LM2901PWRE4

Overview

The LM2901PWRE4 is a quad differential comparator from Texas Instruments, housed in a 14-pin TSSOP package. It operates on single supplies from 2 V to 36 V or dual supplies of ±1 V to ±18 V. The device features open-collector outputs compatible with TTL, MOS, and CMOS logic. Key electrical characteristics include a typical supply current of 0.8 mA, input bias current of 25 nA, and response time of 1.3 µs. It is characterized for operation over the -40°C to +125°C temperature range.

Feature Summary

• Four independent voltage comparators designed for wide-range single or dual power supply operation
• Open-collector outputs allow wired-AND connections and compatibility with various logic families
• Low power consumption with supply current drain independent of the supply voltage
• Input common-mode voltage range includes ground, supporting single-supply applications

Applications

• General-purpose analog signal comparison
• Voltage monitoring and threshold detection circuits
• Logic interface between analog sensors and digital systems

Procurement Notes

Verify the specific ordering suffix 'E4' indicates lead-free packaging compliance as per Texas Instruments standards. Confirm the TSSOP-14 package dimensions and thermal characteristics match your PCB layout requirements. Ensure the operating temperature range of -40°C to +125°C meets your environmental specifications. Cross-reference the datasheet revision date to confirm parameter validity.

Selection Notes

Select this component when four independent comparators are required in a compact surface-mount package. It is suitable for designs needing low input bias current and ground-referenced common-mode inputs. Consider the open-collector output structure for interfacing with different voltage logic levels. Verify that the 1.3 µs response time is sufficient for your application speed requirements.

Part Context

The LM2901 belongs to the LMx39/LM2901 family of quad differential comparators manufactured by Texas Instruments. This series is widely used in industrial and consumer electronics for voltage sensing and control. The LM2901 variant specifically extends the operating temperature range to include military-grade conditions (-40°C to +125°C) compared to commercial variants.

Replacement Considerations

LM2901PWR is the non-lead-free equivalent. LM239PWR offers similar functionality but with a limited commercial temperature range (0°C to 70°C). LM339PWR is another alternative with comparable electrical characteristics but also restricted to commercial temperatures.