MAX7300AAI+T

Overview

The MAX7300AAI+T is a serial-interfaced I/O expansion peripheral providing 20 ports in a 28-pin SSOP package. It operates on a supply voltage of 2.5V to 5.5V with a maximum clock frequency of 400kHz. The device features open-drain outputs capable of sinking 10mA and sourcing 4.5mA, alongside Schmitt-trigger inputs with optional internal pullups. It supports an operating temperature range from -40°C to +125°C and includes logic transition detection for seven specific ports.

Feature Summary

• Configurable push-pull logic outputs or Schmitt-trigger logic inputs
• I2C-compatible 2-wire serial interface supporting up to 16 addresses
• Transition detection logic for monitoring port level changes

Applications

• White Goods
• Industrial Controllers
• System Monitoring

Procurement Notes

Verify the component against official Analog Devices documentation to confirm pinout compatibility and electrical specifications. Ensure the ordering suffix matches the required tape-and-reel packaging format. Cross-reference the manufacturer part number to validate authenticity before integration into production systems.

Selection Notes

Select this variant when a 28-pin SSOP footprint is required for space-constrained designs. Verify that the 20-port configuration meets system requirements, as other variants offer 28 ports. Confirm that the I2C bus speed and voltage levels align with the host microcontroller's capabilities.

Part Context

This component belongs to the MAX7300 series of I/O expanders manufactured by Analog Devices. It serves as a serial peripheral for microprocessors, offering flexible input/output configurations. The series includes variants with different pin counts and packages to accommodate various design constraints.

Replacement Considerations

The MAX7300AAX provides 28 ports in a 36-pin SSOP package. The MAX7300ATL offers 28 ports in a 40-pin TQFN package. These are functionally similar but require different PCB footprints and pin mappings.