LM339ADE4

Overview

The LM339ADE4 is a quad differential comparator manufactured by Texas Instruments, belonging to the LM339A series. It features four independent channels housed in a 14-pin SOIC surface-mount package. The device operates on a single supply voltage ranging from 2 V to 30 V with a typical quiescent current of 500 uA per channel. Key electrical specifications include a maximum input offset voltage of 3 mV, an input bias current of 250 nA, and a propagation delay of 1.3 us. The output stage utilizes an open collector configuration capable of sinking up to 6 mA, compatible with various logic families.

Feature Summary

• Integrates four independent high-gain differential comparators within a single integrated circuit
• Features an open-collector output stage designed for flexible wired-AND connections across multiple logic standards
• Operates effectively with a wide single-supply voltage range extending down to 2 V

Applications

• Temperature sensing circuits utilizing thermistor or diode inputs
• Over-voltage and under-voltage protection monitoring systems
• Logic level translation between different voltage domains
• Peak hold detection circuits for signal processing

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm the specific suffix indicates the RoHS-compliant variant. Ensure the ordering quantity matches the required reel or cut-tape packaging format. Validate that the intended application environment remains within the specified commercial temperature limits.

Selection Notes

Select this component when a low-cost, multi-channel comparison solution is required. The open-collector output necessitates an external pull-up resistor for proper operation. Consider the 1.3 us response time against system speed requirements. Verify that the 30 V maximum supply rating aligns with the target power rails.

Part Context

This part belongs to the industry-standard LM339 family of quad comparators. The 'A' designation typically denotes tighter performance tolerances compared to standard variants. The 'E4' suffix identifies the lead-free and RoHS-compliant manufacturing version produced by Texas Instruments.

Replacement Considerations

LM339ADRE4: Direct equivalent featuring identical pinout and electrical characteristics in the same SOIC-14 package.