Manufacturer Part Number
PCA9534DWR
Manufacturer
Texas Instruments
Introduction
The PCA9534DWR is an Interface I/O Expander designed to maximize the efficiency of I2C-bus expansion.
Product Features and Performance
8-bit I/O expander
I2C and SMBus interface support
Interrupt output feature
Power-on reset (POR)
Push-pull output type
Capable of sourcing/sinking current of 10mA and 25mA
Product Advantages
Enables parallel I/O expansion for microcontrollers with limited pins
Simplifies design with built-in POR feature
Interrupt output for enhanced system response
Supports higher current applications with 25mA sink capability
Key Technical Parameters
Number of I/O: 8
Clock Frequency: 400 kHz
Voltage Supply Range: 2.3V to 5.5V
Operating Temperature Range: -40°C to 85°C
Quality and Safety Features
Broad operating temperature suitable for industrial applications
Dependable performance characterized by Texas Instruments' standards
Compatibility
Compatible with I2C and SMBus protocols
Interfacing with various microcontrollers and processors using I2C
Application Areas
Embedded systems
PLCs
Servers
Gaming consoles
Industrial controls
Product Lifecycle
Status: Active
No indication of near discontinuation
Availability of direct replacements or upgrades (should be checked periodically)
Several Key Reasons to Choose This Product
Flexible I/O expansion for systems with limited GPIOs
Robust design applicable for industrial environments
High current output capability for driving LEDs or relays
Facilitate design scalability with bus expanders
Texas Instruments' reputation for reliability and quality
Supports rapid prototyping with industry-standard SOIC package