SC239DR2G

Comparators Overview

The SC239DR2G is a quad analog comparator manufactured by onsemi, housed in a 14-SOIC surface-mount package. It features four independent channels with open-collector outputs compatible with CMOS, TTL, and MOS logic families. The device operates within a supply voltage range of 3 V to 36 V for single supplies or ±1.5 V to ±18 V for dual supplies. It draws a maximum quiescent current of 2.5 mA and provides an output sink current of 16 mA. The input offset voltage is typically 5 mV, with a propagation delay of 1.3 µs. It supports an operating temperature range from -25°C to +85°C.

Comparators Feature Summary

• Quad configuration providing four independent comparison channels in a compact 14-pin SOIC package
• Open-collector output stage ensures compatibility with various digital logic families including CMOS and TTL
• Wide single-supply voltage operation ranging from 3 V to 36 V for flexible power integration
• Low quiescent current consumption suitable for battery-powered and energy-efficient applications

Comparators Applications

• General-purpose signal processing and threshold detection circuits
• Power supply monitoring and over-voltage/under-voltage protection systems
• Industrial control systems requiring multiple independent voltage comparisons
• Temperature sensing interfaces using thermistor-based voltage dividers

Comparators Procurement Notes

Verify the specific suffix DR2G confirms the tape-and-reel packaging format intended for automated surface-mount assembly processes. Confirm that the SC prefix aligns with the required automotive or industrial qualification standards if applicable to your design. Ensure the 14-SOIC footprint matches your PCB layout constraints and thermal management requirements before finalizing procurement orders.

Comparators Selection Notes

Select this component when a quad comparator solution is required with wide supply voltage flexibility and low power consumption. The open-collector output simplifies interfacing with different logic levels without additional level-shifting circuitry. Consider the 1.3 µs propagation delay and 5 mV input offset voltage specifications against your system's timing and accuracy requirements to ensure adequate performance margins.

Comparators Part Context

The SC239DR2G belongs to the LM239/LM339 family of quad comparators produced by onsemi. It serves as a high-volume general-purpose alternative to discrete comparator solutions, offering integrated functionality in a standard small-outline package. This series is widely utilized in consumer electronics, industrial equipment, and telecommunications infrastructure where reliable voltage monitoring and switching are essential.

Comparators Replacement Considerations

The LM239DR2G is a direct functional equivalent within the same product family. Verify pinout compatibility and electrical parameter alignment before substitution. Other quad comparators may require external pull-up resistors or level shifting if their output stages differ significantly from the open-collector design.