PCF8574ADW - Texas Instruments

Manufacturer Part Number

PCF8574ADW

Manufacturer

Texas Instruments

Introduction

Interface I/O expander for I2C bus

Product Features and Performance

8-bit quasi-bidirectional I/Os

I2C bus interface

Interrupt Output for input change notification

Power-on reset (POR)

Push-Pull Output Type

Current - Output Source/Sink capability from 1mA to 25mA

Supports Clock Frequencies up to 100 kHz

Product Advantages

Simplified I/O expansion using only two bus lines

Built-in interrupt functionality to improve communication efficiency

Suitable current output capability for driving LEDs and similar devices

Low standby current

Key Technical Parameters

Number of I/O: 8

Interface: I2C

Interrupt Output: Yes

Clock Frequency: 100 kHz

Voltage - Supply: 2.5V ~ 6V

Operating Temperature: -40°C ~ 85°C

Mounting Type: Surface Mount

Quality and Safety Features

Compliance with industry standards

Extended temperature range for industrial applications

Compatibility

Compatible with I2C-bus specification

Application Areas

Industrial control

Sensor networks

Automotive systems

Portable electronics

Product Lifecycle

Obsolete - consult manufacturer for replacement or upgrade options

Several Key Reasons to Choose This Product

Allows for increase of I/Os without changing microcontroller

Reduces wire complexity with I2C interface

Immediate notification with interrupt output for real-time system response

Wide operating voltage and temperature ranges suitable for various environments

Direct drive capability saves on additional components for outputs such as LEDs