LMV7291MG

Overview

The LMV7291MG is a single-channel analog comparator from Texas Instruments, housed in an SC-70-5 surface-mount package. It operates on a supply voltage range of 1.8 V to 5 V with a typical quiescent current of 14 µA. The device features rail-to-rail inputs and push-pull outputs, ensuring compatibility with various logic families. Key electrical specifications include a propagation delay of 1.8 µs, an input offset voltage of 4 mV, and an input bias current of 10 nA. Common-mode rejection ratio is specified at 78 dB, while power supply rejection ratio reaches 80 dB. The component functions within a temperature range of -40°C to +85°C.

Feature Summary

• Rail-to-rail input capability allows signal processing near supply rails.
• Push-pull output stage provides direct interfacing with digital logic circuits.
• Low power consumption design supports battery-operated applications.

Applications

• General-purpose voltage threshold detection
• Simple analog-to-digital conversion interfaces
• Over-voltage or under-voltage protection circuits

Procurement Notes

Verify the specific suffix (e.g., MG vs. MGX) against the manufacturer's datasheet to confirm packaging type, such as cut tape versus reel. Ensure the order matches the required operating temperature range and pinout configuration for the SC-70-5 package. Cross-reference the part number with official Texas Instruments documentation to validate RoHS compliance status and availability channels before finalizing procurement.

Selection Notes

Select this component when low supply voltage operation down to 1.8 V is required alongside minimal power draw. The rail-to-rail input feature makes it suitable for signals swinging close to ground or the positive supply. Consider the 1.8 µs response time for applications where high-speed switching is not critical but accuracy and low cost are priorities over faster alternatives.

Part Context

This part belongs to the LMV7291 series of single comparators designed for low-voltage consumer electronics. It serves as a general-purpose solution for basic comparison tasks where power efficiency is more important than speed. The SC-70-5 package offers a compact footprint for space-constrained printed circuit board designs.

Replacement Considerations

Consult the Texas Instruments product selection guide for verified equivalents within the LMV729x family. Check for alternative packages like SOT-23-5 if pin compatibility differs. Verify that any substitute maintains the same 1.8 V minimum supply voltage and rail-to-rail input characteristics.