LM339NE4 Equivalent & Substitute Parts

Part Overview

The LM339NE4 is a general-purpose comparator IC manufactured by Texas Instruments, featuring four independent differential comparators with open-collector outputs in a 14-DIP package. This device is discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	LM339NE4
Manufacturer	Texas Instruments
Category	Linear
Type	General Purpose Comparator
Number of Elements	4
Output Type	Open-Collector
Voltage - Supply, Single/Dual (±)	2V ~ 30V, ±1V ~ 15V
Voltage - Input Offset (Max)	5mV @ 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-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant
Product Status	Discontinued at DiGi Electronics

Substitute Part Grouping Explanation

Substitution for the LM339NE4 is determined by the following critical parameters:

Number of Elements: 4 independent comparators
Output Type: Open-Collector configuration
Package: 14-DIP (0.300", 7.62mm) through-hole mounting
Voltage Supply Range: Minimum 2V ~ 30V single supply or ±1V ~ 15V dual supply
Input Offset Voltage: Maximum 5mV @ 30V
Input Bias Current: Maximum 0.25µA @ 5V
Output Current: Typical 20mA capability
Quiescent Current: Maximum 2.5mA
Operating Temperature: 0°C ~ 70°C range
RoHS Compliance: ROHS3 Compliant

Substitute parts are grouped into two categories: MFR Recommended (direct functional replacements with enhanced specifications) and Parametric Equivalent (identical electrical and mechanical specifications).

Parameter Comparison

Parameter	LM339NE4 (Main)	LM339N (MFR Recommended)	LM339AN/NOPB (MFR Recommended)	LM339NE3 (Parametric Equivalent)
Manufacturer	Texas Instruments	STMicroelectronics	Texas Instruments	Texas Instruments
Number of Elements	4	4	4	4
Output Type	Open-Collector	CMOS, DTL, ECL, MOS, Open-Collector, TTL	Open-Collector	Open-Collector
Voltage - Supply, Single/Dual (±)	2V ~ 30V, ±1V ~ 15V	2V ~ 32V, ±1V ~ 16V	2V ~ 36V, ±1V ~ 18V	2V ~ 30V, ±1V ~ 15V
Voltage - Input Offset (Max)	5mV @ 30V	5mV @ 30V	2mV @ 5V	5mV @ 30V
Current - Input Bias (Max)	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V
Current - Output (Typ)	20mA	16mA @ 5V	16mA @ 5V	20mA
Current - Quiescent (Max)	2.5mA	2.5mA	2.5mA	2.5mA
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	-25°C ~ 85°C	0°C ~ 70°C
Package / Case	14-DIP (0.300", 7.62mm)	14-DIP (0.300", 7.62mm)	14-DIP (0.300", 7.62mm)	14-DIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Discontinued at DiGi Electronics	Obsolete	Active	Active

Engineering Selection Recommendations

LM339NE3 is the primary parametric equivalent, offering identical electrical specifications and operating temperature range to the LM339NE4. Both devices are manufactured by Texas Instruments and maintain the same 14-DIP package configuration. The LM339NE3 is currently active in production, ensuring long-term availability.

LM339AN/NOPB is the recommended MFR substitute when extended operating temperature range is required. This Texas Instruments device supports -25°C ~ 85°C operation compared to the 0°C ~ 70°C range of the LM339NE4, with improved input offset voltage specification (2mV @ 5V). The LM339AN/NOPB maintains active product status and is available in production quantities.

LM339N (STMicroelectronics) is an alternative MFR substitute with expanded supply voltage range (2V ~ 32V, ±1V ~ 16V) and multiple output type compatibility. However, this device is classified as obsolete, limiting its suitability for new designs requiring long-term component availability.

All substitute parts maintain ROHS3 compliance and are suitable for through-hole PCB assembly applications requiring 14-DIP package footprints.

Frequently Asked Questions (FAQ)

Q: Can LM339NE3 be used as a direct replacement for LM339NE4?

A: Yes. The LM339NE3 is a parametric equivalent with identical electrical specifications, operating temperature range, and package configuration. Both devices are manufactured by Texas Instruments in 14-DIP through-hole packages and are ROHS3 compliant.

Q: What is the difference between LM339AN/NOPB and LM339NE4?

A: The LM339AN/NOPB offers an extended operating temperature range (-25°C ~ 85°C versus 0°C ~ 70°C) and improved input offset voltage specification (2mV @ 5V versus 5mV @ 30V). Supply voltage range is also expanded (2V ~ 36V, ±1V ~ 18V). The LM339AN/NOPB is currently in active production status.

Q: Are all substitute parts compatible with existing PCB designs for LM339NE4?

A: Yes. All substitute parts use the same 14-DIP (0.300", 7.62mm) through-hole package and pin configuration, ensuring direct PCB footprint compatibility without layout modifications.

Q: Why is LM339N listed as obsolete?

A: The LM339N (STMicroelectronics) is classified as obsolete, indicating discontinued production. While functionally compatible, this part is not recommended for new designs due to limited availability and potential supply chain constraints.

Q: What are the key parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: four independent comparators, open-collector output type, 14-DIP package, supply voltage range of at least 2V ~ 30V (single) or ±1V ~ 15V (dual), input offset voltage maximum 5mV, input bias current maximum 0.25µA, output current capability of 20mA, and quiescent current maximum 2.5mA.

Q: Can LM339NE4 be replaced in applications requiring extended temperature operation?

A: Yes. The LM339AN/NOPB supports -25°C ~ 85°C operation, making it suitable for applications requiring extended temperature range beyond the 0°C ~ 70°C specification of the LM339NE4.

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