MAX7326ATG+T

Overview

The MAX7326ATG+T is a 2-wire serial-interfaced peripheral featuring 16 I/O ports, including 12 push-pull outputs and four input ports with selectable internal pullups. It operates from a +1.71V to +5.5V supply voltage with a standby current of 0.6µA. The device supports a 400kHz I2C interface and provides overvoltage protection on inputs up to +6V. It utilizes two address inputs (AD0, AD2) for 16 slave addresses and includes latching transition detection with an interrupt output.

Feature Summary

• Four input ports feature latching transition detection with programmable interrupt masking.
• Twelve push-pull outputs provide 20mA sink current capability for driving LEDs or loads.
• Input ports are overvoltage protected to +6V independent of the supply voltage.
• Low standby current of 0.6µA ensures minimal power consumption during idle periods.

Applications

• Cell Phones
• Servers
• Notebooks

Procurement Notes

Verify the specific suffix 'TG+' indicates the 24-pin TQFN package with exposed pad and lead-free/RoHS compliance. Confirm the 'A' prefix denotes the -40°C to +125°C automotive temperature range. Ensure the ordering information matches the exact pinout and electrical specifications required for your design.

Selection Notes

Select this component when 12 push-pull outputs and 4 inputs are required in a single package. Consider the MAX7326 family members if different port configurations like open-drain outputs or varying input counts are needed. Verify that the 400kHz I2C speed and +6V tolerant inputs meet system requirements.

Part Context

The MAX7326 is part of the MAX7319–MAX7329 family of pin-compatible port expanders. It offers a specific configuration of 12 push-pull outputs and 4 inputs, distinguishing it from siblings like the MAX7324 (8 inputs/8 outputs) or MAX7327 (4 I/O/12 outputs). All family members share similar I2C interfaces and packaging options.

Replacement Considerations

Pin-compatible alternatives within the same family include the MAX7324, MAX7325, and MAX7327. These parts offer different combinations of input, output, and open-drain ports while maintaining the same 24-pin QSOP or TQFN footprint and I2C interface compatibility.