PCA9698BS,118

I/o Expanders Overview

The PCA9698BS,118 is a 40-bit I2C-bus advanced I/O port expander manufactured by NXP Semiconductors. It provides parallel input/output expansion organized in five banks of eight I/Os each. The device operates within a supply voltage range of 2.3 V to 5.5 V and supports Fast-mode Plus (Fm+) serial interfaces up to 1 MHz. It features configurable open-drain or totem-pole outputs with 25 mA sink and 10 mA source capabilities at 5 V. The component includes an active LOW interrupt output, an Output Enable pin for three-stating outputs, and hardware reset functionality. It utilizes a 56-pin HVQFN package and functions across an industrial temperature range from -40 °C to +85 °C.

I/o Expanders Feature Summary

• Supports high-speed Fm+ I2C communication up to 1 MHz with robust bus operation.
• Provides 40 individually configurable bidirectional I/O pins organized into five banks.
• Features programmable output structures allowing selection between open-drain and totem-pole configurations.
• Includes dedicated interrupt management with masking capabilities and polarity inversion registers.

I/o Expanders Applications

• Servers
• RAID systems
• Industrial control
• Medical equipment
• PLCs

I/o Expanders Procurement Notes

Verify the specific ordering suffix '118' against current manufacturer documentation to confirm packaging details and availability status. Confirm that the HVQFN56 package variant matches the required thermal pad soldering specifications for proper heat dissipation and electrical grounding on the target PCB layout.

I/o Expanders Selection Notes

Select this component when a microcontroller requires significant GPIO expansion via a standard I2C interface. Ensure the system design accommodates the 56-pin HVQFN footprint and provides adequate thermal relief for the exposed pad. Verify that the host controller supports the required I2C clock speeds and address configuration logic using the three external address pins.

I/o Expanders Part Context

This part belongs to the PCA9698 family of advanced I/O expanders designed for Fast-mode Plus applications. It serves as a solution for expanding digital I/O resources in embedded systems where standard GPIO counts are insufficient. The BS suffix indicates the HVQFN56 package variant, distinguishing it from the TSSOP56 version available under different ordering codes.

I/o Expanders Replacement Considerations

Check for updated revisions of the PCA9698 series or alternative NXP I/O expanders with similar pin counts and Fm+ support. Verify compatibility with existing firmware register maps if substituting with other 40-bit expanders.