MAX7320AEE+T

Overview

The MAX7320AEE+T is an I2C port expander featuring eight push-pull output ports. It operates within a supply voltage range of +1.71V to +5.5V and supports serial clock frequencies up to 400kHz. The device utilizes two address inputs (AD0, AD2) to configure one of sixteen slave addresses. Output power-up logic states are selectable in groups of four based on these address connections. It includes an active-low RST input to clear the serial interface and terminates ongoing transactions. The component is specified for operation across an extended temperature range from -40°C to +125°C.

Feature Summary

• Eight push-pull output ports with configurable power-up default states
• I2C-compatible serial interface supporting up to 400kHz clock frequency
• Sixteen selectable slave addresses via AD0 and AD2 inputs
• Active-low reset input to terminate serial communication

Applications

• Cell Phones/PDAs
• Satellite Radios
• Notebooks
• RAID Systems
• Servers

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing this part number. Confirm that the ordering information matches the required package type, as the MAX7320 family also offers QSOP configurations without the reel suffix. Ensure compliance with RoHS standards indicated by the '+' designation in the manufacturer's documentation before finalizing procurement orders.

Selection Notes

Select the MAX7320AEE+T when eight push-pull outputs are required rather than open-drain or input-only configurations. This model is suitable for applications needing selectable power-up states determined by hardware address pins. Consider the 16-pin QSOP package for standard surface-mount assembly processes. Verify that the system design accommodates the specific I2C address range assigned to this device family.

Part Context

The MAX7320 belongs to a family of pin-compatible port expanders including the MAX7319 through MAX7329. Unlike other members that offer open-drain I/O or interrupt masks, the MAX7320 provides exclusively push-pull outputs. It shares physical dimensions with devices like the MAX6965 but differs in software compatibility and functional capabilities. This distinction allows designers to choose between different output drive characteristics while maintaining footprint consistency.

Replacement Considerations

The MAX7328 and MAX7329 are documented as second sources to PCF8574 and PCF8574A respectively, not direct replacements for the MAX7320. Due to differences in output structure (open-drain vs. push-pull) and I2C address ranges, substitute components require careful verification of electrical characteristics and software register mapping.