MAX7313DAEG+

Overview

The MAX7313DAEG+ is a 16-port I/O expander with integrated LED intensity control, interrupt capability, and hot-insertion protection. It features an I2C/SMBus serial interface operating at up to 400 kHz. The device supports a supply voltage range of 2V to 3.6V and provides open-drain outputs rated for 50mA sink current and 5.5V tolerance. It includes 8-bit PWM control for LED brightness adjustment and independent two-phase blink timing. The component operates within a temperature range of -40°C to +125°C and is housed in a 24-pin QSOP package.

Feature Summary

• Integrated 8-bit PWM control for coarse and fine LED intensity adjustment
• Independent two-phase LED blinking with configurable on/off states per phase
• Hot-insertion support with high-impedance inputs during power-down
• Transition detection logic with automatic interrupt generation

Applications

• LCD backlighting systems
• LED status indication circuits
• Portable equipment power management
• Keypad backlight drivers
• RGB LED driver arrays

Procurement Notes

Verify the ordering suffix DAEG+ corresponds to the 24-pin QSOP package variant. Confirm lead-free/RoHS compliance status as indicated by the plus sign. Ensure the specific revision level matches the design requirements. Cross-reference the manufacturer's official documentation for any recent updates to the pinout or electrical characteristics before finalizing procurement orders.

Selection Notes

Select this component when a microprocessor requires expanded GPIO capabilities via a standard I2C interface. It is suitable for applications needing direct LED driving without external transistors. Consider the 50mA output rating and 5.5V external supply tolerance for load compatibility. Verify that the available I2C address combinations meet system bus requirements.

Part Context

This device belongs to the MAX7313 family of I/O expanders. It shares pin and software compatibility with the MAX7311, PCA9535, and PCA9555. The DAEG+ designation specifies the industrial temperature range and the 24-lead QSOP surface-mount package format. It serves as a peripheral interface solution for embedded systems requiring additional digital I/O ports.

Replacement Considerations

The MAX7311, PCA9535, and PCA9555 are documented as pin and software compatible alternatives. Verify register mapping and electrical specifications match the original design constraints before substitution. Ensure the replacement package type fits the existing PCB footprint.