PCA9535AHF,128 - NXP USA Inc.

Manufacturer Part Number

PCA9535AHF,128

Manufacturer

NXP Semiconductors

Introduction

The PCA9535AHF,128 is an I2C-bus and SMBus I/O expander designed to provide more GPIOs to a microcontroller or processor system.

Product Features and Performance

16-bit I/O port expander

I2C and SMBus compatible interface

Interrupt Output for event notification

Power-On Reset (POR) feature

Push-Pull output configuration

Can source or sink current up to 10mA and 25mA

Supports up to 400 kHz I2C bus clock frequency

Wide supply voltage range from 1.65V to 5.5V

Product Advantages

Provides additional I/O ports with simple serial communication

Low standby current suitable for battery-powered applications

Built-in reset function enhances system stability

Compatible with various microcontroller voltage levels

Supports hot insertion

Key Technical Parameters

Number of I/O: 16

Interface: I2C, SMBus

Interrupt Output: Yes

Current - Output Source/Sink: 10mA, 25mA

Clock Frequency: 400 kHz

Voltage - Supply: 1.65V ~ 5.5V

Operating Temperature Range: -40°C ~ 85°C

Quality and Safety Features

Built-in Power-On Reset

High ESD protection

Compliance with industry standards and specifications

Compatibility

Compatible with various I2C and SMBus systems

Supports multiple power supply voltages for different logic levels

Compatible with many microcontrollers and processors

Application Areas

Industrial control systems

Servers

Robotics

Consumer electronics

Automotive applications

Product Lifecycle

Status: Active

Not nearing discontinuation

Replacements or upgrades usually available

Several Key Reasons to Choose This Product

Expands the number of I/Os significantly for complex systems

Efficient I2C interface minimizes wiring complexity

Versatility in supporting different logic levels

Supports robust data transfer with interrupt outputs

Simplifies PCB design with its push-pull outputs saving external components

High integration suitable for space-constrained applications