PCF8574APWR - Texas Instruments

Manufacturer Part Number

PCF8574APWR

Manufacturer

Texas Instruments

Introduction

The PCF8574APWR is a low-voltage 8-bit I/O expander for I2C bus with interrupt output from Texas Instruments.

Product Features and Performance

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

Provides I/O expansion for microcontrollers with I2C interface

Built-in interrupt output for input change notification

Power-On Reset (POR) feature

Open-drain interrupt output

Compatible with most microcontrollers with I2C interface

Product Advantages

Enables the addition of more I/O ports with a simple two-wire interface

Reduces the number of microcontroller pins required for control

Low standby current consumption for power-saving

Flexible power supply range (2.5V to 6V) suitable for various applications

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

Key Technical Parameters

Number of I/O: 8

Interface: I2C

Interrupt Output: Yes

Output Type: Push-Pull

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

Clock Frequency: 100 kHz

Voltage - Supply: 2.5V ~ 6V

Operating Temperature: -40°C ~ 85°C

Quality and Safety Features

Robust operation over a wide temperature range

Static-protection and latch-up performance exceeds JESD 78 Class II level B

Compatibility

Directly compatible with other I2C-bus devices

Compatible with standard I2C bus protocols

Application Areas

Microcontroller system I/O expansion

Industrial control systems

Signal bridging

Power management systems

Mobile applications requiring additional I/O

Product Lifecycle

Product status is Active

Not near discontinuation

Replacement and upgrade options available if necessary

Several Key Reasons to Choose This Product

Increases I/O capabilities without expanding microcontroller unit

Minimizes design complexity and board space

Supports a wide range of power supplies

Ease of integration with I2C communications

Robust operating range suitable for industrial environments

Comprehensive technical support and documentation from Texas Instruments