LP2901DRE4

Overview

The LP2901DRE4 is a quad differential comparator manufactured by Texas Instruments, housed in a 14-pin SOIC package. It operates within a supply voltage range of 2 V to 36 V on a single supply or ±1 V to ±18 V on dual supplies. The device features an open-collector output type compatible with TTL, MOS, and CMOS logic families. Key electrical characteristics include a typical response time of 1.3 µs, a maximum input offset voltage of 7 mV, and a typical operating supply current of 0.8 mA. The component supports an industrial temperature range from -40 °C to +125 °C.

Feature Summary

• Quad differential architecture providing four independent comparison channels in a single package
• Wide single-supply operation capability ranging from 2 V to 36 V
• Open-collector outputs allowing wired-AND configuration for logical functions
• Low power consumption with independent supply current stability

Applications

• General-purpose voltage monitoring and threshold detection circuits
• Interface between analog sensors and digital logic systems
• Over-voltage and under-voltage protection schemes
• Simple pulse width modulation (PWM) generation

Procurement Notes

Verify the specific suffix 'E4' indicates lead-free compliance and RoHS status as per manufacturer documentation. Confirm the 'DR' suffix corresponds to the tape-and-reel packaging format rather than tube. Ensure the ordering part number matches the exact pinout and thermal specifications required for the target PCB layout. Cross-reference the datasheet revision date to ensure compatibility with current design standards.

Selection Notes

Select this component when multiple independent comparators are needed in a space-constrained surface-mount application. The wide supply voltage range makes it suitable for both low-voltage battery-operated devices and standard 5 V or 12 V systems. Consider the open-collector output limitation if push-pull drive capability is strictly required by the downstream circuitry. Evaluate the 1.3 µs response time against signal frequency requirements to prevent propagation delay errors.

Part Context

The LP2901 series belongs to Texas Instruments' family of low-power quad comparators, offering a cost-effective alternative to operational amplifiers used in comparator mode. It shares functional similarities with the LM2901 but may differ in specific electrical tolerances or manufacturing revisions. The 'LP' designation typically denotes a low-power variant optimized for reduced quiescent current consumption compared to standard industry equivalents.

Replacement Considerations

The LM2901DRE4 is a direct functional substitute within the same product family. Other quad comparators in the SOIC-14 package should be evaluated for pin compatibility and electrical parameter alignment before substitution.