LMX393AKA+

Overview

The LMX393AKA+ is a dual general-purpose comparator manufactured by Analog Devices Inc./Maxim Integrated. It features an open-drain output configuration and operates within a supply voltage range of 1.8V to 5.5V. Key electrical parameters include a maximum propagation delay of 600ns, a typical static current consumption of 200µA, and a maximum input offset voltage of 7mV at 5V. The device supports a wide operating temperature range from -40°C to +125°C and is housed in a compact SOT-23-8 surface-mount package.

Feature Summary

• Dual-channel architecture providing two independent comparison circuits in a single component
• Open-drain output stage enabling flexible interfacing with various logic families
• Wide single-supply voltage operation supporting low-voltage system designs
• Extended industrial temperature rating suitable for demanding environmental conditions

Applications

• Battery-powered portable devices requiring low quiescent current
• Threshold detection circuits in consumer electronics
• Signal conditioning interfaces for microcontroller inputs
• Over-voltage or under-voltage protection monitoring

Procurement Notes

Verify the specific suffix 'AKA' against official manufacturer documentation to confirm pinout and electrical specifications. Confirm RoHS compliance status through certified datasheets. Check for obsolescence notices as this component may be subject to discontinuation. Ensure the SOT-23-8 package footprint matches the target PCB design constraints before finalizing procurement.

Selection Notes

Select this component when dual comparators are required in a minimal footprint application. The open-drain output necessitates external pull-up resistors for proper logic level translation. Consider the 600ns propagation delay limit for high-speed signal processing tasks. Verify that the 1.8V minimum supply voltage aligns with the system power rail availability.

Part Context

The LMX393AKA+ belongs to the LMX393 family of low-voltage comparators from Maxim Integrated. This series is designed as a drop-in replacement for industry-standard LM393 devices while offering improved performance in low-voltage environments. The family typically includes single, dual, and quad variants to accommodate different channel density requirements.

Replacement Considerations

Public confirmed substitute part numbers: LM393AMX.