MAX7324AEG+

Overview

The MAX7324AEG+ is a pin-compatible I2C port expander featuring eight push-pull outputs and eight inputs. It operates from a +1.71V to +5.5V supply with a maximum serial clock frequency of 400kHz. The device includes latching transition detection for inputs, selectable internal pullups, and overvoltage protection up to +6V on input pins. It supports sixteen unique slave addresses via AD0 and AD2 inputs. The component is specified for the -40°C to +125°C automotive temperature range and is housed in a 24-pin QSOP package.

Feature Summary

• Eight push-pull outputs rated at 20mA capable of driving LEDs
• Eight input ports with maskable, latching transition detection
• Input ports feature overvoltage protection to +6V
• Low standby current of 0.6µA when interface is idle

Applications

• Cell Phones
• Servers
• Notebooks
• SAN/NAS Systems
• Satellite Radio

Procurement Notes

Verify the ordering suffix 'AEG+' indicates a lead-free and RoHS-compliant package configuration. Confirm the specific package type matches the required board layout constraints. Ensure the supplier provides traceability documentation consistent with automotive-grade specifications. Validate that the component date code aligns with project requirements.

Selection Notes

Select this part when an application requires both high-current push-pull outputs and monitored inputs within a single I2C address space. Compare against the MAX7325, MAX7326, and MAX7327 if different output/input configurations are needed. Verify that the available 16 slave addresses fit the system bus topology. Consider the exposed pad requirement for thermal management in TQFN variants.

Part Context

The MAX7324 belongs to a family of pin-compatible port expanders including the MAX7325, MAX7326, and MAX7327. These devices share identical pinouts but offer varying combinations of open-drain I/O, push-pull outputs, and input-only ports. This family integrates the functionality of the MAX7320 combined with other specific port configurations.

Replacement Considerations

Pin-compatible alternatives include the MAX7325, MAX7326, and MAX7327. Verify that the alternative's specific mix of open-drain and push-pull ports meets the circuit requirements. Check if the replacement maintains the same interrupt mask and transition detection capabilities.