LM339ADE4 Equivalent & Substitute Parts

Part Overview

The LM339ADE4 is a general-purpose quad comparator IC manufactured by Texas Instruments, housed in a 14-SOIC surface-mount package. This device features four independent open-collector output comparators suitable for precision voltage comparison applications across a wide supply voltage range of 2V to 30V (single supply) or ±1V to ±15V (dual supply). The LM339ADE4 is currently in Last Time Buy status, making equivalent and substitute parts essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	LM339ADE4
Manufacturer	Texas Instruments
Category	Linear
Number of Elements	4
Output Type	Open-Collector
Voltage - Supply, Single/Dual (±)	2V ~ 30V, ±1V ~ 15V
Voltage - Input Offset (Max)	3mV @ 30V
Current - Input Bias (Max)	0.25µA @ 5V
Current - Output (Typ)	20mA
Current - Quiescent (Max)	2.5mA
Operating Temperature	0°C ~ 70°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Last Time Buy

Substitute Part Grouping Explanation

Substitution eligibility for the LM339ADE4 is determined by the following critical parameters:

Primary Substitution Criteria:

Number of Elements: 4 independent comparators
Output Type: Open-Collector configuration
Package / Case: 14-SOIC (0.154", 3.90mm Width) surface-mount form factor
Voltage - Supply, Single/Dual (±): Minimum 2V ~ 30V (single) or ±1V ~ ±15V (dual)
Voltage - Input Offset (Max): 3mV or better
Current - Input Bias (Max): 0.25µA or lower
Current - Output (Typ): 16mA or higher
Current - Quiescent (Max): 2.5mA or lower
Operating Temperature: 0°C ~ 70°C minimum range
RoHS Status: ROHS3 Compliant

Substitute parts meeting all primary criteria are considered direct functional equivalents. Parts with extended operating temperature ranges or improved electrical characteristics remain compatible for standard applications.

Parameter Comparison

Part Number	Manufacturer	Output Type	Supply Voltage	Input Offset (Max)	Input Bias (Max)	Output Current (Typ)	Quiescent Current (Max)	Operating Temp	Package	Product Status
LM339ADE4	Texas Instruments	Open-Collector	2V~30V, ±1V~15V	3mV @ 30V	0.25µA @ 5V	20mA	2.5mA	0°C ~ 70°C	14-SOIC	Last Time Buy
LM339ADR	Texas Instruments	Open-Collector	2V~30V, ±1V~15V	3mV @ 30V	0.25µA @ 5V	20mA	2.5mA	0°C ~ 70°C	14-SOIC	Active
LM339AMX/NOPB	Texas Instruments	Open-Collector	2V~36V, ±1V~18V	2mV @ 30V	0.25µA @ 5V	16mA @ 5V	2.5mA	0°C ~ 70°C	14-SOIC	Active
LM339AM/NOPB	National Semiconductor	Open-Collector	2V~36V, ±1V~18V	2mV @ 30V	0.25µA @ 5V	16mA @ 5V	2.5mA	0°C ~ 70°C	14-SOIC	Active
LM339MX/NOPB	Texas Instruments	Open-Collector	2V~36V, ±1V~18V	5mV @ 30V	0.25µA @ 5V	16mA @ 5V	2.5mA	0°C ~ 70°C	14-SOIC	Active
LM339M/NOPB	Texas Instruments	Open-Collector	2V~36V, ±1V~18V	5mV @ 30V	0.25µA @ 5V	16mA @ 5V	2.5mA	0°C ~ 70°C	14-SOIC	Active
LM339AD	Motorola	CMOS, DTL, ECL, MOS, Open-Collector, TTL	2V~36V, ±1V~18V	2mV @ 5V	0.025µA @ 5V	16mA @ 5V	2mA	0°C ~ 70°C	14-SOIC	Active
LM139AD	Texas Instruments	Open-Collector, Open-Drain	2V~30V, ±1V~15V	2mV @ 30V	0.1µA @ 5V	20mA	2mA	-55°C ~ 125°C	14-SOIC	Last Time Buy
LP339M/NOPB	Texas Instruments	CMOS, MOS, Open-Collector	2V~36V, ±1V~18V	5mV @ 5V	0.025µA @ 5V	10mA @ 5V	100µA	0°C ~ 70°C	14-SOIC	Active
LP339MX/NOPB	Texas Instruments	CMOS, MOS, Open-Collector	2V~36V, ±1V~18V	5mV @ 5V	0.025µA @ 5V	10mA @ 5V	100µA	0°C ~ 70°C	14-SOIC	Active
BA2901SF-E2	Rohm Semiconductor	Open-Collector	2V~36V, ±1V~18V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2mA	-40°C ~ 105°C	14-SOP (0.173", 4.40mm)	Active

Engineering Selection Recommendations

Tier 1 - Direct Equivalents (Recommended Primary Substitutes):

LM339ADR is the preferred direct substitute. It is manufactured by Texas Instruments, maintains identical electrical specifications to the LM339ADE4, and is in Active product status with high inventory availability (105,100 pcs). The packaging and mounting characteristics are identical, ensuring seamless PCB integration without design modification.

Tier 2 - Compatible Substitutes (Extended Supply Voltage Range):

LM339AMX/NOPB, LM339AM/NOPB, and LM339MX/NOPB offer extended supply voltage ranges (2V~36V single, ±1V~18V dual) compared to the LM339ADE4 (2V~30V single, ±1V~15V dual). These parts maintain open-collector output configuration and identical package specifications. All are in Active product status with substantial inventory. LM339AMX/NOPB and LM339MX/NOPB are available in Cut Tape & Digi-Reel packaging, suitable for high-volume production.

Tier 3 - Alternative Architectures:

LM339AD (Motorola) provides improved input bias current (0.025µA vs. 0.25µA) and extended supply voltage range. Output type includes multiple logic families (CMOS, DTL, ECL, MOS, Open-Collector, TTL), offering flexibility for mixed-signal applications.

LM139AD (Texas Instruments) extends operating temperature range to -55°C ~ 125°C and includes open-drain output option alongside open-collector. This part is suitable for industrial and automotive temperature environments.

LP339M/NOPB and LP339MX/NOPB feature CMOS/MOS output architecture with significantly reduced quiescent current (100µA vs. 2.5mA), beneficial for low-power applications. Output current is reduced to 10mA, requiring circuit design verification.

BA2901SF-E2 (Rohm Semiconductor) provides extended operating temperature range (-40°C ~ 105°C) and is available in Tape & Reel packaging. Package dimensions differ slightly (0.173" vs. 0.154" width), requiring PCB footprint verification.

Compliance & Certification:

All recommended substitutes maintain ROHS3 compliance and REACH Unaffected status, consistent with the LM339ADE4. Moisture Sensitivity Level remains at MSL 1 (Unlimited) for all primary substitutes.

Frequently Asked Questions (FAQ)

Q: Can LM339ADR be used as a direct replacement for LM339ADE4 without circuit modification?

A: Yes. LM339ADR is electrically and mechanically identical to LM339ADE4. Both feature identical supply voltage ranges, input offset specifications, output current ratings, and 14-SOIC packaging. The primary difference is product status (Active vs. Last Time Buy) and packaging format (Cut Tape & Digi-Reel vs. Tube).

Q: What is the difference between LM339AMX/NOPB and LM339ADE4?

A: LM339AMX/NOPB offers extended supply voltage range (2V~36V single, ±1V~18V dual vs. 2V~30V single, ±1V~15V dual). Input offset voltage is improved (2mV vs. 3mV). Output current is reduced (16mA @ 5V vs. 20mA). All parts maintain open-collector output and 14-SOIC packaging. Circuit design must verify compatibility with reduced output current specifications.

Q: Are LP339 series parts compatible with LM339ADE4 applications?

A: LP339 series parts (LP339M/NOPB, LP339MX/NOPB) feature CMOS/MOS output architecture instead of standard open-collector. Quiescent current is significantly higher (100µA vs. 2.5mA), and output current is reduced (10mA vs. 20mA). These parts are suitable for low-power applications but require circuit design verification for output drive capability and power consumption.

Q: Can BA2901SF-E2 replace LM339ADE4 in existing designs?

A: BA2901SF-E2 is functionally compatible but requires PCB footprint verification. Package width differs (0.173" vs. 0.154"), and operating temperature range is extended (-40°C ~ 105°C vs. 0°C ~ 70°C). Electrical specifications are compatible. Design review is necessary to confirm PCB layout compatibility.

Q: What is the significance of Last Time Buy status for LM339ADE4?

A: Last Time Buy status indicates the manufacturer will discontinue production. Existing inventory is available for final orders, but long-term supply cannot be guaranteed. Substitution to Active-status parts (LM339ADR, LM339AMX/NOPB) is recommended for new designs and ongoing production to ensure supply continuity.

Q: How do input bias current differences affect circuit design?

A: LM339ADE4 specifies 0.25µA maximum input bias current. LM339AD and LP339 series specify 0.025µA, representing a 10-fold improvement. Lower input bias current reduces input offset voltage drift and improves precision in high-impedance signal conditioning circuits. Higher input bias current (as in standard LM339 variants) is acceptable for most general-purpose applications but may require input impedance consideration in precision measurement circuits.

Q: Are all substitute parts available in identical packaging formats?

A: No. LM339ADE4 is supplied in Tube packaging. LM339ADR is available in Cut Tape & Digi-Reel format. LM339AMX/NOPB and LM339MX/NOPB are available in Cut Tape & Digi-Reel. LM339M/NOPB is available in Tube. BA2901SF-E2 is available in Tape & Reel. Packaging format selection depends on production volume and handling requirements. Electrical specifications remain identical across packaging variants.

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