LM239PWRE4

Overview

The LM239PWRE4 is a quad differential comparator manufactured by Texas Instruments, housed in a 14-TSSOP surface-mount package. It operates on a single supply voltage ranging from 2 V to 30 V or dual supplies of ±1 V to ±15 V. The device features four independent comparators with open-collector outputs capable of sinking up to 20 mA. Key electrical specifications include a maximum input offset voltage of 5 mV and a typical quiescent current of 2.5 mA. The unit supports an operating temperature range from 0°C to +70°C and is RoHS compliant.

Feature Summary

• Quad differential architecture providing four independent comparison channels within a single integrated circuit
• Open-collector output stage compatible with various logic families including TTL, DTL, ECL, MOS, and CMOS
• Wide common-mode input voltage range that includes ground potential for low-side sensing applications

Applications

• General-purpose voltage monitoring and threshold detection circuits
• Interface between analog sensors and digital logic systems
• Over-voltage and under-voltage protection schemes

Procurement Notes

Verify the specific suffix RE4 indicates RoHS compliance and lead-free status as per manufacturer standards. Confirm the TSSOP-14 package dimensions match PCB footprint requirements. Ensure the industrial temperature range of 0°C to +70°C meets operational environmental constraints. Cross-reference the datasheet revision date to ensure compatibility with existing design documentation.

Selection Notes

Select this component when multiple independent comparisons are required in a compact surface-mount form factor. The open-collector output allows for wired-AND configurations and flexible voltage level shifting. Consider the 5 mV offset voltage specification for precision applications requiring accurate threshold determination without external trimming.

Part Context

This part belongs to the LMx39 series of quad comparators from Texas Instruments, designed for low-power and cost-sensitive applications. It shares functional similarities with the LM339 but offers specific performance characteristics tailored for general-purpose use. The series is widely utilized in consumer electronics and industrial control systems due to its versatility and broad supply voltage acceptance.

Replacement Considerations

LM339PWR: Pin-compatible alternative with similar electrical characteristics but potentially different offset voltage specifications. LM239DR: SOIC-14 package variant offering identical functionality in a different footprint. Verify thermal dissipation capabilities and exact offset voltage limits when substituting.