LM211DR

Overview

The LM211DR is a single-channel analog comparator manufactured by Texas Instruments, housed in an 8-SOIC surface-mount package. It operates on a supply voltage range of 3.5 V to 30 V with a quiescent current of 6 mA. The device features a differential input type and provides open collector and emitter outputs capable of sourcing up to 50 mA per channel. Key electrical specifications include a response time of 115 ns, an input offset voltage of 3 mV at ±15 V, and an input bias current of 75 nA. It functions within a temperature range of -40 °C to +85 °C.

Feature Summary

• Supports both open collector and open emitter output configurations for flexible logic interfacing.

Applications

• General-purpose signal comparison circuits
• Voltage threshold detection systems

Procurement Notes

Verify the specific datasheet revision and ordering suffixes when sourcing, as variations may exist between standard commercial grades and automotive-qualified equivalents like the LM211QDRQ1. Confirm that the SOIC-8 package dimensions align with your PCB footprint requirements. Ensure compliance with RoHS directives if required by your manufacturing standards.

Selection Notes

Select this component for applications requiring high-speed switching with a 115 ns response time and robust output drive capability. It is suitable for designs needing dual-mode output flexibility. Consider the LM211DR over lower-speed alternatives when rapid transition times are critical. Evaluate power consumption constraints against its 6 mA operating current.

Part Context

This part belongs to the LM111/LM211/LM311 family of comparators from Texas Instruments. These devices are industry-standard replacements for older discrete transistor-comparator circuits. The LM211 variant offers improved performance characteristics compared to the LM111 while maintaining pin compatibility with the broader series.

Replacement Considerations

• LM211DRE4
• LM211DRG4