PCA9698DGG/S911,51

I/o Expanders Overview

The PCA9698DGG/S911,51 is a 40-bit I2C-bus advanced I/O port expander manufactured by NXP Semiconductors. It 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. The device features 40 configurable I/O pins organized in five banks, with outputs capable of sourcing 10 mA and sinking 25 mA at 5 V. It includes an active LOW interrupt output, an Output Enable pin for tri-stating outputs, and an active LOW Reset input. The component is housed in a 56-lead TSSOP package and is specified for industrial operation between -40 °C and +85 °C.

I/o Expanders Feature Summary

• Supports Fast-mode Plus I2C-bus interface with frequencies up to 1 MHz
• Features 40 configurable I/O ports with programmable open-drain or totem-pole output structures
• Includes active LOW interrupt output and active LOW reset functionality
• Provides GPIO All Call address 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 against official documentation to confirm packaging details such as reel quantity or tape specifications. Confirm that the requested variant matches the required temperature range and package type. Ensure compatibility with existing system voltage levels and I2C bus constraints before finalizing procurement orders.

I/o Expanders Selection Notes

Select this component when a high-density I/O expansion solution is required over a standard I2C bus. Consider the Fm+ speed capability for faster data throughput compared to Standard-mode devices. Evaluate the need for the integrated interrupt and reset features versus external components. Verify that the 56-pin TSSOP package fits the available board space and thermal requirements.

I/o Expanders Part Context

This part belongs to the PCA9698 family of advanced I/O expanders designed for I2C applications. It represents a significant expansion in channel count compared to earlier 8-bit or 16-bit variants. The device integrates advanced features like polarity inversion and bank control registers, positioning it as a versatile peripheral for complex embedded systems requiring extensive digital I/O management.

I/o Expanders Replacement Considerations

Direct replacements include other parts from the PCA9698 series with different package options, such as the PCA9698BS in HVQFN56. Cross-vendor alternatives may exist but require careful verification of pinout compatibility, register mapping, and electrical characteristics to ensure seamless integration without hardware modifications.