LM2901DRE4

Overview

The LM2901DRE4 is a quad differential comparator manufactured by Texas Instruments, housed in a 14-pin SOIC surface-mount package. It operates on single or dual power supplies ranging from 2V to 30V (single) or ±1V to ±15V (dual). Key electrical parameters include a typical response time of 1.3µs, an input bias current of 0.25µA, and an input offset voltage of up to 7mV at 30V. The device features open-collector outputs compatible with TTL, MOS, and CMOS logic families. It supports a wide operating temperature range from -40°C to +125°C.

Feature Summary

• Quad differential architecture providing four independent comparison channels within a single integrated circuit.
• Open-collector output stage allows for wired-AND connection capabilities and compatibility with various logic families.
• Wide supply voltage operation enables flexibility in both single-supply and dual-supply system designs.
• Extended industrial temperature rating ensures reliable performance across harsh environmental conditions.

Applications

• Industrial process control systems requiring multiple voltage threshold monitoring points.
• Power supply management circuits for over-voltage and under-voltage detection.
• Automotive electronic modules utilizing robust analog signal processing.
• General-purpose analog-to-digital interface circuits for signal conditioning.

Procurement Notes

Verify the specific suffix 'E4' indicates lead-free composition and RoHS compliance status as per manufacturer documentation. Confirm the SOIC-14 package dimensions match PCB footprint requirements. Ensure the ordering part number aligns with the desired tape-and-reel quantity specifications provided in official TI catalogs. Cross-reference the datasheet revision date to ensure all electrical characteristics are current.

Selection Notes

Select this component when a design requires four independent comparators with differential inputs in a compact surface-mount form factor. It is suitable for applications needing wide supply voltage ranges and industrial temperature stability. Consider the open-collector output limitation if push-pull drive capability is required without external pull-up resistors. Evaluate the 1.3µs response time against signal frequency requirements to ensure adequate propagation delay margins.

Part Context

The LM2901 series belongs to Texas Instruments' family of low-power, low-offset voltage quad comparators. The 'D' suffix denotes the SOIC package type, while 'RE4' typically signifies reel packaging and lead-free/RoHS compliant construction. This variant integrates four comparators into a single chip, reducing board space compared to discrete solutions. It serves as a standard solution for general-purpose analog comparison tasks in consumer and industrial electronics.

Replacement Considerations

LM2901DR

FAQ

What is the maximum input offset voltage specified for the LM2901DRE4?

The maximum input offset voltage is specified as 7mV at a supply voltage of 30V.

Can the outputs of the LM2901DRE4 be connected together?

Yes, the open-collector outputs can be connected to other open-collector outputs to implement a wired-AND function.

Is the LM2901DRE4 suitable for automotive applications?

Yes, the device supports an operating temperature range of -40°C to +125°C, which aligns with many automotive environmental requirements.