PCA9557DR - Texas Instruments

Manufacturer Part Number

PCA9557DR

Manufacturer

Texas Instruments

Introduction

The PCA9557DR is an 8-bit I/O expander with an SMBus/I2C-bus interface. It is designed to provide general-purpose parallel input/output expansion for I2C/SMBus systems.

Product Features and Performance

8-bit parallel input/output interface

Power-on reset (POR)

Open-drain or push-pull outputs

400 kHz SMBus/I2C-bus interface

3 V to 5.5 V operation

10 mA source/25 mA sink output current

No interrupt output

Product Advantages

Provides additional I/O ports for I2C/SMBus systems

Flexible output configuration (open-drain or push-pull)

Wide operating voltage range

Low power consumption

Small package size (16-SOIC)

Key Technical Parameters

Package: 16-SOIC (0.154", 3.90mm Width)

Mounting Type: Surface Mount

Operating Temperature: -40°C to 85°C

Supply Voltage: 2.3V to 5.5V

Clock Frequency: 400 kHz

Output Current: 10mA source, 25mA sink

Quality and Safety Features

RoHS3 compliant

Tape and reel packaging

Compatibility

The PCA9557DR is compatible with SMBus and I2C-bus systems.

Application Areas

General-purpose I/O expansion for I2C/SMBus systems

Embedded systems

Industrial automation

Consumer electronics

Product Lifecycle

The PCA9557DR is an active product and is not nearing discontinuation. Replacement or upgraded products may be available from Texas Instruments.

Key Reasons to Choose This Product

Flexible I/O expansion for I2C/SMBus systems

Wide operating voltage range

Low power consumption

Small package size

RoHS3 compliance

Availability in tape and reel packaging