MAX7300AAX+T

Overview

The MAX7300AAX+T is a serial-interfaced I/O expansion peripheral providing up to 28 ports. It operates on a 2.5V to 5.5V supply with a maximum clock frequency of 400 kHz and functions within a temperature range of -40°C to +125°C. The device features an I2C-compatible interface, interrupt output capability, and supports SMD/SMT installation in a 36-pin SSOP package. Output current capabilities include sourcing 4.5mA and sinking 10mA per port.

Feature Summary

• Configurable push-pull logic outputs or Schmitt-trigger inputs with optional internal pullups
• Transition detection logic for seven specific ports generating interrupts upon level changes
• Four-level address logic enabling sixteen unique I2C addresses via two select pins

Applications

• White Goods
• Industrial Controllers
• System Monitoring

Procurement Notes

Verify the datasheet revision and RoHS compliance status before procurement. Confirm that the tape-and-reel packaging matches the 'T' suffix requirement. Ensure the ordering suffix aligns with lead-free specifications if required by the manufacturing process.

Selection Notes

Select this component when a microprocessor requires expanded GPIO through a standard I2C bus. The 36-pin SSOP package accommodates 28 ports, suitable for designs needing high-density I/O expansion without complex external decoding circuitry.

Part Context

This part belongs to the MAX7300 series of compact, serial-interfaced I/O expanders. It serves as a peripheral for microprocessors, offering configurable logic inputs and outputs controlled via a 2-wire serial interface, distinct from SPI-based alternatives like the MAX7301.

Replacement Considerations

Refer to the MAX7301 data sheet for an SPI-interfaced version. For pin-compatible port expanders with additional LED drive capability, refer to the MAX6956 data sheet.