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PCA9674ABS from NXP,NXP Semiconductors

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PCA9674ABS

Manufacturer: NXP

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

Partnumber Manufacturer Quantity Availability
PCA9674ABS NXP 516 In Stock

Description and Introduction

Remote 8-bit I/O expander for Fm+ I虏C-bus with interrupt The **PCA9674ABS** from NXP Semiconductors is a versatile 8-bit I²C-bus and SMBus I/O expander designed for applications requiring additional GPIO pins. It serves as an interface between a microcontroller and peripheral devices, enabling efficient control of multiple inputs and outputs via the I²C protocol.  

Featuring a wide voltage range (1.65V to 5.5V), the PCA9674ABS is compatible with both low-voltage and standard logic levels, making it suitable for mixed-voltage systems. Its open-drain outputs support interrupt generation, allowing the host controller to respond promptly to signal changes.  

The device includes internal pull-up resistors, reducing external component count and simplifying PCB design. With a 400 kHz fast-mode I²C interface, it ensures reliable communication in high-speed applications. The PCA9674ABS also offers software-configurable registers for input/output direction and polarity inversion, enhancing flexibility in system integration.  

Ideal for industrial control, consumer electronics, and embedded systems, the PCA9674ABS provides a cost-effective solution for expanding I/O capabilities while maintaining low power consumption. Its compact package and robust performance make it a reliable choice for designers seeking efficient signal management in space-constrained environments.

Application Scenarios & Design Considerations

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

Alternative Part Number

  • PCF8574APW --: I2C 8-bit I/O expander with open-drain outputs, functionally similar to PCA9674 and widely available in TSSOP package.
  • TCA9554APW --: Pin-compatible I2C/SMBus 8-bit I/O expander with interrupt output, suitable drop-in replacement in most designs.
  • MCP23008-E/SS --: I2C 8-bit I/O expander with configurable pull-ups and interrupt, alternative from a different vendor for similar applications.

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