MAX7310ATE+

Overview

The MAX7310ATE+ is an 8-bit I/O port expander featuring a 2-wire SMBus/I2C-compatible serial interface. It operates within a supply voltage range of 2.3V to 5.5V and supports clock frequencies up to 400kHz. The device includes an input port register, output port register, polarity inversion register, configuration register, and bus timeout register. It provides 56 selectable slave ID addresses via three address pins and features low standby current of 1.7µA typical. The component is housed in a 16-pin Thin QFN package (4mm x 4mm) and is specified for operation from -40°C to +125°C.

Feature Summary

• Configurable 8-bit parallel I/O ports with individual direction control
• Bus timeout mechanism prevents lock-up by resetting the serial interface if SCL or SDA remains low for over 30ms
• Polarity inversion capability allows system masters to invert input data logic levels
• I/O0 pin functions as a 5V tolerant open-drain output

Applications

• Servers
• RAID Systems
• Industrial Control
• Medical Equipment
• Instrumentation and Test Measurement

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature rating. Ensure the procurement channel sources components directly from authorized distributors to guarantee authenticity. Cross-reference the part number with the latest datasheet revision to confirm compliance with current manufacturing specifications and RoHS directives before finalizing purchase orders.

Selection Notes

Select this component when an application requires expanding microcontroller GPIO lines using a standard I2C or SMBus interface. The device is suitable for systems needing configurable input/output directions and polarity inversion without external logic gates. Consider the 56 available slave addresses for multi-device bus configurations. Verify that the required operating voltage falls within the 2.3V to 5.5V range and that the thermal environment stays within the -40°C to +125°C specification.

Part Context

The MAX7310 belongs to the Maxim Integrated MAX73xx series of I/O expanders. It serves as a peripheral solution for adding parallel I/O capabilities to serial-bus-based systems. The device integrates internal registers for state management and includes a power-on reset feature to ensure defined initial states. It is designed to replace discrete logic solutions, reducing board space and component count in embedded designs.

Replacement Considerations

The MAX7310ATE-T is a non-lead-free variant of the same functional device. Other family members include the MAX7311, which adds interrupt functionality and hot-insertion protection. Verify pin compatibility and register mapping when substituting with other MAX73xx series parts.