LM339DR Equivalent & Substitute Parts

Part Overview

The LM339DR is a general-purpose quad comparator IC manufactured by Rohm Semiconductor in 14-SOIC surface mount packaging. This device integrates four independent voltage comparators with CMOS, MOS, Open-Collector, and TTL output types, operating across a wide supply voltage range of 2V to 36V (single supply) or ±1V to ±18V (dual supply). The LM339DR is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	LM339DR
Manufacturer	Rohm Semiconductor
Number of Elements	4
Output Type	CMOS, MOS, Open-Collector, TTL
Voltage - Supply, Single/Dual (±)	2V ~ 36V, ±1V ~ 18V
Voltage - Input Offset (Max)	7mV @ 5V
Current - Input Bias (Max)	0.25µA @ 5V
Current - Output (Typ)	16mA @ 5V
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)

Substitute Part Grouping Explanation

Substitution for the LM339DR is determined by the following critical parameters:

Number of Elements: Must be 4 independent comparators
Package Type: 14-SOIC surface mount form factor (0.154", 3.90mm width)
Output Type Compatibility: CMOS, MOS, Open-Collector, or TTL output configurations
Supply Voltage Range: Minimum 2V to 36V (single) or ±1V to ±18V (dual)
Input Offset Voltage: Maximum 7mV @ 5V or better
Input Bias Current: Maximum 0.25µA @ 5V or better
Output Current: Minimum 16mA @ 5V
Quiescent Current: Maximum 2.5mA or better
RoHS Compliance: ROHS3 Compliant

Substitute parts are categorized as Parametric Equivalent, Upgrade, or Similar based on how closely they match these criteria and their product status.

Parameter Comparison

Part Number	Manufacturer	Product Status	Output Type	Supply Voltage	Input Offset (Max)	Input Bias (Max)	Output Current (Typ)	Quiescent (Max)	Operating Temp	Package
LM339DR	Rohm Semiconductor	Obsolete	CMOS, MOS, Open-Collector, TTL	2V~36V, ±1V~18V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	0°C ~ 70°C	14-SOIC
LM339DT	STMicroelectronics	Active	CMOS, DTL, ECL, MOS, Open-Collector, TTL	2V~32V, ±1V~16V	5mV @ 30V	0.25µA @ 5V	16mA @ 5V	2.5mA	0°C ~ 70°C	14-SOIC
AS339AMTR-E1	Diodes Incorporated	Active	Open-Collector	2V~36V, ±1V~18V	3mV @ 5V	0.25µA @ 5V	16mA @ 5V	2mA	-40°C ~ 85°C	14-SOIC
AS339MTR-E1	Diodes Incorporated	Active	Open-Collector	2V~36V, ±1V~18V	5mV @ 5V	0.25µA @ 5V	16mA @ 5V	2mA	-40°C ~ 85°C	14-SOIC
AS339MTR-G1	Diodes Incorporated	Active	Open-Collector	2V~36V, ±1V~18V	5mV @ 5V	0.25µA @ 5V	16mA	2mA	-40°C ~ 85°C	14-SOIC
LM2901HYDT	STMicroelectronics	Active	CMOS, DTL, ECL, MOS, Open-Collector, TTL	2V~36V, ±1V~18V	—	—	—	2.5mA	—	14-SOIC
LM139AD	Texas Instruments	Last Time Buy	Open-Collector, Open-Drain	2V~30V, ±1V~15V	2mV @ 30V	0.1µA @ 5V	20mA	2mA	-55°C ~ 125°C	14-SOIC
LM139ADT	STMicroelectronics	Active	—	2V~32V, ±1V~16V	2mV @ 30V	0.1µA @ 5V	16mA @ 5V	2mA	-55°C ~ 125°C	14-SOIC
LM139DT	STMicroelectronics	Active	—	2V~32V, ±1V~16V	5mV @ 30V	0.25µA @ 5V	16mA @ 5V	2mA	-55°C ~ 125°C	14-SOIC
LM139J/PB	Texas Instruments	Active	Open-Collector, Open-Drain	2V~36V, ±1V~18V	5mV @ 30V	0.1µA @ 5V	16mA @ 5V	2.5mA	-55°C ~ 125°C	14-CDIP
LM239ADT	STMicroelectronics	Active	CMOS, DTL, ECL, MOS, Open-Collector, TTL	2V~32V, ±1V~16V	2mV @ 30V	0.1µA @ 5V	16mA @ 5V	2mA	-40°C ~ 105°C	14-SOIC

Engineering Selection Recommendations

Parametric Equivalent (Direct Replacement)

LM339DT (STMicroelectronics) is the primary parametric equivalent. It maintains the same 14-SOIC package, four-element configuration, and compatible output types. The supply voltage range is slightly reduced (2V~32V vs. 2V~36V), but input offset voltage is improved (5mV @ 30V). Product status is Active with ROHS3 compliance and MSL 1 rating.

Upgrade Options (Enhanced Performance)

AS339AMTR-E1, AS339MTR-E1, and AS339MTR-G1 (Diodes Incorporated) offer improved input offset voltage (3mV to 5mV) and lower quiescent current (2mA vs. 2.5mA). These devices maintain the full 2V~36V supply range and 14-SOIC package. All are Active status with ROHS3 compliance. AS339AMTR-E1 and AS339MTR-E1 differ in packaging format (Tape & Reel vs. Cut Tape). AS339MTR-G1 has MSL 3 rating versus MSL 1 for the others.

LM2901HYDT (STMicroelectronics) is an automotive-grade option (AEC-Q100 qualified) with full supply voltage range (2V~36V, ±1V~18V) and 2.5mA quiescent current. It is Active status with ROHS3 compliance but carries MSL 3 rating.

Similar Parts (Extended Temperature Range)

LM139 series devices (LM139AD, LM139ADT, LM139DT, LM139J/PB) provide extended operating temperature ranges (-55°C to 125°C or -40°C to 105°C) compared to the LM339DR (0°C to 70°C). LM139AD and LM139J/PB are Last Time Buy or Active status. LM139ADT and LM139DT are Active. LM139J/PB uses 14-CDIP through-hole packaging rather than surface mount.

LM239ADT (STMicroelectronics) offers the widest operating temperature range (-40°C to 105°C) with improved input offset voltage (2mV @ 30V) and lower input bias current (0.1µA @ 5V). It is Active status with ROHS3 compliance and MSL 1 rating.

Frequently Asked Questions (FAQ)

Q: Can I directly replace LM339DR with LM339DT?

A: Yes. LM339DT is a parametric equivalent with identical package (14-SOIC), element count (4), and compatible electrical specifications. The supply voltage range is slightly reduced (32V vs. 36V maximum), but this does not affect most applications. LM339DT is Active status, making it the recommended direct replacement.

Q: What is the difference between AS339AMTR-E1 and AS339MTR-E1?

A: Both are Diodes Incorporated AS339 devices with identical electrical specifications. The difference is packaging format: AS339AMTR-E1 is supplied in Tape & Reel (TR), while AS339MTR-E1 is supplied in Cut Tape (CT) & Digi-Reel. AS339MTR-E1 has MSL 3 rating (168 hours) versus MSL 1 (unlimited) for AS339AMTR-E1.

Q: Why would I choose an LM139 variant over an LM339 variant?

A: LM139 devices provide extended operating temperature ranges (-55°C to 125°C or -40°C to 105°C) suitable for industrial and automotive applications. The LM339DR operates only 0°C to 70°C. If your application requires wider temperature operation, LM139ADT or LM239ADT are appropriate selections.

Q: Is LM2901HYDT suitable for my application?

A: LM2901HYDT is automotive-grade (AEC-Q100 qualified) with full supply voltage compatibility (2V~36V, ±1V~18V). It is appropriate only if your application requires automotive qualification. Standard commercial applications should use LM339DT or AS339 series devices.

Q: Can I use LM139J/PB as a replacement?

A: LM139J/PB is functionally compatible but uses 14-CDIP through-hole packaging instead of 14-SOIC surface mount. This requires different PCB layout and assembly process. Use only if your design supports through-hole components.

Q: What does MSL rating mean for my selection?

A: Moisture Sensitivity Level (MSL) indicates how long a component can be exposed to ambient conditions before soldering. MSL 1 (unlimited) allows indefinite storage. MSL 3 (168 hours) requires controlled storage conditions. For standard manufacturing, MSL 1 rated parts (LM339DT, AS339AMTR-E1, LM239ADT) are preferred.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the LM339DR specification.

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