The NXP PCF8575TSDB-T is a robust I/O expander that provides the flexibility of additional I/Os for microcontroller-based systems. This device is particularly useful in applications where I/O pins are at a premium, and expanding the number of input/output lines is essential. The PCF8575TSDB-T operates as an interface between the microcontroller and peripheral devices, offering an efficient solution for extending the number of available pins.

Key Features

• Expansive I/O Interface: The PCF8575TSDB-T features a 16-bit I/O expander, which allows for significant expansion of I/O capabilities without the need for additional microcontrollers.
• I2C-bus Interface: Utilizing the I2C-bus for communication, this device supports both 100 kHz (Standard-mode) and 400 kHz (Fast-mode) data transfer rates, ensuring compatibility with a wide range of microcontrollers and systems.
• Interrupt Output: An interrupt output pin (INT) is included, which can be activated whenever there is a change in the input state, allowing for efficient event-driven programming and reducing the need for constant polling by the host microcontroller.
• Low Standby Current: Energy efficiency is a key consideration, and the PCF8575TSDB-T boasts a low standby current, making it ideal for battery-powered and power-sensitive applications.
• Wide Operating Voltage: The device operates over a wide voltage range from 2.5V to 5.5V, accommodating various logic levels and ensuring compatibility with most microcontroller systems.

Applications

The versatility of the NXP PCF8575TSDB-T makes it suitable for a broad range of applications, including:

• Server infrastructure
• Industrial control systems
• Home automation
• Consumer electronics
• Automotive modules

Package and Availability

The PCF8575TSDB-T comes in a compact TSSOP24 package, which is designed for space-constrained applications. It is available for purchase from various distributors and directly from NXP Semiconductors.