LM339DBRE4 Equivalent & Substitute Parts

Part Overview

The LM339DBRE4 is a general-purpose quad comparator IC manufactured by Texas Instruments, featuring open-collector outputs in a 14-SSOP surface-mount package. This device is discontinued at DiGi Electronics but remains available through inventory stock. The LM339DBRE4 operates across a wide supply voltage range (2V to 30V single supply, ±1V to ±15V dual supply) and is suitable for precision voltage comparison applications requiring low input offset voltage and moderate output current capability.

Due to the discontinued status of the LM339DBRE4, identifying equivalent and substitute parts ensures design continuity and supply chain reliability for new production runs and maintenance applications.

Key Parameters

Parameter	Value
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-SSOP (0.209", 5.30mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the LM339DBRE4 are qualified based on the following critical parameters:

Functional equivalence: Quad general-purpose comparator with open-collector output topology
Electrical compatibility: Supply voltage range, input offset voltage, input bias current, and output current specifications must meet or exceed the original part requirements
Package compatibility: Surface-mount 14-pin SSOP or compatible footprint
Compliance standards: RoHS3 compliance and MSL rating

Two substitute categories are identified:

Parametric Equivalent (LM339DBR): Identical electrical specifications and package, differing only in packaging format (Tape & Reel vs. individual packaging)
Manufacturer Recommended Substitute (BA2901YFV-CE2): Enhanced electrical performance with extended operating temperature range and automotive-grade qualification, packaged in 14-LSSOP form factor

Parameter Comparison

Parameter	LM339DBRE4	LM339DBR	BA2901YFV-CE2
Manufacturer	Texas Instruments	Texas Instruments	Rohm Semiconductor
Type	General Purpose	General Purpose	General Purpose
Number of Elements	4	4	4
Output Type	Open-Collector	Open-Collector	Open-Collector
Voltage - Supply, Single/Dual (±)	2V ~ 30V, ±1V ~ 15V	2V ~ 30V, ±1V ~ 15V	2V ~ 36V, ±1V ~ 18V
Voltage - Input Offset (Max)	5mV @ 30V	5mV @ 30V	4mV @ 5V
Current - Input Bias (Max)	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V
Current - Output (Typ)	20mA	20mA	16mA @ 5V
Current - Quiescent (Max)	2.5mA	2.5mA	2mA
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 125°C
Package / Case	14-SSOP	14-SSOP	14-LSSOP
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Product Status	Discontinued	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Grade	Commercial	Commercial	Automotive (AEC-Q100)

Engineering Selection Recommendations

LM339DBR is the direct parametric equivalent for applications requiring identical electrical performance and pin compatibility. This part maintains active product status with Texas Instruments, ensuring long-term availability and supply chain stability. The LM339DBR is suitable for direct replacement in existing designs without circuit modification.

BA2901YFV-CE2 is recommended for applications requiring extended operating temperature range (-40°C to 125°C) or automotive-grade qualification (AEC-Q100). This Rohm Semiconductor device provides superior input offset voltage performance (4mV vs. 5mV) and lower quiescent current (2mA vs. 2.5mA). The 14-LSSOP package is mechanically compatible with 14-SSOP footprints on standard PCB layouts. Selection of BA2901YFV-CE2 is appropriate when design specifications demand automotive-grade reliability or extended temperature operation beyond the commercial grade range of the original LM339DBRE4.

Frequently Asked Questions (FAQ)

Q: Can LM339DBR be used as a direct replacement for LM339DBRE4?

A: Yes. The LM339DBR is a parametric equivalent with identical electrical specifications, supply voltage range, input/output characteristics, and 14-SSOP package. The only difference is packaging format (Tape & Reel). No circuit modifications are required.

Q: What are the key differences between LM339DBR and BA2901YFV-CE2?

A: The BA2901YFV-CE2 offers extended operating temperature range (-40°C to 125°C vs. 0°C to 70°C), lower input offset voltage (4mV vs. 5mV), and automotive-grade qualification (AEC-Q100). The BA2901YFV-CE2 is packaged in 14-LSSOP form factor, which is mechanically compatible with 14-SSOP PCB layouts. Output current is slightly lower (16mA vs. 20mA).

Q: Is the 14-LSSOP package footprint compatible with 14-SSOP designs?

A: The 14-LSSOP (0.173", 4.40mm width) and 14-SSOP (0.209", 5.30mm width) packages have different pitch and body dimensions. While both are surface-mount 14-pin packages, PCB footprint compatibility must be verified. Consult package datasheets for exact land pattern requirements before substitution.

Q: Are both substitute parts RoHS3 compliant?

A: Yes. Both LM339DBR and BA2901YFV-CE2 are ROHS3 compliant with MSL rating of 1 (Unlimited), matching the environmental compliance profile of the original LM339DBRE4.

Q: Which substitute should be selected for new production designs?

A: For standard commercial applications within 0°C to 70°C operating range, LM339DBR is the preferred choice due to identical specifications and established supply availability. For applications requiring extended temperature operation or automotive qualification, BA2901YFV-CE2 is the appropriate selection.

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