Manufacturer Part Number
PCA9538DGVR
Manufacturer
Texas Instruments
Introduction
The PCA9538DGVR is a low-voltage 8-bit General Purpose Input/Output (GPIO) expander with interrupt and reset for I2C-bus/SMBus applications.
Product Features and Performance
8-bit I/O ports with configurable polarity
I2C and SMBus interface support
Interrupt Output feature for input change notification
Power-On Reset (POR) support
Push-Pull Output Type
Current - Output Source/Sink up to 10mA, 25mA
Clock Frequency support up to 400 kHz
Wide Voltage Supply range from 2.3V to 5.5V
Operating Temperature range from -40°C to 85°C
Product Advantages
Flexible input/output configuration enhances peripheral expansion
Low power consumption suitable for battery-operated devices
Push-Pull outputs eliminate the need for pull-up resistors
Interrupt output enables immediate host notification of input changes, reducing polling over the I2C bus
Compact 16-TFSOP package saves PCB space
Key Technical Parameters
Number of I/O: 8
Interface: I2C, SMBus
Interrupt Output: Yes
Features: Power-On Reset
Current - Output Source/Sink: 10mA, 25mA
Clock Frequency: 400 kHz
Voltage - Supply: 2.3V ~ 5.5V
Operating Temperature: -40°C ~ 85°C
Quality and Safety Features
Highly integrated design for reliable operation
Compliant with I2C and SMBus standards
Designed for industrial temperature ranges
Compatibility
Compatible with standard I2C and SMBus protocols
Supports multiple host controllers
Application Areas
Embedded systems and microcontroller-based applications
Consumer electronics
Industrial control systems
Mobile and battery-operated devices
Data acquisition systems
Product Lifecycle
Last Time Buy status, indicating nearing discontinuation
Check with distributor or manufacturer for replacement or upgrade options
Several Key Reasons to Choose This Product
Versatility in the wide range operating voltage and temperature, making it suitable for various environments
Robust interface compatibility enhancing system integration
Simple input/output expansion for complex microcontroller projects
Real-time interrupt feature for enhanced system responsiveness
Streamlines design process due to standardized packaging and interface
Manufacturer support and reliability from Texas Instruments