PCA9674D,512

I/o Expanders Overview

The PCA9674D,512 is an 8-bit remote I/O expander for the Fast-mode Plus (Fm+) I2C-bus. It operates between 2.3 V and 5.5 V with 5.5 V tolerant I/Os. The device features a 1 MHz I2C interface with 30 mA SDA sink capability, supporting up to 64 programmable slave addresses via three hardware pins. Latched outputs provide 25 mA sink current per pin and a total package sink capability of 200 mA. Typical static current consumption is 4.5 µA. It includes an active LOW open-drain interrupt output and supports software reset.

I/o Expanders Feature Summary

• Fast-mode Plus I2C interface with high drive capability
• Latched outputs for direct LED driving
• Active LOW open-drain interrupt output
• Software reset and readable device ID

I/o Expanders Applications

• LED signs and displays
• Servers
• Industrial control
• Medical equipment
• PLCs

I/o Expanders Procurement Notes

Verify the specific ordering suffix

I/o Expanders Selection Notes

Select this component when system design requires high-speed I2C communication at 1 MHz and significant bus drive strength without external buffers. The 25 mA per-pin sink capability allows direct LED interfacing. Ensure address configuration using AD0-AD2 pins avoids reserved I2C addresses like General Call or Device ID to prevent communication conflicts.

I/o Expanders Part Context

This part belongs to the PCA9674 family, serving as a general-purpose remote I/O expansion solution. It functions as a successor to older PCF8574 series devices, offering improved speed and drive capabilities while maintaining compatibility with standard I2C protocols.

I/o Expanders Replacement Considerations

PCA9674BS, PCA9674PW, PCA9674AD, PCA9674APW.