LM339APWRG4 Equivalent & Substitute Parts

Part Overview

The LM339APWRG4 is a general-purpose quad comparator IC manufactured by Texas Instruments in a 14-TSSOP surface-mount package. This device features four independent open-collector comparators suitable for analog signal comparison applications across a wide supply voltage range of 2V to 30V (single supply) or ±1V to ±15V (dual supply). The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications. Substitute parts maintain the same functional architecture, package footprint, and electrical performance characteristics while offering improved availability or extended operating temperature ranges.

Key Parameters

Parameter	Value
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-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the LM339APWRG4 is determined by the following critical parameters:

Functional Equivalence: All substitute parts must contain four independent comparators with open-collector output configuration.

Package Compatibility: All substitutes use the 14-TSSOP surface-mount package with identical 0.173" (4.40mm) width, ensuring direct PCB footprint compatibility without layout modifications.

Electrical Performance: Substitute parts must operate within the specified supply voltage range (2V ~ 30V single, ±1V ~ ±15V dual) and maintain comparable input offset voltage, input bias current, and output current specifications.

Compliance & Certification: All substitutes maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing and storage processes.

Substitutes are grouped into two categories: parametric equivalents (identical electrical specifications) and manufacturer-recommended alternatives (functionally equivalent with minor specification variations acceptable for general-purpose applications).

Parameter Comparison

Part Number	Manufacturer	Product Status	Supply Voltage	Input Offset (Max)	Input Bias (Max)	Output Current (Typ)	Quiescent Current (Max)	Operating Temp	Package
LM339APWRG4	Texas Instruments	Discontinued	2V ~ 30V, ±1V ~ 15V	3mV @ 30V	0.25µA @ 5V	20mA	2.5mA	0°C ~ 70°C	14-TSSOP
LM339APWR	Texas Instruments	Active	2V ~ 30V, ±1V ~ 15V	3mV @ 30V	0.25µA @ 5V	20mA	2.5mA	0°C ~ 70°C	14-TSSOP
BA2901SFV-E2	Rohm Semiconductor	Active	2V ~ 36V, ±1V ~ 18V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2mA	-40°C ~ 105°C	14-LSSOP
LM239APT	STMicroelectronics	Active	2V ~ 32V, ±1V ~ 16V	2mV @ 30V	0.1µA @ 5V	16mA @ 5V	2mA	-40°C ~ 105°C	14-TSSOP
LM239PT	STMicroelectronics	Active	2V ~ 32V, ±1V ~ 16V	5mV @ 30V	0.25µA @ 5V	16mA @ 5V	2mA	-40°C ~ 105°C	14-TSSOP
LM2901PT	STMicroelectronics	Active	2V ~ 32V, ±1V ~ 16V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	14-TSSOP
LM2901YPT	STMicroelectronics	Active	2V ~ 32V, ±1V ~ 16V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	14-TSSOP
LM339APT	STMicroelectronics	Active	2V ~ 32V, ±1V ~ 16V	2mV @ 30V	0.1µA @ 5V	16mA @ 5V	2.5mA	0°C ~ 70°C	14-TSSOP
LM339DTBR2G	onsemi	Active	3V ~ 36V, ±1.5V ~ 18V	5mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	0°C ~ 70°C	14-TSSOP
LM339PT	STMicroelectronics	Active	2V ~ 32V, ±1V ~ 16V	5mV @ 30V	0.25µA @ 5V	16mA @ 5V	2.5mA	0°C ~ 70°C	14-TSSOP

Engineering Selection Recommendations

Primary Substitute - Parametric Equivalent: LM339APWR (Texas Instruments) is the direct parametric equivalent to the LM339APWRG4, offering identical electrical specifications and operating temperature range. This part maintains active product status with high inventory availability (212,800 units), making it the preferred choice for direct replacement in existing designs without circuit modification.

Temperature-Extended Alternatives: LM239APT, LM239PT, LM2901PT, and LM2901YPT (STMicroelectronics) extend the operating temperature range to -40°C to 105°C or -40°C to 125°C, suitable for applications requiring wider temperature performance. These parts maintain 14-TSSOP package compatibility and ROHS3 compliance. LM2901YPT includes AEC-Q100 automotive qualification for applications requiring automotive-grade reliability.

Extended Supply Voltage Range: BA2901SFV-E2 (Rohm Semiconductor) and LM339DTBR2G (onsemi) support higher maximum supply voltages (36V and 18V dual supply respectively) compared to the original specification. These parts are suitable for applications requiring extended voltage headroom while maintaining open-collector output configuration and surface-mount package compatibility.

Temperature-Matched Substitutes: LM339APT and LM339PT (STMicroelectronics) maintain the original 0°C to 70°C operating temperature range while offering active product status and improved availability. LM339APT provides superior input offset voltage (2mV) and lower input bias current (0.1µA) compared to the original specification.

All recommended substitutes maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing processes and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can LM339APWR be used as a direct replacement for LM339APWRG4? A: Yes. LM339APWR is a parametric equivalent with identical electrical specifications, supply voltage range, and operating temperature. The only difference is packaging format (Cut Tape & Digi-Reel vs. the discontinued variant). Direct PCB substitution is possible without circuit modification.

Q: What is the difference between 14-TSSOP and 14-LSSOP packages? A: Both packages have identical 0.173" (4.40mm) width and pin pitch, ensuring PCB footprint compatibility. TSSOP and LSSOP refer to different manufacturing process variants from different manufacturers. BA2901SFV-E2 uses 14-LSSOP (Rohm variant) while most other substitutes use 14-TSSOP (standard variant). Both are mechanically and electrically interchangeable on the same PCB layout.

Q: Are there temperature limitations when substituting with extended-range parts? A: No. Extended-range parts (LM239APT, LM2901PT operating to 125°C) are backward-compatible with applications designed for 0°C to 70°C operation. The wider temperature range provides additional design margin without affecting performance in standard temperature environments.

Q: Does supply voltage range affect substitution compatibility? A: Supply voltage range differences do not prevent substitution if the application operates within the overlapping voltage window. For example, BA2901SFV-E2 supports 2V to 36V (vs. 2V to 30V original), making it suitable for applications using up to 30V. However, if your circuit requires the full 36V capability, only BA2901SFV-E2 or LM339DTBR2G should be selected.

Q: What is the significance of input offset voltage differences? A: Input offset voltage (2mV to 7mV across substitutes) determines comparator accuracy in precision applications. Lower values (2mV for LM239APT, LM339APT) provide better accuracy. For general-purpose threshold detection, differences within 5mV are typically acceptable. Critical precision applications should verify offset voltage performance against circuit requirements.

Q: Is LM2901YPT suitable for non-automotive applications? A: Yes. LM2901YPT includes AEC-Q100 automotive qualification, but this certification does not restrict use in non-automotive applications. It indicates enhanced reliability testing and is fully compatible with standard industrial and consumer applications.

Q: Can I use BA2901SFV-E2 in a circuit designed for LM339APWRG4? A: Yes, with voltage range verification. BA2901SFV-E2 supports higher supply voltages (36V maximum vs. 30V) and extended temperature range (-40°C to 105°C). The 14-LSSOP package is mechanically compatible with 14-TSSOP PCB layouts. Verify that your application does not require the specific 20mA output current of the original part, as BA2901SFV-E2 provides 16mA typical output current.

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