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PCA9674BS from NXP,NXP Semiconductors

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PCA9674BS

Manufacturer: NXP

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

Partnumber Manufacturer Quantity Availability
PCA9674BS NXP 130 In Stock

Description and Introduction

Remote 8-bit I/O expander for Fm+ I虏C-bus with interrupt The **PCA9674BS** from NXP Semiconductors is a versatile **I²C-bus controlled 8-bit I/O expander** designed to enhance system flexibility in microcontroller-based applications. It features **8 quasi-bidirectional I/O pins**, allowing seamless integration with various digital peripherals while minimizing GPIO demands on the host controller.  

Operating with a **supply voltage range of 2.3V to 5.5V**, the PCA9674BS is compatible with both 3.3V and 5V systems. Its **I²C interface** supports standard (100 kHz) and fast (400 kHz) modes, ensuring efficient communication in diverse embedded environments.  

A key advantage of this device is its **low standby current consumption**, making it suitable for power-sensitive applications. The PCA9674BS also includes **interrupt output functionality**, enabling efficient event-driven processing by alerting the host controller of input state changes.  

With **industrial-grade robustness**, the PCA9674BS is ideal for applications such as industrial automation, consumer electronics, and IoT devices. Its compact **TSSOP16 package** ensures space-efficient PCB designs while maintaining reliable performance.  

Engineers benefit from its **simple configuration**, requiring minimal external components, and its compatibility with existing I²C protocols simplifies system integration. The PCA9674BS provides a cost-effective solution for expanding I/O capabilities in constrained or complex embedded systems.

Application Scenarios & Design Considerations

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

Alternative Part Number

  • PCF8574T --: I2C 8-bit quasi-bidirectional I/O expander with open-drain interrupt, functionally similar to PCA9674BS and widely available in SO package.
  • TCA9554APWR --: I2C/SMBus 8-bit I/O expander with interrupt output, drop-in functional replacement with similar voltage range and pinout.
  • MCP23008-E/SO --: I2C 8-bit I/O expander with interrupt and configurable pull-ups, suitable alternative when PCA9674BS is unavailable.

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