PCF8574PWR - Texas Instruments

Manufacturer Part Number

PCF8574PWR

Manufacturer

Texas Instruments

Introduction

The PCF8574PWR is an I/O expander for the two-line bidirectional I2C bus (serial clock (SCL), serial data (SDA)).

Product Features and Performance

8-bit quasi-bidirectional I/O port

I2C interface with a maximum clock frequency of 100 kHz

Interrupt output feature for input change notification

Strong push-pull output capability

Active LOW interrupt output

Software configurable as either input or output

Built-in power-on reset

Product Advantages

Direct I2C interface to microcontrollers, minimizing signal wiring

Allows for the expansion of I/O ports, adding flexibility to microcontroller projects

Capable of sinking or sourcing current to interface with peripherals easily

Push-pull outputs eliminate the need for external pull-up resistors

Low standby current consumption for power-sensitive applications

Key Technical Parameters

Number of I/O: 8

Interface: I2C

Interrupt Output: Yes

Features: Power-on reset (POR)

Output Type: Push-Pull

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

Clock Frequency: 100 kHz

Voltage - Supply: 2.5V to 6V

Operating Temperature: -40°C to 85°C

Quality and Safety Features

Operational in a wide range of temperatures from -40°C to 85°C

Ensures safe operation through its power-on reset feature

Complies with Texas Instruments' quality control and safety standards

Compatibility

Compatible with any microcontroller supporting I2C protocol

Can be interfaced with other I2C devices on the same bus

Application Areas

Embedded systems

Microcontroller-based projects

Home automation

Industrial control

Consumer electronics

Mobile applications

Product Lifecycle

Product Status: Active

Not nearing discontinuation and replacements or upgrades are available as needed

Several Key Reasons to Choose This Product

Enables significant expansion of I/O capabilities without needing to change the main microcontroller

Provides easy interfacing with the I2C bus, saving development time

Integrated interrupt function allows for better management of input changes

Highly robust design suitable for industrial temperature ranges

Compact surface-mount 20-TSSOP package optimizes PCB space