MAX7326AEG+

Overview

The MAX7326AEG+ is a 2-wire serial-interfaced peripheral featuring 16 I/O ports, divided into 12 push-pull outputs and four input ports with selectable internal pullups. Input ports are overvoltage protected to +6V and feature transition detection with an interrupt output. The device operates from a supply voltage of +1.71V to +5.5V and supports I2C communication up to 400kHz. It includes latching transition detection for transient changes and allows selection of 16 slave addresses via AD0 and AD2 inputs. Standby current is low at 0.6µA typical. The component is specified over the -40°C to +125°C automotive temperature range.

Feature Summary

• Features 12 push-pull outputs rated at 20mA sink current and 4 input ports with selectable internal pullups.
• Includes latching transition detection on input ports with an open-drain interrupt output.
• Input ports are overvoltage protected to +6V independent of supply voltage.
• Supports 16 I2C slave address selections using AD0 and AD2 inputs.

Applications

• Cell Phones
• Servers
• Notebooks

Procurement Notes

Verify the ordering suffix 'EG+' indicates a lead-free/RoHS-compliant package in the 24-pin QSOP format. Confirm the manufacturer is Analog Devices Inc./Maxim Integrated. Ensure the part number matches the specific pinout and electrical characteristics documented in the official datasheet before procurement.

Selection Notes

Select this component when a 16-port expander with predominantly push-pull outputs is required. It is suitable for applications needing overvoltage-tolerant inputs and latching interrupt capabilities. Consider the -40°C to +125°C operating range for automotive or industrial environments. Verify I2C bus compatibility and address configuration needs.

Part Context

The MAX7326 is part of the MAX7319–MAX7329 family of pin-compatible port expanders. It shares the same footprint as variants like the MAX7324, MAX7325, and MAX7327, which offer different combinations of input, open-drain, and push-pull ports. This specific model provides 12 push-pull outputs and 4 dedicated inputs.

Replacement Considerations

Pin-compatible alternatives within the same family include the MAX7324, MAX7325, and MAX7327. These parts share the same package and basic interface but differ in port configuration (e.g., open-drain vs. push-pull). Verify that the alternative's port types meet the application requirements before substitution.