on reset (POR)

Push-pull output type provides direct drive capabilities

Supports clock frequency of up to 100 kHz for the I2C interface

Configurable output structure allows for direct connection to a microcontroller

Low-standby current consumption

Product Advantages

Expands I/O capabilities using only two bus lines

Reduces pin count requirements on microcontrollers with limited GPIO

Interrupt feature increases efficiency by eliminating need to poll inputs continuously

Simple I2C-bus interface simplifies communication

Compatibility across a wide voltage range (2.5V to 6V) enhances versatility

Robust operational temperature range for high-reliability applications

Key Technical Parameters

Number of I/O: 8

Interface: I2C

Interrupt Output: Yes

Current - Output Source/Sink: 1mA, 25mA

Clock Frequency: 100 kHz

Voltage - Supply: 2.5V ~ 6V

Operating Temperature: -40°C ~ 85°C

Mounting Type: Surface Mount

Package / Case: 20-TSSOP (0.173", 4.40mm Width)

Supplier Device Package: 20-TSSOP

Quality and Safety Features

Operational across a broad temperature range ensuring stability in varying environments

Power-on reset (POR) for reliable operation following voltage fluctuations

Compatibility

Compatible with any microcontroller supporting I2C interface

Suitable for use with various development environments

Application Areas

Industrial control systems

Robotics

Consumer electronics

Automotive applications

Home automation

Data acquisition systems

Product Lifecycle

Obsolete

Manufacturer may have alternatives or replacements

Check with the manufacturer for information on lifecycle management

Several Key Reasons to Choose This Product

Provides additional I/O expansion with minimal integration complexity

Integral interrupt functionality aids in efficient microcontroller communication

Adapts to various voltage levels for system compatibility

Compact 20-TSSOP package saves space in PCB design

Suitable for a wide range of applications due to robust operating temperature range

Manufactured by Texas Instruments, a reputable leader in semiconductor solutions