LM393DGKR

Overview

The LM393DGKR is a dual differential analog comparator manufactured by Texas Instruments, housed in an 8-VSSOP surface-mount package. It operates on a single or dual power supply ranging from 2 V to 30 V. The device features two independent channels with open-collector outputs compatible with CMOS and TTL logic families. Key electrical specifications include a typical propagation delay of 1.3 μs, a maximum input offset voltage of 5 mV, and a quiescent current of 2.5 mA. It supports a wide common-mode input voltage range and functions within an operating temperature range of 0°C to +70°C.

Feature Summary

• Dual-channel differential comparison capability for signal processing applications
• Open-collector output structure ensuring compatibility with various logic families
• Wide single-supply voltage operation supporting diverse power environments

Applications

• Over-voltage and under-voltage detection circuits
• Temperature sensing and control systems
• Physical switch interface adaptation

Procurement Notes

Verify the specific suffix 'RG4' against procurement requirements, as it indicates RoHS compliance and green material status. Confirm the package type matches the design footprint, as variations exist between standard SOIC and VSSOP forms within the broader LM393 family. Ensure the selected variant aligns with the required thermal and electrical specifications for the target application environment.

Selection Notes

Select this component when a dual-channel comparator with low power consumption and wide supply voltage tolerance is required. The VSSOP package offers a compact solution for space-constrained designs. Consider the open-collector output requirement for pull-up resistor implementation. Evaluate the 1.3 μs response time against system speed requirements to ensure adequate performance margins.

Part Context

This part belongs to the LM393 series of dual comparators, a widely used industry-standard component for general-purpose analog switching tasks. The DGKR designation specifically identifies the VSSOP-8 package variant produced by Texas Instruments. This series is known for its robustness and compatibility with both single and dual power supplies, making it suitable for a broad range of industrial and consumer electronics applications.

Replacement Considerations

LM393DGK is a non-RoHS compliant equivalent within the same package and specification profile. LM393ADGKR is a higher precision (A-grade) version with tighter offset voltage specifications. LM393DR is a similar dual-channel comparator available in a standard SOIC-8 package.