LM211DE4 Equivalent & Substitute Parts

Part Overview

The LM211DE4 is a general-purpose comparator IC manufactured by Texas Instruments in 8-SOIC surface-mount packaging. This device is classified as obsolete, which necessitates identification of active equivalent alternatives for ongoing design and procurement requirements. The LM211DE4 operates across a wide supply voltage range and is suitable for applications requiring open-collector or open-emitter output configurations in DTL, MOS, RTL, and TTL logic families.

Substiute Parts

LM211DE4

Texas InstrumentsIn Stock: 899LM211DE4 Datasheet

Current PartRFQ

LM211D

STMicroelectronicsIn Stock: 18859LM211D Datasheet

MFR RecommendedRFQ

LM211DR2G

onsemiIn Stock: 16142LM211DR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM211DE4 are qualified based on the following criteria:

• Identical package and mounting type: 8-SOIC surface mount
• Matching output type configuration: DTL, MOS, Open-Collector, Open-Emitter, RTL, TTL
• Compatible voltage supply ranges: minimum supply voltage must accommodate the LM211DE4 operating range
• Equivalent input offset voltage specification: 3mV @ ±15V
• Matching input bias current specification: 0.1µA @ ±15V
• Output current capability: 50mA typical
• Quiescent current specification: 6mA maximum
• Compliance with RoHS3 and REACH requirements
• MSL rating of 1 (Unlimited)

The two substitute parts identified—LM211D (STMicroelectronics) and LM211DR2G (onsemi)—meet all electrical and mechanical substitution criteria, though with variations in product status, operating temperature range, and packaging format.

Parameter Comparison

Engineering Selection Recommendations

Both LM211D and LM211DR2G are active product alternatives to the obsolete LM211DE4. Selection between these substitutes depends on application-specific requirements:

LM211D (STMicroelectronics): This substitute offers the widest operating temperature range (-40°C ~ 105°C), extending beyond the original LM211DE4 specification. It is supplied in tube packaging and maintains full electrical compatibility with the original device across all specified parameters.

LM211DR2G (onsemi): This substitute maintains the original operating temperature range (-25°C ~ 85°C) and is supplied in tape and reel format, suitable for high-volume automated assembly. The output current specification is not provided in the datasheet; applications requiring explicit 50mA output current confirmation should reference the manufacturer's detailed specifications.

Both substitutes comply with RoHS3 and REACH requirements and maintain MSL rating 1 (Unlimited). The minimum supply voltage for both substitutes is 5V (single supply) or ±2.5V (dual supply), which is higher than the original LM211DE4 minimum of 4.6V or ±1.75V. Applications operating at the lower voltage extremes of the original device require design verification.

Frequently Asked Questions (FAQ)

Q: Can LM211D or LM211DR2G be used as direct pin-for-pin replacements for LM211DE4?

A: Yes. Both substitutes share identical 8-SOIC packaging and pinout. No PCB modifications are required for mechanical or electrical interface compatibility.

Q: What is the primary difference between LM211D and LM211DR2G?

A: The primary differences are packaging format (tube versus tape and reel) and operating temperature range. LM211D supports -40°C ~ 105°C, while LM211DR2G supports -25°C ~ 85°C. Select based on your assembly process requirements and thermal operating environment.

Q: Are there supply voltage compatibility concerns when substituting?

A: Both substitutes require minimum supply voltages of 5V (single) or ±2.5V (dual), compared to the original LM211DE4 minimum of 4.6V or ±1.75V. Applications operating at lower supply voltages must be redesigned or verified with the substitute device specifications.

Q: Do both substitutes meet the same compliance standards as the original LM211DE4?

A: Yes. Both LM211D and LM211DR2G are ROHS3 compliant, REACH unaffected, and carry MSL rating 1 (Unlimited), matching the original device compliance profile.

Q: Is the output current specification identical across all three devices?

A: The LM211DE4 and LM211D both specify 50mA typical output current. The LM211DR2G datasheet does not provide an explicit output current specification; contact the manufacturer for confirmation if this parameter is critical to your application.