MAX1609EEE

Overview

The MAX1609EEE+ is an octal, SMBus-to-parallel I/O expander manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 2.7 V to 5.5 V and supports a maximum clock frequency of 100 kHz via I2C, Serial, or SMBus interfaces. The device provides eight general-purpose I/O pins with open-drain outputs and includes an interrupt output capability. It is housed in a 16-pin QSOP package, suitable for surface-mount installation. The component functions across a temperature range from -40°C to +85°C, consuming a typical operating current of 7 µA.

Feature Summary

• Provides eight parallel I/O lines expandable through serial communication protocols
• Supports standard I2C and SMBus interface compatibility for system integration
• Includes dedicated interrupt output functionality for efficient event handling

Applications

• Portable consumer electronics requiring low-power I/O expansion
• Industrial control systems utilizing SMBus communication
• Embedded devices needing additional digital input/output capabilities

Procurement Notes

Verify the specific suffix designation when ordering, as it may indicate packaging variations such as tube or cut tape formats. Confirm RoHS compliance status directly with the manufacturer or authorized distributors. Check current availability status, as this component may be subject to limited supply or discontinuation notices. Ensure the selected variant matches the required package type for your PCB layout constraints.

Selection Notes

Select this component when an application requires expanding microcontroller I/O lines using standard serial buses. Ensure the system voltage aligns with the 2.7 V to 5.5 V operating range. Consider the 100 kHz clock speed limit for bus timing requirements. Verify that the QSOP-16 package dimensions fit the available board space. Evaluate power consumption needs against the 7 µA operating current specification.

Part Context

This part belongs to the MAX1609 series of I/O expanders, designed for low-voltage applications. It shares functional similarities with other octal expanders in the Maxim portfolio but is distinct in its specific interface support and package configuration. The device serves as a bridge between serial controllers and parallel peripheral devices.

Replacement Considerations

The MAX1608EEE+ is a closely related variant within the same family, offering similar octal I/O expansion capabilities. Verify pinout compatibility and electrical specifications before substitution. Other members of the MAX1609 series may offer different package options or slight parameter variations.