LM393DRE4

Overview

The LM393DRE4 is a dual-channel analog comparator manufactured by Texas Instruments, featuring an open-collector output configuration. It operates within a supply voltage range of 2V to 36V single-supply or ±1V to ±18V dual-supply. The device exhibits a typical response time of 1.3μs and a maximum input offset voltage of 5mV at 30V. It draws a maximum static supply current of 2.5mA and supports a wide operating temperature range from 0°C to +70°C. Packaged in an 8-SOIC surface-mount format with a width of 3.90mm, it provides rail-to-rail output swing capabilities.

Feature Summary

• Dual differential voltage comparison architecture for general-purpose signal processing
• Open-collector output design enabling flexible logic level interfacing and wired-OR functionality
• Wide single or dual power supply operation supporting diverse industrial and consumer environments

Applications

• Over-voltage and under-voltage detection circuits
• Battery monitoring and low-battery threshold sensing
• Temperature and physical sensor threshold detection

Procurement Notes

Verify the specific suffix 'E4' indicates lead-free compliance and RoHS status during procurement. Confirm the package type matches the required 8-SOIC footprint. Ensure the operating temperature range meets the application's thermal requirements. Cross-reference the datasheet revision to confirm electrical characteristics remain consistent with the target design specifications.

Selection Notes

Select this component when a dual-channel comparator with low static current consumption is required. The open-collector output necessitates an external pull-up resistor for proper logic high levels. Consider the 1.3μs response time against system speed requirements. Verify that the 5mV input offset voltage specification aligns with the precision needs of the comparison circuit.

Part Context

This part belongs to the LM393 family of dual comparators, widely used in industrial and consumer electronics. The 'DRE4' designation specifies the SOIC-8 surface-mount package and lead-free manufacturing process. It serves as a direct replacement for standard LM393 variants while adhering to environmental compliance standards.

Replacement Considerations

• LM393DR
• LM393DRG4

FAQ

What is the significance of the open-collector output?

The open-collector output allows the user to connect the output to different voltage rails via an external pull-up resistor, facilitating interface with various logic families.

Does the E4 suffix affect electrical performance?

No, the E4 suffix denotes lead-free packaging and RoHS compliance; the electrical characteristics remain identical to the standard LM393DR.