LMX393AUA

Overview

The LMX393AUA is a dual-channel precision comparator manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates within a supply voltage range of 1.8V to 5.5V and features an open-drain output configuration. Key electrical specifications include a maximum propagation delay of 600ns, a typical CMRR and PSRR of 70dB, and a maximum input offset voltage of 7mV at 5V. The device supports a static current consumption of up to 200µA and delivers a typical output current of 73mA at 5V. It is housed in an SOT-23-8 surface-mount package and functions across a temperature range of -40°C to 125°C.

Feature Summary

• Dual-channel architecture providing two independent comparison circuits in a compact footprint.
• Low-voltage operation capability supporting single-supply systems down to 1.8V.
• Open-drain output stage compatible with CMOS and TTL logic families.

Applications

• Battery-powered portable electronic devices requiring low quiescent current.
• Threshold detection circuits in industrial control systems.
• Signal conditioning stages for microcontroller input interfaces.

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for specific lot traceability requirements. Ensure the ordering suffix matches the required tape-and-reel packaging format. Validate that the supplier provides original datasheets matching the LMX393AUA specification sheet.

Selection Notes

Select this component when dual comparators are needed in space-constrained designs. Consider the 600ns propagation delay for timing-sensitive applications. Evaluate the 7mV offset voltage against system accuracy requirements. Ensure the open-drain output aligns with the pull-up resistor strategy of the target circuit design.

Part Context

The LMX393AUA belongs to the LMX393 series of precision comparators from Maxim Integrated. This series is designed for general-purpose analog switching and threshold detection tasks. The part integrates standard comparator functionality into a small SOT-23-8 package, suitable for modern PCB layouts.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify pin compatibility and electrical parameters before considering alternative manufacturers.