Overview of PCA9539APW,118

The PCA9539APW,118 is a robust, low-voltage 16-bit General Purpose Input/Output (GPIO) expander with interrupt and weak pull-up resistors designed by NXP Semiconductors. This device is particularly suitable for low power applications due to its I²C-bus interface, which supports standard (100 kHz), fast (400 kHz), and fast-plus (1 MHz) I²C modes.

Key Features

• I²C Interface: The PCA9539APW,118 operates via an I²C-bus interface, allowing for easy integration into existing systems that require additional GPIOs. It supports multiple I²C bus speeds, making it versatile for various applications.
• Extended Temperature Range: This device is designed to perform reliably in a wide temperature range from -40°C to +85°C, making it suitable for industrial environments.
• Low Standby Current: With its low standby current, the PCA9539APW,118 is an excellent choice for power-sensitive applications.
• Interrupt Function: It features an interrupt output which can be connected to the interrupt logic of the microcontroller. This feature allows the microcontroller to be informed of input changes without the need to continuously poll the GPIO expander.
• Configurable Polarity: Input and output configuration registers, as well as a polarity inversion register, provide extensive flexibility. This allows the host to invert the PCA9539APW,118 polarity without the need for external components.
• 16-bit I/O Ports: It provides 16 I/O pins that can be configured as inputs or outputs, enabling the expansion of I/O capabilities in microcontroller-based systems.

Applications

The PCA9539APW,118 is ideal for a wide range of applications, including:

• Servers
• Personal Electronics
• Industrial Control
• Embedded Systems
• Automotive Networks

Package and Quality

The device is offered in a TSSOP-24 package, which is a space-saving and surface-mountable solution. It is also compatible with the RoHS directive, ensuring compliance with current environmental standards for electronic components.

In summary, the PCA9539APW,118 from NXP is a versatile, reliable, and efficient solution for system designers looking to expand the I/O capabilities of their microcontroller-based systems without incurring significant power or space penalties.