PCA9544APW - Texas Instruments

Manufacturer Part Number

PCA9544APW

Manufacturer

Texas Instruments

Introduction

The PCA9544APW is an integrated circuit designed for I2C and SMBus interface applications requiring channel translation or switch capabilities.

Product Features and Performance

4-channel I2C-bus switch with interrupt logic

Supports voltage levels from 2.3V to 5.5V

Enables connection of up to four separate I2C or SMBus slave devices

Low standby current

High-speed operation - 400 kHz

Active LOW interrupt output

Active HIGH reset input

Noise filter on SCL/SDA inputs

Product Advantages

Allows expansion of I2C-bus by enabling multiple same-address devices

Minimizes the necessity for extensive wiring in multiplexing applications

Features built-in channel selection through I2C interface

Helps to resolve address conflicts between I2C or SMBus devices

Key Technical Parameters

Supply Voltage: 2.3V ~ 5.5V

4-channel non-latched bidirectional translation

Interface Type: I2C, SMBus

Package: 20-TSSOP

Quality and Safety Features

Comes with over-voltage tolerant I/Os

Ensures glitch-free power-up and power-down high-impedance

Compatibility

Compatible with different I2C-bus and SMBus devices and host controllers

Multi-voltage I/O ports for voltage-level translation

Application Areas

Application-specific servers

Industrial control and automation

Power management systems

Embedded systems and IoT devices

Product Lifecycle

Product Status: Obsolete

End-of-life notification provided, suggesting the need for last-time buys

Alternatives or next-generation replacements may be available

Several Key Reasons to Choose This Product

Enables complex I2C master-slave configurations

Facilitates design with multiple identical address I2C components

Lends itself to developing scalable systems

Reduces signal integrity issues from long I2C bus lines

Optimized for low-power consumption while maintaining high-speed data transfer