MAX7359ETG+TG104

Specialized Overview

The MAX7359ETG+ is a specialized interface controller designed for managing up to 64 key switches via an I2C-compatible 2-wire serial bus. Operating within a supply voltage range of +1.62V to +3.6V, the device utilizes static matrix monitoring to ensure low-EMI performance suitable for sensitive portable electronics. It features an internal FIFO queue capable of storing up to 16 debounced key events, configurable debounce times from 9ms to 40ms, and optional autorepeat functionality. The component operates over a temperature range of -40°C to +85°C and is housed in a 24-pin TQFN package with an exposed pad.

Specialized Feature Summary

• Static matrix monitoring architecture minimizes electromagnetic interference during key scanning operations.
• Integrated autosleep and autowake mechanisms significantly reduce power consumption by entering low-power states when idle.
• Hardware interrupt output supports flexible configuration based on FIFO event levels or programmable time periods.

Specialized Applications

• Cell phones
• PDAs
• Handheld games

Specialized Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm package type and environmental compliance. Ensure the selected variant matches the required operating temperature range and pin configuration for the target application design.

Specialized Selection Notes

Select this component for applications requiring low-noise key scanning in space-constrained portable devices. Evaluate the trade-off between available GPIO outputs and the number of supported keys if general-purpose outputs are needed alongside the key matrix.

Specialized Part Context

This part belongs to the MAX7359 series of 2-wire interfaced key switch controllers. It is manufactured by Analog Devices / Maxim Integrated and is specifically engineered for consumer electronics where low EMI and minimal current draw are critical design constraints.

Specialized Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with existing system architectures before considering alternative components.