PCA9698DGG,512

I/o Expanders Overview

The PCA9698DGG,512 is a 40-bit I/O expander from NXP Semiconductors designed for I2C-bus applications. It features Fast-mode Plus (Fm+) serial interface supporting up to 1 MHz clock frequency and operates within a supply voltage range of 2.3 V to 5.5 V. The device provides 40 configurable input/output pins organized in five banks of eight. Outputs are capable of sourcing 10 mA and sinking 25 mA per pin, with a total package load capacity of 1 A. It includes an open-drain interrupt output, active LOW reset input, and an Output Enable pin that can three-state outputs. The component is housed in a 56-pin TSSOP package and is specified for industrial temperature ranges from -40 °C to +85 °C.

I/o Expanders Feature Summary

• Supports high-speed Fm+ I2C communication up to 1 MHz alongside Standard and Fast modes
• Configurable 40-bit I/O ports with programmable open-drain or totem-pole output structures
• Includes dedicated interrupt, reset, and output enable control pins for system management

I/o Expanders Applications

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

I/o Expanders Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm package type and tape-and-reel specifications. Ensure the selected variant matches the required thermal and electrical characteristics for the target PCB layout. Cross-reference the part number with official distributor catalogs to validate current availability status and compliance certifications prior to procurement.

I/o Expanders Selection Notes

Select this component when a high-density GPIO expansion solution is required over a standard I2C bus. Consider the 1 MHz Fm+ capability for bandwidth-intensive applications requiring rapid state updates across multiple banks. Evaluate the 56-pin TSSOP footprint constraints and ensure adequate thermal dissipation paths are available on the printed circuit board design.

I/o Expanders Part Context

This component belongs to the PCA9698 family of advanced I/O expanders. It serves as a parallel-to-serial bridge, allowing microcontrollers with limited native GPIO resources to control extensive peripheral arrays. The device integrates address selection pins to support up to 64 unique slave addresses on a single bus segment.

I/o Expanders Replacement Considerations

PCA9698DGG,518