PCA9557RGYR - Texas Instruments

Manufacturer Part Number

PCA9557RGYR

Manufacturer

Texas Instruments

Introduction

The PCA9557RGYR is an 8-bit I/O expander with an I2C and SMBus compatible interface, designed for GPIO expansion in applications requiring additional I/Os.

Product Features and Performance

I2C and SMBus Interface for easy integration into existing systems.

8-bit I/O expander increases available I/O pins.

Open Drain and Push-Pull output options provide versatility in controlling external components.

Power-on Reset (POR) feature ensures reliable start-up.

Supports clock frequencies up to 400 kHz for high-speed I/O expansion.

Operates over a wide supply voltage range (2.3V to 5.5V) catering to various system power requirements.

Temperature tolerance from -40°C to 85°C allows for use in harsh environments.

Product Advantages

Simplifies system design by reducing the need for multiple microcontrollers.

Flexible I/O configuration options support a wide range of applications.

High-speed operation and broad voltage compatibility enhance system performance.

The durable design enables reliable operation in challenging conditions.

Key Technical Parameters

Number of I/O: 8

Interface: I2C, SMBus

Output Type: Open Drain, Push-Pull

Current Output Source/Sink: 10mA, 25mA

Clock Frequency: 400 kHz

Voltage Supply: 2.3V ~ 5.5V

Operating Temperature: -40°C ~ 85°C

Quality and Safety Features

Built-in Power-on Reset for increased system reliability.

Manufactured by Texas Instruments, a leader in semiconductor quality and safety standards.

Compatibility

Compatible with a wide range of microcontrollers and processors via I2C and SMBus.

Flexible power requirements ensure compatibility with various power supply designs.

Application Areas

GPIO expansion for microcontrollers in automotive, industrial, and consumer electronics.

System monitoring and control where additional I/Os are required.

Product Lifecycle

Status: Obsolete. Customers may need to seek replacements or upgrades for new designs.

Replacement or upgrade options may be available within Texas Instruments' broad product portfolio.

Several Key Reasons to Choose This Product

High reliability and performance from a reputable semiconductor manufacturer.

Versatile I/O expansion facilitates design scalability.

Power-on Reset and operating temperature range enhance system stability and durability.

Broad compatibility with I2C and SMBus simplifies integration into existing designs.

Obsolescence status necessitates careful planning for future production needs.