PCA9698DGG,518

I/o Expanders Overview

The PCA9698DGG,518 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 supports Fast-mode Plus (Fm+) operation with a maximum clock frequency of 1 MHz and is compliant with Standard-mode (100 kHz) and Fast-mode (400 kHz). It operates within a supply voltage range of 2.3 V to 5.5 V. At 5 V, outputs can source 10 mA and sink 25 mA per pin, with a total package load capacity of 1 A. The component features an open-drain interrupt output, an active LOW Output Enable pin, and a hardware reset function. It is housed in a 56-lead TSSOP plastic thin shrink small outline package.

I/o Expanders Feature Summary

• Supports high-speed Fm+ I2C communication up to 1 MHz for dense bus operations.
• Configurable output structure allows selection between totem-pole and open-drain modes.
• Includes dedicated interrupt and SMBus Alert pins for monitoring logic level changes.
• Features GPIO All Call capability for simultaneous programming of multiple devices.

I/o Expanders Applications

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

I/o Expanders Procurement Notes

Verify the specific ordering suffix

I/o Expanders Selection Notes

Select this component when a microcontroller requires significant GPIO expansion via a serial interface. The PCA9698DGG,518 is suitable for designs needing 40 independent bidirectional pins controlled over I2C. Ensure the PCB layout accommodates the TSSOP56 package dimensions and that the system power supply meets the 2.3 V to 5.5 V operating range requirements.

I/o Expanders Part Context

This part belongs to the PCA9698 series of advanced I/O expanders from NXP. It is designed as a solution for systems where standard I/O ports are insufficient. The DGG suffix specifically denotes the TSSOP56 package variant, distinguishing it from other package options like the HVQFN56 available in the same family.

I/o Expanders Replacement Considerations

The PCA9698BS is a functional equivalent within the same family but utilizes an HVQFN56 package instead of TSSOP56. Verify pin compatibility and thermal requirements if substituting packages.