MAX7314AEG+TG05

Overview

The MAX7314AEG+TG05 is an I2C-compatible serial peripheral providing 16 configurable I/O ports plus one output-only and one input-only port. It operates on a 2V to 3.6V supply with a 400kHz serial clock frequency. Each I/O port supports open-drain current-sinking outputs rated at 50mA and 5.5V, or logic inputs with transition detection. The device features built-in 8-bit PWM current control for LED intensity, supporting global and individual brightness adjustments. It includes two-phase LED blinking capabilities and supports hot insertion with high-impedance protection up to 6V on all pins during power-down.

Feature Summary

• Supports hot insertion with high-impedance pin protection during power-down
• Provides integrated 8-bit PWM current control for LED intensity management
• Features transition detection with interrupt output capability
• Includes two-phase LED blinking functionality

Applications

• LCD Backlights
• LED Status Indication
• Relay Drivers
• Keypad Backlights
• RGB LED Drivers

Procurement Notes

Verify the specific ordering suffix +TG05 against official Analog Devices documentation to confirm tape-and-reel packaging and quantity specifications. Ensure the QSOP package variant matches the required board layout constraints. Confirm RoHS compliance status directly from the manufacturer's latest datasheet revision before finalizing procurement orders.

Selection Notes

Select this component when an I2C interface is required for expanding GPIO resources in space-constrained designs. The 5.5V tolerant inputs and outputs allow interfacing with higher voltage logic levels while maintaining a low-voltage core supply. Consider the 4mm x 4mm thin QFN or QSOP package options based on available PCB real estate and thermal dissipation requirements for the target application environment.

Part Context

The MAX7314 belongs to the Maxim Integrated GPIO expansion family, designed to reduce microprocessor pin count. It integrates LED driving capabilities alongside standard digital I/O functions. This specific part number represents the A-grade temperature range version in a QSOP package, offering a compact solution for embedded systems requiring multiple controlled outputs with minimal external components.

Replacement Considerations

The MAX7313ATG+T is a related 16-port I/O expander but lacks the dedicated LED intensity control and specific interrupt configurations of the MAX7314. Verify register compatibility and pinout differences before substitution. No other direct public substitutes are confirmed in the provided documentation.