MAX7313ATG+TGC1

Overview

The MAX7313ATG+TGC1 is a 16-port I/O expander with integrated LED intensity control, interrupt capability, and hot-insertion protection. It features an I2C-compatible serial interface operating at up to 400 kHz. The device supports a supply voltage range of 2V to 3.6V and operates within a temperature range of -40°C to +125°C. Each I/O port can be configured as an open-drain current-sinking output rated at 50mA and 5.5V, or as a logic input with transition detection. A 17th port serves as an interrupt output or general-purpose output. The component utilizes a 24-pin TQFN-EP package.

Feature Summary

• Integrated 8-bit PWM LED intensity control with global and individual settings
• Supports hot insertion with high-impedance inputs during power-down
• Transition detection with interrupt output for monitoring input changes
• Two-phase LED blinking with independent timing per output

Applications

• LCD Backlights
• LED Status Indication
• Portable Equipment
• Keypad Backlights
• RGB LED Drivers

Procurement Notes

Verify the specific suffix 'TGC1' against official Maxim Integrated documentation, as standard datasheets list 'ATG+' for the TQFN-EP variant. Confirm that the ordering suffix does not alter electrical characteristics or pinout. Ensure compliance with RoHS standards indicated by the '+' designation. Cross-reference with authorized distributors to validate availability and authenticity of this specific marking code.

Selection Notes

Select the MAX7313 when 16 configurable I/O ports are required alongside direct LED driving capabilities. The device is suitable for applications needing hardware-level LED dimming via PWM without microprocessor intervention. Consider its compatibility with PCA9535 and PCA9555 if pin-swapping is necessary. Verify that the 50mA sink current per port meets load requirements and that the 2V to 3.6V supply range aligns with system power rails.

Part Context

The MAX7313 belongs to the Maxim Integrated I/O expander family, designed to extend microprocessor I/O capabilities via serial interfaces. It shares pin and software compatibility with devices like the MAX7311, PCA9535, and PCA9555. This integration allows for simplified design reuse across different projects requiring GPIO expansion and peripheral control through standard I2C protocols.

Replacement Considerations

The MAX7313 is pin and software compatible with the MAX7311, PCA9535, and PCA9555. These parts may serve as direct replacements in designs where specific LED intensity control features are not utilized. Verify register mapping and electrical specifications before substitution.