MAX7317AEE

Overview

The MAX7317AEE is a 10-port serial I/O expander manufactured by Analog Devices Inc./Maxim Integrated. It interfaces with microprocessors via a high-speed, 26 MHz SPI-compatible serial bus. The device operates within a supply voltage range of 2.25 V to 3.6 V and features open-drain outputs capable of driving 20 mA loads. Each port supports hot-plugging and includes overvoltage protection up to 7 V on inputs. The component is housed in a 16-pin SSOP package and functions reliably across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Supports hot-plugging with high-impedance state during power-off conditions
• Provides overvoltage tolerance on I/O ports for robust system integration
• Enables flexible configuration of individual ports as inputs or outputs

Applications

• Automotive electronic systems
• Industrial controllers
• Portable consumer devices
• White home appliances

Procurement Notes

Verify the specific suffix 'AEE' against official manufacturer documentation to confirm the exact package type and temperature grade. Ensure compatibility with existing PCB footprints and thermal requirements before procurement. Cross-reference the full part number with authorized distributors to confirm current availability status and lead times.

Selection Notes

Select this component when a microprocessor requires additional general-purpose I/O lines via a standard serial interface. It is suitable for applications needing low standby current and support for hot-swappable peripherals. Verify that the required I/O voltage levels align with the 2.25 V to 3.6 V operating range and that the 26 MHz clock speed meets system timing constraints.

Part Context

The MAX7317 series belongs to Maxim Integrated's family of serial I/O expanders designed to reduce pin count on host processors. These devices are commonly used in embedded systems where space is limited and multiple control lines are necessary. The MAX7317AEE specifically denotes a variant within this series, maintaining core functionality while differing in packaging or environmental specifications.

Replacement Considerations

Check for direct cross-references such as MAX7317ATE or other suffixes indicating different packages like TQFN. Ensure any substitute maintains SPI compatibility and identical I/O voltage tolerances.