MAX71315CECQ+

Overview

The MAX71315CECQ+ is an I2C/SMBus-compatible serial peripheral providing eight configurable I/O ports with integrated LED intensity control and interrupt capabilities. It operates within a voltage range of 2V to 3.6V, featuring outputs rated at 50mA maximum port current and tolerant to 5.5V. The device includes an 8-bit PWM controller for LED brightness adjustment, supporting global and individual step control. It offers transition detection with an interrupt output, low standby current, and supports hot insertion. The component is housed in a compact 3mm x 3mm thin QFN package and is designed for operation across a temperature range of -40°C to +125°C.

Feature Summary

• Integrates 8-port I/O expansion with individually configurable open-drain outputs or logic inputs featuring transition detection.
• Provides 8-bit PWM LED intensity control with both global coarse adjustment and individual fine-tuning steps.
• Supports hot insertion and features overvoltage-protected inputs rated up to 5.5V while operating on lower supply voltages.

Applications

• LCD backlighting systems
• LED status indication circuits
• Portable electronic equipment
• Laptop computer peripherals

Procurement Notes

Verify the specific suffix 'CECQ+' against official Analog Devices documentation to confirm the exact package type, temperature grade, and lead-free compliance status. Ensure the design environment matches the specified 2V to 3.5V operating range and 5.5V I/O tolerance. Confirm availability through authorized distributors as stock levels may vary.

Selection Notes

Select this component when an application requires multiple GPIOs combined with direct LED driving and dimming capabilities via a standard two-wire serial interface. It is suitable for space-constrained designs needing hot-swap support and low power consumption. Verify that the required I/O voltage levels are compatible with the 5.5V tolerant inputs and 50mA sink capability.

Part Context

This part belongs to the MAX73xx series of I/O expanders from Maxim Integrated, now part of Analog Devices. These devices are designed to reduce microprocessor pin count by providing serially controlled parallel I/O. The MAX71315 variant specifically adds integrated LED drive functionality, distinguishing it from standard GPIO expanders by combining port expansion with display illumination control in a single package.

Replacement Considerations

Consult official cross-reference lists for verified substitutes. Generic I/O expanders may lack the integrated LED PWM driver. Ensure any replacement maintains compatibility with the I2C/SMBus protocol and physical footprint constraints.