MAX7370ETG+T

Sensor And Detector Interfaces Overview

The MAX7370ETG+T is an I2C-interfaced peripheral providing microprocessors with management of up to 64 key switches, optional GPIOs, and PWM-controlled LED drivers. It features static matrix monitoring for low-EMI operation, autosleep/autowake modes (1µA typ), and a FIFO buffer for debounced key events. The device supports four open-drain LED driver pins (COL7–COL4) with 256-step PWM intensity control and constant-current levels up to 20mA. Operating supply voltage ranges from 1.62V to 3.6V, with a second logic supply (VLA) for level translation. It includes high ESD protection (±8kV contact, ±15kV air-gap) and operates over -40°C to +85°C in a 24-pin TQFN package.

Sensor And Detector Interfaces Feature Summary

• Monitors up to 64 keys using static matrix scanning for low-EMI operation
• Integrates high ESD protection meeting IEC 61000-4-2 standards
• Features four configurable LED driver pins with 256-step PWM intensity control
• Supports hot insertion and includes autosleep/autowake power management

Sensor And Detector Interfaces Applications

• Cell Phones
• Notebooks
• PDAs
• Handheld Games
• Portable Consumer Electronics

Sensor And Detector Interfaces 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 with authorized distributors to validate authenticity and traceability before procurement.

Sensor And Detector Interfaces Selection Notes

Select this component when an I2C interface is required for managing large key matrices alongside LED indicators. Consider the 1.62V to 3.6V operating range and the availability of a secondary logic supply for level shifting. Evaluate the need for static scanning to minimize electromagnetic interference in sensitive designs.

Sensor And Detector Interfaces Part Context

The MAX7370 belongs to Maxim Integrated's family of I/O expanders and keyboard controllers. It is designed for portable electronics requiring efficient key management and LED driving capabilities. The ETG+T suffix indicates a specific thermal and packaging variant within the MAX7370 series, optimized for surface-mount assembly.

Sensor And Detector Interfaces Replacement Considerations

Consult official Analog Devices documentation for verified substitute part numbers. Do not assume cross-compatibility with other I/O expanders without verifying pinout, voltage tolerances, and register configurations.