LM393AM

Overview

The LM393AM is a dual independent precision voltage comparator manufactured by onsemi, designed for single or split power supply operation. It features a wide supply voltage range of 2.0 V to 36 V (single) or ±1.0 V to ±18 V (split). Key electrical parameters include a maximum input offset voltage of 5.0 mV, low input bias current of 25 nA, and very low supply current drain of 0.4 mA. The device offers open-collector outputs compatible with TTL, DTL, ECL, MOS, and CMOS logic systems.

Feature Summary

• Dual independent precision comparators with low offset voltage specifications
• Wide single-supply and split-supply voltage operating ranges
• Low input bias current and very low supply current drain
• Open-collector outputs compatible with various logic families

Applications

• Consumer electronics signal processing
• Automotive electronic circuits
• Industrial control systems

Procurement Notes

Verify the specific suffix 'AM' against official onsemi documentation to confirm package type and temperature grade. Ensure compatibility with required logic levels and supply voltages. Check for obsolescence status as older variants may be discontinued. Confirm RoHS compliance details in the latest datasheet revision before procurement.

Selection Notes

Select this component when precise voltage comparison is required with minimal offset error. The low supply current makes it suitable for battery-operated applications. Verify that the open-collector output configuration meets system pull-up requirements. Ensure the operating temperature range aligns with environmental conditions.

Part Context

The LM393 series consists of dual independent comparators originally developed for low-voltage applications. The 'A' suffix typically denotes tighter offset voltage specifications compared to standard versions. This part belongs to a long-standing family used across multiple industries for analog-to-digital interface tasks.

Replacement Considerations

• LM393N
• LM293