LP339DRG4 Equivalent & Substitute Parts

Part Overview

The LP339DRG4 is a general-purpose quad comparator IC manufactured by Texas Instruments in 14-SOIC surface-mount packaging. This device integrates four independent voltage comparators with CMOS, MOS, and open-collector output configurations, suitable for analog signal processing and threshold detection applications. The LP339DRG4 carries an obsolete product status, making equivalent and substitute parts necessary for ongoing design support, production continuity, and component sourcing.

Substiute Parts

LP339DRG4

Texas InstrumentsIn Stock: 854LP339DRG4 Datasheet

Current PartRFQ

LP339M/NOPB

Texas InstrumentsIn Stock: 1974LP339M/NOPB Datasheet

DirectRFQ

LP339MX/NOPB

Texas InstrumentsIn Stock: 3545LP339MX/NOPB Datasheet

DirectRFQ

LP339DR

Texas InstrumentsIn Stock: 5077LP339DR Datasheet

MFR RecommendedRFQ

AS339MTR-G1

Diodes IncorporatedIn Stock: 21165AS339MTR-G1 Datasheet

MFR RecommendedRFQ

BA2901SF-E2

Rohm SemiconductorIn Stock: 15563BA2901SF-E2 Datasheet

MFR RecommendedRFQ

LM339ADT

STMicroelectronicsIn Stock: 50447LM339ADT Datasheet

MFR RecommendedRFQ

LM339DT

STMicroelectronicsIn Stock: 445298LM339DT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LP339DRG4 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Package type: 14-SOIC surface-mount form factor (0.154" width, 3.90mm)
• Number of comparator elements: 4
• Output configuration: Open-Collector capability (minimum requirement)
• Supply voltage range: Must encompass or exceed 3V ~ 30V single supply or ±1.5V ~ 15V dual supply
• Input offset voltage: Maximum 5mV @ 30V
• Input bias current: Maximum 0.025µA @ 5V
• Output current capability: Minimum 30mA @ 5V
• Quiescent current: Maximum 100µA
• Operating temperature: Minimum 0°C ~ 70°C coverage
• Compliance: ROHS3 and REACH requirements

Substitute parts are grouped into two categories:

Category A - Direct Texas Instruments Equivalents (LP339 Series): LP339M/NOPB, LP339MX/NOPB, and LP339DR maintain the LP339 base product number with identical functional architecture. These parts share the same die design and are pin-compatible with the obsolete LP339DRG4.

Category B - Cross-Manufacturer Alternatives: AS339MTR-G1 (Diodes Incorporated), BA2901SF-E2 (Rohm Semiconductor), LM339ADT, and LM339DT (STMicroelectronics) provide functional equivalence through comparable electrical specifications and identical package geometry, though with variations in output type configuration and operating temperature ranges.

Parameter Comparison

Engineering Selection Recommendations

Tier 1 - Direct Replacement (Recommended): LP339DR is the manufacturer-recommended direct replacement for LP339DRG4. This part maintains identical electrical specifications, supply voltage range, output current capability, and quiescent current characteristics. Both parts share the same 14-SOIC package geometry and operating temperature range. LP339DR carries active product status with high inventory availability (5016 pcs), ensuring long-term supply continuity. This selection eliminates any design re-qualification requirements.

LP339M/NOPB and LP339MX/NOPB are alternative Texas Instruments LP339 variants with active status. These parts feature expanded supply voltage range (2V ~ 36V vs. 3V ~ 30V) and dual supply capability (±1V ~ 18V vs. ±1.5V ~ 15V), providing greater design flexibility. However, output current is reduced to 10mA typical, which may require circuit re-evaluation in high-current applications. Both parts are ROHS3 compliant with MSL-1 rating.

Tier 2 - Cross-Manufacturer Alternatives: LM339DT (STMicroelectronics) offers the highest inventory availability (445,200 pcs) with active product status. This part meets all critical electrical parameters and maintains the 0°C ~ 70°C operating temperature range. Output type includes expanded compatibility (CMOS, DTL, ECL, MOS, Open-Collector, TTL). Quiescent current is reduced to 2.5mA, providing power efficiency benefits. Pin compatibility and package geometry are identical to LP339DRG4.

LM339ADT (STMicroelectronics) provides superior input offset voltage performance (2mV @ 30V vs. 5mV @ 30V) and lower input bias current (0.1µA @ 5V vs. 0.025µA @ 5V). This part is suitable for precision analog applications requiring tighter offset specifications.

AS339MTR-G1 (Diodes Incorporated) and BA2901SF-E2 (Rohm Semiconductor) extend operating temperature ranges (-40°C ~ 85°C and -40°C ~ 105°C respectively), making them suitable for industrial and automotive applications. Both parts feature reduced quiescent current (2mA) and are ROHS3 compliant. BA2901SF-E2 operates to 105°C, providing the widest temperature coverage among all substitutes.

Compliance & Certification: All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the original LP339DRG4 regulatory requirements. MSL ratings are equivalent or superior (MSL-1 for most alternatives vs. MSL-1 for the original part).

Frequently Asked Questions (FAQ)

Q: Can LP339M/NOPB or LP339MX/NOPB be used as direct replacements for LP339DRG4? A: Both parts are pin-compatible and functionally equivalent. However, output current is reduced from 30mA to 10mA typical. Verify that your circuit design does not require the higher output current specification before substitution. Both parts feature expanded supply voltage range, which may benefit certain applications.

Q: What is the key difference between LP339DR and LP339M/NOPB? A: LP339DR maintains the original LP339DRG4 electrical specifications, including 30mA output current and 3V ~ 30V supply range. LP339M/NOPB offers expanded supply voltage (2V ~ 36V) and reduced output current (10mA). Select LP339DR for direct replacement without design changes; select LP339M/NOPB if expanded supply voltage range is beneficial and 10mA output current is sufficient.

Q: Is LM339DT a suitable replacement for high-volume production? A: Yes. LM339DT offers the highest inventory availability (445,200 pcs) among all substitutes, ensuring reliable long-term supply. The part is pin-compatible, ROHS3 compliant, and meets all critical electrical parameters. Quiescent current is reduced to 2.5mA, providing power efficiency benefits in battery-powered applications.

Q: What are the package differences between these substitute parts? A: All substitute parts use 14-SOIC surface-mount packaging. LP339DRG4, LP339M/NOPB, LP339MX/NOPB, LP339DR, AS339MTR-G1, LM339ADT, and LM339DT use 14-SOIC with 0.154" width (3.90mm). BA2901SF-E2 uses 14-SOP with 0.173" width (4.40mm). Verify PCB footprint compatibility before selecting BA2901SF-E2, as the slightly wider package may require layout adjustment.

Q: Can I use AS339MTR-G1 or BA2901SF-E2 in applications requiring 0°C ~ 70°C operation? A: Yes. Both parts exceed the 0°C ~ 70°C operating temperature requirement. AS339MTR-G1 operates -40°C ~ 85°C, and BA2901SF-E2 operates -40°C ~ 105°C. These parts are suitable for applications requiring extended temperature coverage beyond the original specification.

Q: What is the MSL (Moisture Sensitivity Level) consideration for these parts? A: LP339DRG4 and most substitutes carry MSL-1 rating (unlimited moisture sensitivity), meaning standard storage and handling procedures apply. AS339MTR-G1 carries MSL-3 rating (168-hour floor life), requiring more stringent moisture control during storage and assembly. Verify your manufacturing process compatibility with MSL-3 requirements before selecting AS339MTR-G1.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All substitute parts listed (LP339M/NOPB, LP339MX/NOPB, LP339DR, AS339MTR-G1, BA2901SF-E2, LM339ADT, LM339DT) are ROHS3 compliant and REACH unaffected, matching the original LP339DRG4 regulatory status.