MAX7314AEG+

Overview

The MAX7314AEG+ is an I2C-compatible serial peripheral providing 16 configurable I/O ports plus one output-only and one input-only port. It supports open-drain outputs rated at 50mA with external supplies up to 5.5V, independent of the 2V to 3.6V device supply. Built-in 8-bit PWM current control allows global or individual LED intensity adjustment across 16 steps per level. The device features transition detection with interrupt output, hot-insertion protection, and operates within a -40°C to +125°C temperature range in a 24-pin QSOP package.

Feature Summary

• Configurable open-drain I/O ports supporting 5.5V external loads
• Integrated 8-bit PWM for LED intensity and blink control
• Transition detection with interrupt generation capability
• Hot-insertion protection with high-impedance power-down state

Applications

• LCD Backlights
• LED Status Indication
• Relay Drivers
• Keypad Backlights
• RGB LED Drivers

Procurement Notes

Verify the ordering suffix AEG corresponds to the 24-pin QSOP package variant. Confirm the temperature grade matches the required operational range. Ensure the component is sourced from authorized distributors to guarantee authenticity. Check for specific tape-and-reel or tube packaging requirements if applicable to the assembly process.

Selection Notes

Select this component when an I2C interface is required for expanding GPIO capabilities alongside direct LED driving. The 50mA sink capability eliminates the need for external transistors in many low-power applications. Verify that the system voltage aligns with the 2V to 3.6V operating range while ensuring external loads do not exceed 5.5V.

Part Context

This part belongs to the MAX731x family of I/O expanders designed by Maxim Integrated. It shares functional similarities with the MAX7313 and MAX7315 but offers specific pin counts and package options. The AEG suffix denotes the commercial/industrial temperature range and QSOP physical form factor.

Replacement Considerations

Direct substitutes include other MAX731x variants such as the MAX7313 or MAX7315, provided pin compatibility and register maps are verified. Cross-vendor replacements require careful evaluation of I2C timing parameters and electrical characteristics.