PCA9675BS,118

I/o Expanders Overview

The PCA9675BS,118 is a remote 16-bit I/O expander for the Fast-mode Plus (Fm+) I2C-bus with interrupt capability. 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 an I2C interface speed of up to 1 MHz and includes an active LOW open-drain interrupt output. Addressing is configured via three pins (AD0, AD1, AD2), allowing for 64 programmable slave addresses. The component is housed in an HVQFN24 package.

I/o Expanders Feature Summary

• Provides 16-bit quasi-bidirectional I/O expansion compatible with standard and Fast-mode I2C buses
• Features high drive capability with 25 mA sink per output and 400 mA total package sink capacity
• Includes an active LOW open-drain interrupt line for direct microcontroller notification
• Supports software reset and readable device ID functions via reserved I2C addresses

I/o Expanders Applications

• LED signs and displays
• Servers
• Industrial control systems
• Programmable logic controllers (PLCs)
• Cellular telephones
• Gaming machines
• Instrumentation and test measurement equipment

I/o Expanders Procurement Notes

Verify the specific ordering suffix

I/o Expanders Selection Notes

Select this component when a drop-in upgrade for PCF8575 is required with higher bus speeds and drive strength. Ensure the design accommodates the HVQFN24 package thermal pad requirements for proper heat dissipation. Verify that the application utilizes the 3 address pins to configure unique I2C addresses among multiple devices on the same bus.

I/o Expanders Part Context

The PCA9675BS,118 belongs to the PCA9675 family of remote I/O expanders manufactured by NXP Semiconductors. It is designed as a Fast-mode Plus compliant device, offering superior performance over standard I2C peripherals. The BS variant specifically denotes the HVQFN24 package configuration, distinguishing it from SO24, TSSOP24, or DHVQFN24 versions within the same functional family.

I/o Expanders Replacement Considerations

The PCA9675 serves as a direct drop-in upgrade for the PCF8575. When replacing legacy components, ensure the new design supports the increased 1 MHz I2C bus speed and the higher current drive capabilities provided by the PCA9675 architecture.