MAX7310AUE+T

Overview

The MAX7310AUE+T is an 8-bit I/O port expander featuring a 2-wire SMBus/I2C-compatible serial interface. It operates within a supply voltage range of 2.3V to 5.5V and supports clock frequencies up to 400kHz. The device includes an input port register, output port register, polarity inversion register, configuration register, and bus timeout register. It provides 56 selectable slave ID addresses via three address pins. The unit delivers low standby current of 1.7µA typical and features a 5V tolerant open-drain output on I/O0. It is housed in a 16-pin TSSOP package and specified for operation from -40°C to +125°C.

Feature Summary

• Configurable 8-bit parallel input/output ports with individual direction control
• Bus timeout mechanism ensures lock-free operation by resetting the serial interface if SCL or SDA remains low beyond 30ms
• Active-low reset input forces all I/O lines to default to inputs upon activation

Applications

• Servers
• RAID Systems
• Industrial Control
• Medical Equipment
• Instrumentation and Test Measurement

Procurement Notes

Verify that the component matches the specific suffix AUE, which designates the 16-pin TSSOP package variant. Confirm the presence of the '+' symbol indicating lead-free compliance and RoHS adherence. Ensure the ordering information aligns with the manufacturer's current datasheet specifications before finalizing procurement orders.

Selection Notes

Select this component when system architecture requires expanding microcontroller GPIO capabilities via standard I2C or SMBus protocols. The wide operating voltage range accommodates various logic levels, while the extensive temperature range suits industrial environments. Verify that the required number of slave addresses fits within the available 56 options defined by the AD0-AD2 pin configurations.

Part Context

This part belongs to the MAX7310 series of serially interfaced I/O expanders manufactured by Analog Devices (Maxim Integrated). The family offers variations in package types including Thin QFN and QSOP, alongside the TSSOP option. These devices are designed to provide cost-effective peripheral expansion for embedded systems requiring additional digital input and output lines.

Replacement Considerations

Direct replacements include other variants within the MAX7310 family such as MAX7310ATE (Thin QFN) or MAX7310AEE (QSOP), provided the package footprint is compatible. Cross-family substitutes require verification of pinout compatibility and electrical parameter alignment.