PCA9675DB,118

I/o Expanders Overview

The PCA9675DB,118 is a remote 16-bit I/O expander for the Fast-mode Plus (Fm+) I2C-bus with interrupt functionality. It operates within a supply voltage range of 2.3 V to 5.5 V and features 5.5 V tolerant I/Os. The device provides latched outputs with a sink capability of 25 mA per pin and a total package sink capacity of 400 mA. It supports I2C bus speeds up to 1 MHz and includes an active LOW open-drain interrupt output. The component utilizes three address pins to configure one of 64 programmable slave addresses.

I/o Expanders Feature Summary

• Provides general purpose remote I/O expansion via the two-line bidirectional I2C-bus interface
• Features latched outputs with high current drive capability suitable for directly driving LEDs
• Includes an active LOW open-drain interrupt line to notify microcontrollers of port data changes
• Offers 64 programmable slave addresses using three dedicated address input pins

I/o Expanders Applications

• LED signs and displays
• Servers
• Industrial control systems
• Programmable Logic Controllers (PLCs)
• Instrumentation and test measurement equipment

I/o Expanders Procurement Notes

Verify the specific ordering suffix DB against official documentation to confirm the SSOP-24 package variant. Ensure the manufacturer designation matches NXP Semiconductors specifications. Confirm RoHS compliance status through the relevant product environmental declaration before finalizing procurement orders.

I/o Expanders Selection Notes

Select this component when a drop-in upgrade for PCF8575 devices is required with higher Fm+ bus speeds. Choose this part if the application demands increased I2C bus drive capabilities or higher total package sink capacity. Verify that the SSOP-24 package dimensions align with the target PCB layout constraints.

I/o Expanders Part Context

The PCA9675 series serves as a direct replacement for older PCF8575 architectures, offering enhanced performance metrics. This specific model belongs to the Fast-mode Plus family, designed to support higher clock frequencies and improved bus loading characteristics compared to standard I2C devices.

I/o Expanders Replacement Considerations

The PCA9675 is documented as a drop-in upgrade for the PCF8575. Verify pin compatibility and electrical parameter alignment before substitution.