PCA9672D,518

I/o Expanders Overview

The PCA9672D,518 is an NXP Semiconductors remote I/O expander for the Fast-mode Plus (Fm+) I2C-bus. It provides eight quasi-bidirectional ports operating between 2.3 V and 5.5 V with 5.5 V tolerant I/Os. The device features a 1 MHz I2C interface, active LOW open-drain interrupt output, and hardware reset input. Latched outputs support 25 mA sink capability per pin and 200 mA total package sink current. It includes two hardware address pins allowing sixteen programmable slave addresses. Typical static current consumption is 2.5 µA. Operating temperature range is -40 °C to +85 °C. Package: SO16.

I/o Expanders Feature Summary

• Supports 1 MHz Fast-mode Plus I2C bus interface
• Features active LOW open-drain interrupt output for event notification
• Includes hardware reset input and internal power-on reset
• Provides latched outputs with 25 mA sink capability

I/o Expanders Applications

• LED signs and displays
• Servers
• Industrial control
• Medical equipment
• Cellular telephones

I/o Expanders Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm datasheet revision matches procurement requirements. Check RoHS compliance status as indicated in official documentation. Ensure storage conditions meet moisture sensitivity level specifications prior to assembly.

I/o Expanders Selection Notes

Select this component when system design requires Fm+ speed up to 1 MHz and interrupt-driven I/O expansion. Verify voltage compatibility within the 2.3 V to 5.5 V range. Consider package availability; the '518' suffix indicates reel packing. Evaluate thermal performance if driving multiple LEDs simultaneously due to the 200 mA total sink limit.

I/o Expanders Part Context

The PCA9672 belongs to NXP's remote I/O expander family designed for I2C communication. It serves as a functional upgrade over older PCF8574 series devices by offering higher bus speeds and interrupt capabilities. The device simplifies microcontroller interfacing by reducing pin count requirements while maintaining robust drive strength for peripheral control.

I/o Expanders Replacement Considerations

Direct replacements include PCA9672BS and PCA9672PW variants which share identical electrical characteristics but differ in packaging. Cross-family alternatives like PCA9673 offer similar functionality with different pin counts.