MAX7316ATE+T

Overview

The MAX7316ATE+T is a general-purpose I/O expander manufactured by Analog Devices / Maxim Integrated. It provides eight 5V-tolerant input/output ports, one output-only port, and one input-only port via a 400kHz 2-wire SMBus and I²C compatible serial interface. The device features integrated 8-bit PWM brightness control for LED outputs, with the first four bits managing global intensity. Powering up as inputs in the default state, the I/O ports are configurable by the master as an input or open-drain output.

Feature Summary

• Provides eight 5V-tolerant I/O ports plus dedicated input and output ports for flexible system integration.
• Integrates 8-bit PWM brightness control to simplify LED ramp-up and ramp-down operations.
• Supports 400kHz 2-wire SMBus and I²C compatible serial interfaces for microprocessor communication.

Applications

• Microprocessor and MCU peripheral expansion
• LED brightness control systems
• General-purpose I/O expansion in embedded devices

Procurement Notes

Verify the manufacturer part number MAX7316ATE+T against official Analog Devices documentation to confirm pinout and electrical specifications. Ensure compatibility with the target system's voltage levels and interface requirements before procurement.

Selection Notes

Select this component when 5V tolerance is required for I/O lines interfacing with mixed-voltage logic. The integrated PWM functionality makes it suitable for applications requiring direct LED intensity management without additional microcontroller overhead.

Part Context

This component belongs to the MAX7316 series of I/O expanders from Maxim Integrated, now part of Analog Devices. It is designed to extend the I/O capabilities of microcontrollers through standard serial interfaces, offering a compact solution for adding ports to space-constrained designs.

Replacement Considerations

Consult official Analog Devices documentation for verified substitute part numbers. Do not assume functional equivalence with other I/O expanders without verifying pinout, voltage tolerance, and interface compatibility.