PCA9674BS,118

I/o Expanders Overview

The PCA9674BS,118 is an 8-bit 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, 30 mA SDA sink capability, and latched outputs with 25 mA sink drive for direct LED driving. Total package sink capability reaches 200 mA. It includes an active LOW open-drain interrupt output, 64 programmable slave addresses via three address pins, and readable device ID. Operating temperature ranges from -40 °C to +85 °C.

I/o Expanders Feature Summary

• Supports 1 MHz I2C bus communication for high-speed data transfer
• Provides 25 mA latched output sink current for direct LED driving
• Features active LOW open-drain interrupt output for microcontroller notification
• Includes software reset and readable device ID capabilities

I/o Expanders Applications

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

I/o Expanders Procurement Notes

Verify component authenticity through official NXP channels or authorized distributors. Confirm the specific HVQFN16 packaging and reel specifications match project requirements. Ensure compliance with RoHS directives and check for any end-of-life notices regarding this specific part number before finalizing procurement plans.

I/o Expanders Selection Notes

Select this component when high-speed Fm+ I2C communication at 1 MHz is required. Choose it for applications needing direct LED driving without external buffers due to its 25 mA sink capability. Consider it for designs requiring extensive addressability on a single bus line using the 64 available hardware-configurable addresses.

I/o Expanders Part Context

This component belongs to the PCA9674 family of remote I/O expanders designed for the I2C bus. It serves as a functional upgrade to older PCF8574 series devices by offering higher speed and drive strength. The BS suffix indicates the HVQFN16 plastic thermal enhanced very thin quad flat package variant.

I/o Expanders Replacement Considerations

The PCA9674A variants offer non-overlapping addresses but share identical electrical characteristics. Direct replacements include other PCA9674 series members in different packages such as SO16 or TSSOP16, provided pinout compatibility is verified.