PCA9535PWR - Texas Instruments

Manufacturer Part Number

PCA9535PWR

Manufacturer

Texas Instruments

Introduction

The PCA9535PWR is an interface I/O expander from Texas Instruments that extends the number of I/O ports available on a processor or controller via the I2C or SMBus interface.

Product Features and Performance

16 I/O ports that can be configured as input or output

I2C and SMBus compatible interface

Interrupt output for input change notification

Power-on reset (POR) feature

Push-Pull output type

Supports 400 kHz I2C bus clock frequency

Wide supply voltage range from 2.3V to 5.5V

Operational temperature range from -40°C to 85°C

Product Advantages

Provides significant expansion of I/O ports using only two bus lines

Interrupt feature allows efficient monitoring of input changes without polling

Low power consumption suitable for battery-powered applications

High flexibility with wide voltage and temperature operational range

Simplifies PCB design with Surface Mount Technology (SMT) packaging

Key Technical Parameters

Number of I/O: 16

Interface: I2C, SMBus

Interrupt Output: Yes

Output Type: Push-Pull

Current Output Source/Sink: 10mA, 25mA

Clock Frequency: 400 kHz

Voltage Supply: 2.3V ~ 5.5V

Operating Temperature: -40°C ~ 85°C

Mounting Type: Surface Mount

Package / Case: 24-TSSOP

Quality and Safety Features

Built-in power-on reset maintains stability

Compliant with the I2C bus specification

Compatibility

Compatible with any microcontroller or processor with an I2C bus interface

Application Areas

Expanding GPIOs in embedded systems

Mobile devices requiring additional I/O ports

Industrial control and monitoring systems

Home automation and smart appliances

Product Lifecycle

Not For New Designs, indicating the product is mature and may have limited availability with no direct replacement or upgrade

Several Key Reasons to Choose This Product

Expands I/O capacity efficiently with minimal hardware requirements

Simplifies monitoring of inputs with the interrupt feature, reducing overall system power consumption

Flexible power supply requirements enable use in a wide range of applications

Easy to integrate into existing designs with standard I2C bus interface

Texas Instruments' reliability and support for a mature product, despite its status, ensure a functional lifespan for existing projects