MAX7329AWE+T

I/o Expanders Overview

The MAX7329AWE+T is an I²C port expander featuring eight open-drain input/output ports. It operates on a 2.5V to 5.5V supply with a maximum standby current of 10μA. The device supports a 100kHz serial interface and includes an open-drain interrupt output for transition detection. It utilizes three hardware address pins (AD0-AD2) to select one of eight slave addresses within the 0x38 to 0x3F range. The component is housed in a 16-pin Wide SO package and functions across a temperature range of -40°C to +125°C.

I/o Expanders Feature Summary

• Eight open-drain I/O ports configurable as logic inputs or outputs
• Continuous state change monitoring with open-drain interrupt alerting
• Hardware-selectable slave addressing for multi-device bus configurations

I/o Expanders Applications

• RAID controllers
• Servers
• Notebooks
• Industrial systems

I/o Expanders Procurement Notes

Verify that the ordering suffix 'T' corresponds to the tape-and-reel packaging format specified by Analog Devices/Maxim Integrated. Confirm the specific RoHS compliance status associated with the '+' designation. Ensure the wide SOIC-16 footprint matches the design requirements before finalizing procurement orders.

I/o Expanders Selection Notes

Select this part when using the MAX7329-specific slave address range (0x38–0x3F). It serves as a second source for the PCF8574A. Choose the Wide SO package for surface-mount assembly. Verify compatibility with the system's I²C voltage levels, as the SDA/SCL lines are 5.5V tolerant.

I/o Expanders Part Context

This component belongs to the MAX7328/MAX7329 family of I²C port expanders. The MAX7329 variant is distinguished from the MAX7328 solely by its unique slave ID address range. Both devices share identical pinouts, electrical characteristics, and functional behaviors, allowing them to coexist on the same I²C bus without conflict.

I/o Expanders Replacement Considerations

The PCF8574A is documented as a second source equivalent. Verify that the replacement device supports the required 5.5V tolerance on the I/O and interrupt lines. Check if the substitute offers comparable transition detection capabilities and interrupt output functionality.