NXP Semiconductors

PCA8574PW,118  

I/O Expanders

PCA8574PW,118 Description

The PCA8574PW,118 from NXP Semiconductors is an 8-bit I²C-bus I/O expander designed to enhance system flexibility by providing additional GPIO ports for microcontrollers or processors. Operating within a wide voltage range of 2.3V to 5.5V, it supports a clock frequency of 400 kHz, making it suitable for high-speed communication in embedded systems. Housed in a compact 16-TSSOP package with tape-and-reel (TR) packaging, this surface-mount device is ideal for space-constrained applications. It features an interrupt output for efficient event-driven designs and complies with ROHS3 and REACH environmental standards.

PCA8574PW,118 Features

• 8 I/O Ports: Configurable as inputs or outputs with individual polarity inversion.
• I²C Interface: Supports standard (100 kHz) and fast (400 kHz) modes for versatile integration.
• Low Power Consumption: Operates at 100µA (source) and 25mA (sink) for energy-efficient designs.
• Power-On Reset (POR): Ensures reliable initialization at power-up.
• Interrupt Output: Minimizes MCU polling by signaling input changes.
• Wide Voltage Range: Compatible with 2.3V to 5.5V systems, enabling mixed-voltage applications.
• Robust Packaging: MSL 1 (Unlimited) moisture sensitivity ensures durability in storage and assembly.

PCA8574PW,118 Applications

The PCA8574PW,118 excels in scenarios requiring additional I/O expansion with minimal footprint and power overhead:

• Industrial Control Systems: Expands GPIO for sensor arrays or actuator control.
• Consumer Electronics: Keypad scanning, LED driving, or display management in smart devices.
• Embedded Systems: Interface bridging for low-power MCUs with limited pins.
• Automotive Electronics: Non-critical functions like interior lighting or switch monitoring.
• IoT Devices: Enables scalable I/O for edge nodes without redesigning host controllers.

Conclusion of PCA8574PW,118

The PCA8574PW,118 stands out for its low-power operation, high-speed I²C interface, and compact form factor, making it a versatile solution for I/O expansion. Its interrupt capability and wide voltage range offer design flexibility, while NXP's reliability ensures robustness in demanding environments. Ideal for industrial, automotive, and IoT applications, this I/O expander balances performance and cost-effectiveness, addressing the growing need for scalable system interfaces.

PCA8574PW,118 Documents

Download datasheets and manufacturer documentation for PCA8574PW,118

Datasheets :

PCA8574(A)      

PCN Packaging :

All Dev Label Update 15/Dec/2020       Date Code Extended 18/Jul/2013      

Scheme-It :

PCA8574PW Scheme-It®      

HTML Datasheet :

PCA8574(A)      

Environmental Information :

NXP USA Inc REACH       NXP USA Inc RoHS Cert