LM393DRG3

Overview

The LM393DRG3 is a dual differential analog comparator manufactured by Texas Instruments, housed in an SOIC-8 surface-mount package. It operates on a single supply voltage ranging from 2V to 30V or dual supplies of ±1V to ±15V. The device features two independent high-precision comparators with an open-collector output capable of driving TTL and CMOS logic circuits directly. Key electrical specifications include a maximum input offset voltage of 5mV, a typical response time of 1.3 microseconds for a 100-mV input step, and a maximum operating temperature of +70°C.

Feature Summary

• Dual differential configuration providing two independent comparison channels within a compact integrated circuit.
• Open-collector output architecture enabling direct interface with various digital logic families without additional level shifting components.
• Wide single-supply operational range supporting low-voltage battery applications up to standard industrial rail voltages.

Applications

• Overvoltage and undervoltage protection circuits
• Sensor signal conditioning and threshold detection
• Level shifting between different logic voltage domains

Procurement Notes

Verify the specific suffix 'G3' against the manufacturer's current datasheet to confirm RoHS compliance status and lead times. Ensure the SOIC-8 footprint matches the target PCB design. Confirm that the commercial temperature grade meets the environmental requirements of the final assembly. Cross-reference ordering information with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when a general-purpose dual comparator is required for cost-sensitive designs. It is suitable for applications where moderate speed and precision are sufficient. Consider alternative packages if higher pin counts or different thermal performance are needed. Evaluate power consumption requirements as the quiescent current may vary with supply voltage.

Part Context

This part belongs to the LM393 family of dual voltage comparators, a widely used industry-standard series. The 'DR' designation indicates the SOIC-8 surface-mount package, while 'G3' typically denotes Green/RoHS-compliant packaging options. It serves as a foundational building block for analog signal processing tasks in consumer electronics and industrial control systems.

Replacement Considerations

LM393DR: Direct equivalent from Texas Instruments with identical pinout and electrical characteristics. LM2903DR: Industrial temperature grade variant offering extended operating range. LM393BDR: Improved performance version with lower offset voltage and faster response times.