MAX7316ATE+

Overview

The MAX7316ATE+ is a 10-port I/O expander with LED intensity control, interrupt capability, and hot-insertion protection. It features eight bidirectional I/O ports (P0–P7), one output-only port (INT/O8), and one input-only port (BLINK). The device operates on a supply voltage of 2V to 3.6V and supports a 400kbps I2C/SMBus interface. Each I/O port can sink up to 50mA at an external voltage of 5.5V. PWM intensity control provides 8-bit resolution per port using global and individual settings. Standby current is typically 1.2µA. The component functions within a temperature range of -40°C to +125°C and utilizes a 16-pin Thin QFN package measuring 3mm x 3mm.

Feature Summary

• Supports hot insertion with high-impedance state for all pins during power-down
• Provides overall 8-bit PWM LED intensity control with global and individual steps
• Features transition detection with interrupt output for input monitoring
• Includes outputs rated for 5.5V open-drain operation independent of V+

Applications

• LCD backlights
• LED status indication
• Relay drivers
• Keypad backlights
• RGB LED drivers

Procurement Notes

Verify the specific ordering suffix ATE against official manufacturer documentation to confirm the package type and temperature rating. Ensure that the selected variant matches the required pin configuration and thermal characteristics for the intended application environment.

Selection Notes

Select this component when an I2C-compatible GPIO expander with high-current sinking capability is required. Consider the 50mA per port limit and the 5.5V external supply tolerance. Verify compatibility with the system's I2C bus speed and address configuration requirements before integration.

Part Context

The MAX7316 belongs to the Maxim Integrated I/O expander family designed for microprocessor peripheral expansion. It integrates serial interface logic, port configuration registers, and PWM controllers into a single compact package, serving as a bridge between low-voltage processors and higher-voltage loads.

Replacement Considerations

Consult official cross-reference lists for verified substitutes. Ensure any replacement maintains I2C compatibility, pinout alignment, and electrical ratings such as current sinking capacity and operating voltage ranges.