LM211DRE4

Overview

The LM211DRE4 is a high-speed differential comparator manufactured by Texas Instruments, housed in an 8-SOIC package. It operates within a supply voltage range of 3.5V to 30V (single) or ±1.75V to ±15V (dual). Key electrical characteristics include a maximum input offset voltage of 3mV at ±15V, a typical output current of 50mA, and a response time of 115ns. The device supports open collector and open emitter outputs, functions with DTL, MOS, RTL, and TTL logic families, and maintains a maximum average bias current of 0.25µA.

Feature Summary

• Provides differential comparison capabilities with strobe functionality for precise timing control.
• Features open collector and open emitter outputs compatible with various logic families including DTL, MOS, RTL, and TTL.
• Designed for high-speed operation with a rapid response time suitable for demanding signal processing applications.

Applications

• High-speed data acquisition systems requiring fast signal threshold detection.
• Voltage monitoring circuits utilizing strobe inputs for noise immunity.
• Logic interface adapters between analog signals and digital logic families such as TTL or MOS.

Procurement Notes

Verify the specific suffix 'E4' confirms lead-free composition and RoHS compliance status as per manufacturer documentation. Confirm the SOIC-8 package dimensions and pinout match the design footprint requirements. Ensure the operating temperature range aligns with the intended environmental conditions. Cross-reference the datasheet revision history for any updates to electrical characteristics or recommended operating conditions before finalizing procurement specifications.

Selection Notes

Select this component when differential input comparison with strobe capability is required alongside compatibility with multiple logic families. Consider the 50mA output drive capability for direct interfacing without additional buffering. Evaluate the 115ns response time against system speed requirements. Verify that the 3mV input offset voltage specification meets the precision needs of the application compared to lower-offset alternatives.

Part Context

The LM211DRE4 belongs to the LM211 series of comparators from Texas Instruments, which are part of the broader LM111/LM211/LM311 family. This series is characterized by high-speed performance and flexible output configurations. The 'D' indicates the SOIC surface-mount package, while 'RE4' typically denotes tape-and-reel packaging with lead-free/RoHS-compliant materials. It serves as a standard solution for general-purpose high-speed comparison tasks in industrial and commercial electronics.

Replacement Considerations

The LM311DRE4 is a verified substitute within the same family, offering similar functionality but potentially differing in temperature grade or specific electrical limits. The LM211DR is the non-leaded equivalent without the E4 suffix, though functional compatibility should be confirmed via datasheets. Direct pin-to-pin replacements within the LM111/LM211/LM311 family may require verification of supply voltage and temperature range specifications.