PCA9675PW,118

I/o Expanders Overview

The PCA9675PW,118 is a remote 16-bit I/O expander for Fast-mode Plus (Fm+) I2C-bus systems. It features a 1 MHz I2C interface and supports Standard and Fast modes. Operating on a supply voltage of 2.3 V to 5.5 V with 5.5 V tolerant I/Os, it provides 16 quasi-bidirectional pins that default to inputs at power-up. The device includes latched outputs capable of 25 mA sink current per pin and a total package sink capability of 400 mA. It offers an active LOW open-drain interrupt output, 64 programmable slave addresses via three address pins, and readable device ID information.

I/o Expanders Feature Summary

• Supports high-speed 1 MHz I2C communication with enhanced bus drive capabilities
• Provides direct LED driving through high-current latched outputs
• Enables flexible system addressing with 64 programmable slave configurations
• Features an active LOW interrupt line for efficient microcontroller notification

I/o Expanders Applications

• LED signs and displays
• Servers
• Industrial control systems
• Programmable Logic Controllers (PLCs)
• Cellular telephones

I/o Expanders Procurement Notes

Verify the specific ordering suffix matches the required packaging format. Confirm the component meets RoHS compliance standards for your region. Ensure the TSSOP24 package dimensions align with your PCB footprint requirements. Check for any specific environmental operating temperature constraints relative to your application design.

I/o Expanders Selection Notes

Select this component when upgrading from PCF8575 devices requiring higher bus speeds and drive strength. Consider the 400 mA total package sink capacity for applications driving multiple LEDs simultaneously. Verify that the 64 available addresses suffice for your multi-device I2C topology without conflicts.

I/o Expanders Part Context

This part belongs to the PCA9675 family of remote I/O expanders designed for Fm+ I2C-bus interfaces. It serves as a drop-in upgrade for legacy PCF8575 components, offering improved performance metrics including faster clock speeds and higher current handling capabilities within the same functional category.

I/o Expanders Replacement Considerations

PCA9675D, PCA9675BQ, PCA9675BS