MAX7300ATI

Overview

The MAX7300ATI is a serial I/O expander manufactured by Analog Devices Inc. under the Maxim Integrated brand, designed for systems requiring expanded digital input and output capabilities via standard communication interfaces. It operates within a supply voltage range of 2.5 V to 5.5 V and supports clock frequencies up to 400 kHz. The device features an interrupt output capability to facilitate efficient event handling in embedded applications. It is housed in a TSSOP-28 surface-mount package, suitable for space-constrained designs. The component functions as an interface IC, allowing microcontrollers to control multiple peripherals through a simplified two-wire serial connection.

Feature Summary

• Supports expansion of digital I/O lines through a standard two-wire serial interface compatible with I2C protocols.
• Includes an interrupt output pin that signals state changes on configured inputs or outputs to the host processor.
• Operates across a wide industrial temperature range from -40°C to +125°C for robust environmental performance.

Applications

• Embedded systems requiring additional GPIO pins for sensor interfacing or peripheral control
• Industrial automation controllers needing reliable I/O expansion in harsh environments
• Consumer electronics devices utilizing serial communication for compact board layouts

Procurement Notes

Verify the specific suffix ATI against official Analog Devices documentation to confirm package type and temperature grade. Ensure compatibility with existing PCB footprints for TSSOP-28 packages. Cross-reference ordering information with authorized distributors to confirm current availability status and lead times. Validate RoHS compliance requirements if applicable to your manufacturing standards before finalizing procurement decisions.

Selection Notes

Select this component when a system requires expanding digital I/O capacity using a minimal number of microcontroller pins. Consider the 2.5V to 5.5V operating range to ensure compatibility with the target logic levels. Evaluate the need for interrupt functionality versus polling methods based on system latency requirements. Confirm that the TSSOP-28 package dimensions fit within the mechanical constraints of the enclosure design.

Part Context

The MAX7300 series represents a family of serial I/O expanders designed to simplify system architecture by reducing pin count usage on main processors. This specific part belongs to the Maxim Integrated line, now part of Analog Devices, known for high-reliability interface solutions. The series offers various package options and port configurations to suit different density and form factor requirements in modern electronic designs.

Replacement Considerations

Check for direct cross-reference part numbers such as MAX7300AAT+T or MAX7300AAI+T depending on required I/O count and package style. Verify pin-to-pin compatibility and register mapping equivalence before substitution. Ensure that any alternative component meets the same electrical specifications and thermal ratings for seamless integration.