LM293ADRG4

Overview

The LM293ADRG4 is a dual differential voltage comparator manufactured by Texas Instruments. It operates on a single power supply ranging from 2 V to 30 V or dual supplies up to ±15 V. The device features an open-collector output capable of sinking up to 6 mA per channel, compatible with CMOS and TTL logic families. Key electrical specifications include a maximum input offset voltage of 5 mV, a typical response time of 300 ns, and a quiescent current of 500 µA. It is housed in an SOIC-8 surface-mount package and supports an operating temperature range from -25 °C to +85 °C.

Feature Summary

• Dual differential input configuration for precise voltage comparison
• Open-collector outputs enable wired-AND connections and flexible logic interfacing
• Wide single-supply voltage operation simplifies power design
• Low quiescent current consumption suitable for battery-powered applications

Applications

• Over-voltage and under-voltage detection circuits
• Threshold detection systems
• Logic level translation between different voltage domains
• Peak hold circuits

Procurement Notes

Verify the specific suffix 'DRG4' against the manufacturer's latest datasheet to confirm pinout compatibility and RoHS status. Confirm that the SOIC-8 package dimensions match your PCB footprint requirements. Ensure the operating temperature range meets your environmental specifications. Check for any recent product change notices regarding manufacturing location or material composition updates.

Selection Notes

Select this component when a low-cost, general-purpose dual comparator is required for single-supply applications. It is suitable for designs where moderate speed and accuracy are sufficient. Consider alternative parts if higher precision, lower offset voltage, or rail-to-rail output swing is necessary. Verify that the open-collector output requirement aligns with the downstream circuitry pull-up needs.

Part Context

The LM293ADRG4 belongs to the LM293 family of dual comparators from Texas Instruments. This series is widely used in industrial and consumer electronics for basic signal conditioning and threshold monitoring tasks. The 'A' designation typically indicates tighter performance tolerances compared to standard variants, while 'DRG4' specifies the tape-and-reel packaging format for automated assembly.

Replacement Considerations

LM293ADR: Identical functional specifications with potentially different packaging or lot codes. LM293DR: Standard version with similar characteristics but may have looser tolerance parameters. LM393: Pin-compatible alternative from other manufacturers, though electrical specs should be verified.