Manufacturer Part Number
PCA9539BS,118
Manufacturer
NXP Semiconductors
Introduction
The PCA9539BS,118 is an obsolete interface I/O expander from NXP Semiconductors designed to provide additional I/O ports via an I2C or SMBus interface.
Product Features and Performance
16 additional I/O ports
I2C, SMBus compatibility
Interrupt output feature
Power-on reset (POR) functionality
Push-pull output type
10mA, 25mA current output source/sink
Product Advantages
Expansion of I/O ports for microcontrollers with limited pins
Integration of interrupt feature for event-driven applications
Support for power-on reset to ensure reliable startup
Push-pull outputs capable of driving LEDs or other indicators
Key Technical Parameters
Number of I/Os: 16
Interface: I2C, SMBus
Interrupt Output: Yes
Clock Frequency: 400 kHz
Voltage - Supply: 2.3V to 5.5V
Operating Temperature: -40°C to 85°C
Quality and Safety Features
Operating temperature range suitable for industrial applications
Compatibility
Can interface with most microcontrollers supporting I2C or SMBus
Mounting Type: Surface Mount
Package / Case: 24-VFQFN Exposed Pad
Supplier Device Package: 24-HVQFN (4x4)
Application Areas
Used in a wide range of applications including embedded systems, industrial control, and automation.
Product Lifecycle
Obsolete - No longer in production
Check for replacement or upgrade options
Several Key Reasons to Choose This Product
Provides a simple way to add more I/O ports to systems with limited GPIO
Supports standard I2C and SMBus for easy integration
Includes POR for improved system reliability
Designed for industrial operating temperature range
Capable of driving moderate loads with push-pull outputs