LM211DG4 Equivalent & Substitute Parts

Part Overview

The LM211DG4 is a general-purpose comparator IC manufactured by Texas Instruments, housed in an 8-SOIC surface-mount package. This device is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design support and procurement. The LM211DG4 operates across a wide supply voltage range of 4.6V to 30V (single supply) or ±1.75V to ±15V (dual supply), making it suitable for diverse analog comparison applications requiring DTL, MOS, open-collector, open-emitter, RTL, and TTL output configurations.

Substiute Parts

LM211DG4

Texas InstrumentsIn Stock: 2289LM211DG4 Datasheet

Current PartRFQ

LM211D

STMicroelectronicsIn Stock: 18859LM211D Datasheet

MFR RecommendedRFQ

LM211DR2G

onsemiIn Stock: 16142LM211DR2G Datasheet

MFR RecommendedRFQ

LM211DE4

Texas InstrumentsIn Stock: 899LM211DE4 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM211DG4 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Package type: 8-SOIC surface-mount configuration
• Functional classification: General-purpose comparator with single element
• Output type: DTL, MOS, open-collector, open-emitter, RTL, TTL compatibility
• Voltage - Input Offset (Max): 3mV @ ±15V
• Current - Input Bias (Max): 0.1µA @ ±15V
• Current - Quiescent (Max): 6mA
• RoHS3 compliance and MSL Level 1 rating

Substitution Categories:

MFR Recommended Substitutes (Active status, full parameter compatibility):

• LM211D (STMicroelectronics)
• LM211DR2G (onsemi)

Parametric Equivalent (Obsolete status, electrical parameter match):

• LM211DE4 (Texas Instruments)

All substitute parts maintain the 8-SOIC package footprint, identical input offset voltage specification, and equivalent quiescent current ratings. Supply voltage ranges and operating temperature specifications vary between substitutes and must be evaluated against application requirements.

Parameter Comparison

Engineering Selection Recommendations

For Active Production Designs: LM211D (STMicroelectronics) and LM211DR2G (onsemi) are the preferred substitutes for the obsolete LM211DG4. Both parts maintain active product status, ensuring long-term availability and manufacturing support. The LM211D offers an extended operating temperature range (-40°C to 105°C) compared to the original specification, providing additional thermal margin for demanding applications. The LM211DR2G is supplied in Tape & Reel packaging, suitable for high-volume automated assembly processes.

Supply Voltage Consideration: LM211D and LM211DR2G specify a minimum single-supply voltage of 5V, compared to the LM211DG4's 4.6V minimum. Applications requiring operation below 5V single supply must retain the LM211DG4 or LM211DE4 (parametric equivalent).

For Legacy System Maintenance: LM211DE4 (Texas Instruments) provides parametric equivalence to the LM211DG4 with identical electrical specifications and operating temperature range. This part maintains obsolete status but offers compatibility for systems requiring exact parameter matching.

Compliance and Certification: All substitute parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with modern manufacturing and environmental standards.

Frequently Asked Questions (FAQ)

Q: Can LM211D be used as a direct replacement for LM211DG4? A: LM211D is electrically compatible with LM211DG4 in applications where the supply voltage remains at or above 5V. The minimum supply voltage differs: LM211DG4 operates from 4.6V, while LM211D requires 5V minimum. Operating temperature range extends to 105°C on LM211D versus 85°C on LM211DG4.

Q: What is the difference between LM211D and LM211DR2G? A: Both parts are electrically identical. The primary difference is packaging: LM211D is supplied in Tube packaging, while LM211DR2G is supplied in Tape & Reel format. Selection depends on assembly process requirements and volume considerations.

Q: Why does LM211DR2G not specify typical output current? A: The output current specification is not provided in the LM211DR2G datasheet documentation. For applications requiring confirmed output current capability, LM211D or LM211DE4 should be referenced, both specifying 50mA typical output current.

Q: Is LM211DE4 a suitable substitute for new designs? A: LM211DE4 maintains obsolete product status. While electrically equivalent to LM211DG4, it is not recommended for new designs. Active alternatives LM211D or LM211DR2G should be prioritized for long-term design support and procurement continuity.

Q: Are all substitute parts RoHS3 compliant? A: Yes. LM211D, LM211DR2G, and LM211DE4 all maintain ROHS3 compliance and MSL Level 1 rating, meeting modern environmental and manufacturing standards.

Q: What is the operating temperature range difference between substitutes? A: LM211D operates from -40°C to 105°C (extended upper limit). LM211DR2G operates from -25°C to 85°C (reduced lower limit). LM211DE4 matches the original -40°C to 85°C range. Application temperature requirements determine the appropriate substitute selection.