Manufacturer Part Number
PCF8574APW
Manufacturer
Texas Instruments
Introduction
The PCF8574APW is an 8-bit I/O expander with an I2C interface, designed for system engagement and minimization of microcontroller I/O pin usage.
Product Features and Performance
8-bit remote I/O expander
I2C bus interface
Interrupt output function
Power-on reset (POR)
Push-Pull output type
Able to source and sink currents of 1mA and 25mA respectively
Product Advantages
Reduces microcontroller I/O pin usage significantly
Supports multiple devices on the same bus (I2C)
Ensures system reliability with Power-on Reset feature
Provided with an interrupt output to manage input changes
Key Technical Parameters
Number of I/O: 8
Interface: I2C
Interrupt Output: Yes
Clock Frequency: 100 kHz
Voltage - Supply: 2.5V ~ 6V
Operating Temperature: -40°C ~ 85°C
Current - Output Source/Sink: 1mA, 25mA
Mounting Type: Surface Mount
Package / Case: 20-TSSOP (0.173", 4.40mm Width)
Quality and Safety Features
Robust operating temperature range from -40°C to 85°C
Compliant with the I2C bus standard
Compatibility
Compatible with any microcontroller that supports I2C interface
Application Areas
Used in industrial control systems
Consumer electronics
Server farms
Automation systems
Product Lifecycle
Currently Obsolete
Potential recommendations for replacements or upgrades may need to be discussed with Texas Instruments
Several Key Reasons to Choose This Product
Flexible source and sink current capabilities
I2C Interface allows communication on the same bus which reduces wiring complexity
Interrupt feature aids in effective event management
Robust against extreme temperatures, suitable for various environments
Easy integration into existing setups due to common package and interface
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