PCA9674TS,112

I/o Expanders Overview

The PCA9674TS,112 is an NXP Semiconductors remote 8-bit I/O expander for the Fast-mode Plus (Fm+) I2C-bus. It provides eight quasi-bidirectional ports and operates with a supply voltage range of 2.3 V to 5.5 V. The device features a 1 MHz I2C interface with SDA sink capability of 30 mA. Latched outputs support 25 mA sink current per pin and a total package sink capability of 200 mA. It includes an active LOW open-drain interrupt output and allows up to 64 programmable slave addresses via three hardware address pins.

I/o Expanders Feature Summary

• Supports 1 MHz I2C bus communication for high-speed data transfer
• Provides latched outputs with 25 mA sink capability for direct LED driving
• Features an active LOW open-drain interrupt output for efficient microcontroller notification
• Allows configuration of up to 64 unique slave addresses using three hardware pins

I/o Expanders Applications

• LED signs and displays
• Industrial control systems
• Programmable logic controllers (PLCs)
• Medical equipment
• Instrumentation and test measurement

I/o Expanders Procurement Notes

Verify the component against official datasheets to confirm specifications and authenticity. Ensure the ordering suffix matches the required packaging format. Check for end-of-life status or availability constraints before finalizing procurement plans.

I/o Expanders Selection Notes

Select this component when expanding I/O capacity over an I2C bus with high-speed requirements. Consider the 2.3 V to 5.5 V operating range and 25 mA output drive capability. Verify address pin configurations to ensure sufficient unique addresses for the system design.

I/o Expanders Part Context

This part belongs to the PCA9674 family of remote I/O expanders designed for Fm+ I2C buses. It serves as a functional upgrade to older PCF8574 devices, offering higher bus speeds and drive capabilities. The TS suffix indicates the TSSOP16 package variant.

I/o Expanders Replacement Considerations

PCA9674PW,112 offers the same functionality in a TSSOP16 tube package. PCA9674ABS-T provides the same electrical characteristics in an HVQFN16 reel package.