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PCA9674APW from NXP,NXP Semiconductors

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PCA9674APW

Manufacturer: NXP

Remote 8-bit I/O expander for Fm+ I虏C-bus with interrupt

Partnumber Manufacturer Quantity Availability
PCA9674APW NXP 2818 In Stock

Description and Introduction

Remote 8-bit I/O expander for Fm+ I虏C-bus with interrupt The **PCA9674APW** from NXP Semiconductors is a versatile 8-bit I²C-bus and SMBus I/O expander designed to simplify system design by reducing the number of GPIOs required from a host microcontroller. This CMOS-based device provides general-purpose remote I/O expansion via the I²C-bus interface, supporting clock frequencies up to 400 kHz.  

Featuring eight quasi-bidirectional I/O pins, the PCA9674APW allows for flexible configuration, with each pin capable of operating as an input or output without requiring a direction control register. The device includes internal pull-up resistors, eliminating the need for external components in many applications. Its interrupt output pin signals changes on the input ports, enabling efficient event-driven system responses.  

With a wide operating voltage range (2.3V to 5.5V), the PCA9674APW is suitable for interfacing with both 3.3V and 5V systems. It is commonly used in industrial control, consumer electronics, and embedded systems where GPIO expansion is needed. The device is offered in a TSSOP16 package, ensuring compact integration in space-constrained designs.  

The PCA9674APW is a reliable solution for designers seeking efficient I²C-based I/O expansion while maintaining low power consumption and straightforward implementation.

Application Scenarios & Design Considerations

Remote 8-bit I/O expander for Fm+ I虏C-bus with interrupt

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