Manufacturer Part Number
PCA9554DW
Manufacturer
Texas Instruments
Introduction
The PCA9554DW is an 8-bit I/O expander with an I2C bus and SMBus interface.
Product Features and Performance
8-bit I/O ports expandable via I2C interface
SMBus compatible
Interrupt output feature for input change notification
Power-on reset (POR)
Push-pull output type for direct drive capability
Supports 400 kHz I2C bus clock frequency
Wide supply voltage range (2.3V to 5.5V) for versatile power options
Operation in a broad temperature range of -40°C to 85°C
Product Advantages
Increases GPIO availability for microcontrollers with limited I/O pins
Minimizes microcontroller pin usage with I2C interface
Enables hot insertion due to its power-on reset feature
Better system response with interrupt output
Flexible usage across various power systems due to wide voltage range
Key Technical Parameters
Number of I/O: 8
Interface: I2C, SMBus
Interrupt Output: Yes
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
Quality and Safety Features
Designed to meet high industry standards for quality and safety
Over-temperature shutdown and power-on reset for operational safety
Compatibility
Compatible with I2C and SMBus protocols
Supports various microcontrollers with an I2C bus interface
16-SOIC package is compatible with standard surface mount processes
Application Areas
Consumer Electronics
Industrial Control Systems
Mobile phones
Embedded Systems
Servers
Product Lifecycle
Status: Last Time Buy (product nearing discontinuation)
Replacement or upgrades may be offered by Texas Instruments
Several Key Reasons to Choose This Product
Enables addition of I/O ports to save microcontroller resources
Simplifies design with built-in interrupt functionality
Robust performance across a wide voltage and temperature range
Support for hot-swapping with power-on reset feature
Expedites time-to-market with easy integration and compatibility
Provision of safety features to mitigate operational risks
Support from reputable manufacturer Texas Instruments