PCA9672BS,118

I/o Expanders Overview

The PCA9672BS,118 is an 8-bit remote I/O expander for the Fast-mode Plus (Fm+) I2C-bus, featuring interrupt and reset capabilities. It operates within a supply voltage range of 2.3 V to 5.5 V with 5.5 V tolerant I/Os. The device provides eight quasi-bidirectional ports that default to inputs at power-up, offering latched outputs with 25 mA sink capability per pin and a total package sink capability of 200 mA. It supports sixteen programmable slave addresses using two address pins and includes an active LOW open-drain interrupt output and an active LOW hardware reset input. Typical static standby current consumption is 2.5 µA.

I/o Expanders Feature Summary

• Supports high-speed 1 MHz I2C-bus interface for efficient data transfer
• Provides hardware interrupt output to notify microcontrollers of input state changes without polling
• Includes hardware reset input and software reset functionality for system reliability
• Features low standby current consumption suitable for mobile applications

I/o Expanders Applications

• LED signs and displays
• Servers
• Keypads
• Industrial control systems
• Medical equipment

I/o Expanders Procurement Notes

Verify component authenticity through official NXP Semiconductors channels or authorized distributors. Confirm the part number suffix matches the HVQFN16 package specification. Check for RoHS compliance documentation. Ensure storage conditions meet semiconductor handling standards to prevent moisture damage prior to soldering.

I/o Expanders Selection Notes

Select this component when designing systems requiring remote I/O expansion over an I2C bus with high-speed communication needs. It is appropriate for applications demanding hardware interrupt signaling and direct LED driving capabilities. Consider the operating temperature range and voltage tolerance requirements against the specific environmental conditions of the target application.

I/o Expanders Part Context

This component belongs to the PCA9672 family of I/O expanders designed by NXP Semiconductors. It is specifically engineered for Fm+ I2C-bus applications, distinguishing itself from standard I2C devices through its higher clock frequency support. The BS suffix indicates the HVQFN16 package variant, which is optimized for surface-mount assembly in compact electronic designs.

I/o Expanders Replacement Considerations

Direct replacements include other variants within the PCA9672 family such as PCA9672D or PCA9672PW, provided the package type matches the PCB footprint. Verify electrical compatibility regarding voltage levels and current drive capabilities before substituting.