LM2901DE4

Overview

The LM2901DE4 is a quad differential comparator manufactured by Texas Instruments, housed in a 14-pin SOIC package. It operates within an extended temperature range of -40°C to +125°C and supports single or dual power supplies. The device features open-collector outputs compatible with TTL and CMOS logic families. Key electrical characteristics include a maximum input bias current of 0.25 µA at 25°C, a maximum input offset voltage of 7 mV, and a typical response time of 1.3 µs. It is designed for general-purpose analog comparison tasks requiring low power consumption and wide supply voltage tolerance.

Feature Summary

• Quad differential architecture providing four independent comparison channels within a single integrated circuit
• Open-collector output configuration enabling wired-AND functionality and compatibility with various logic families
• Extended industrial temperature rating ensuring reliable operation across harsh environmental conditions
• Low input bias current specification minimizing loading effects on high-impedance signal sources

Applications

• Level detection circuits in consumer electronics
• Window comparator configurations for voltage monitoring
• Over-voltage and under-voltage protection systems
• Zero-crossing detectors in AC signal processing

Procurement Notes

Verify the specific suffix DE4 against the manufacturer's official datasheet to confirm pinout compatibility and electrical tolerances. Ensure the component meets RoHS compliance requirements for your assembly process. Cross-reference the ordering information with the latest Texas Instruments documentation to validate availability and manufacturing status before finalizing procurement plans.

Selection Notes

Select this component when multiple independent voltage comparisons are required in space-constrained designs. The SOIC package offers a balance between thermal performance and board density. Consider the open-collector output limitations regarding pull-up resistor requirements and ensure the supply voltage range aligns with the system's power distribution network constraints.

Part Context

The LM2901 belongs to the broader family of quad comparators from Texas Instruments, sharing functional similarities with the LM239 and LM339 series. These devices are widely used in industrial and automotive applications due to their robustness and low cost. The DE4 variant specifically denotes the surface-mount SOIC packaging option, distinguishing it from through-hole PDIP alternatives while maintaining identical internal circuitry and performance specifications.

Replacement Considerations

LM2901DR serves as a direct pin-compatible alternative in the same SOIC-14 package. LM2901PWR provides equivalent functionality in a TSSOP-14 package, requiring layout adjustments. LM239N offers similar performance in a PDIP-14 through-hole package for legacy board designs.