LM139AWG/883 Equivalent & Substitute Parts

Part Overview

The LM139AWG/883 is a low-power, low-offset voltage general-purpose comparator manufactured by Texas Instruments. This device integrates four independent comparators in a single 14-pin package with open-collector, open-drain output configuration. The part operates across a wide supply voltage range (5V ~ 30V single supply, ±2.5V ~ 15V dual supply) and is designed for precision voltage comparison applications requiring minimal input offset voltage and low quiescent current consumption.

The LM139AWG/883 maintains Active product status with 1987 pieces in current inventory. This part is ROHS3 compliant and carries unlimited moisture sensitivity rating (MSL 1), making it suitable for standard manufacturing environments. Equivalent and substitute parts are identified based on matching functional characteristics, electrical performance parameters, and package compatibility within the general-purpose comparator category.

Key Parameters

Parameter	Value	Specification Basis
Manufacturer	Texas Instruments	Original equipment manufacturer
Part Number	LM139AWG/883	Full device designation
Category	Linear Comparator	Functional classification
Type	General Purpose	Application class
Number of Elements	4	Quad comparator configuration
Output Type	Open-Collector, Open-Drain	Output stage configuration
Voltage - Supply (Single/Dual)	5V ~ 30V / ±2.5V ~ 15V	Operating supply range
Voltage - Input Offset (Max)	2mV @ 30V	DC precision specification
Current - Input Bias (Max)	1000pA @ 5V	Input stage loading
Current - Output (Typ)	20mA	Output drive capability
Current - Quiescent (Max)	2mA	Power consumption at rest
CMRR / PSRR (Typ)	70dB CMRR / 60dB PSRR	Noise rejection performance
Propagation Delay (Max)	1.3µs (Typ)	Response time specification
Hysteresis	10mV	Threshold window
Operating Temperature	-55°C ~ 125°C	Functional temperature range
Package / Case	14-CSOIC (0.250", 6.35mm Width)	Surface mount ceramic package
Mounting Type	Surface Mount	PCB assembly method
RoHS Status	ROHS3 Compliant	Environmental compliance
Moisture Sensitivity Level	1 (Unlimited)	Handling and storage classification

Substitute Part Grouping Explanation

Substitute parts for the LM139AWG/883 are identified through strict alignment of the following critical parameters:

Functional Equivalence Criteria:

Number of Elements: 4 (quad comparator configuration)
Type: General Purpose comparator
Output Type: Open-Collector, Open-Drain capability
Category: Linear comparator devices

Electrical Performance Alignment:

Voltage - Input Offset (Max): 2mV to 7mV @ 5V or 30V (acceptable tolerance band)
Current - Input Bias (Max): 0.1µA to 1000pA @ 5V (low-bias specification)
Current - Output (Typ): 16mA to 20mA (output drive range)
Current - Quiescent (Max): 2mA to 2.5mA (low-power operation)
Operating Temperature: Minimum -40°C to -55°C, Maximum 85°C to 125°C (overlapping ranges)

Supply Voltage Compatibility:

Single Supply: 2V ~ 36V range (encompasses 5V ~ 30V requirement)
Dual Supply: ±1V ~ 18V range (encompasses ±2.5V ~ 15V requirement)

Package and Mounting Compatibility:

Surface Mount packages: 14-SOIC, 14-TSSOP, 14-CSOIC (all 14-pin configurations)
Through-Hole alternative: 14-CDIP (for legacy or specific application requirements)

Compliance and Status:

Product Status: Active (current production)
RoHS Status: ROHS3 Compliant (environmental requirement match)
Moisture Sensitivity: MSL 1 (Unlimited) or equivalent

Substitutes are grouped by package type and manufacturer to facilitate selection based on specific assembly and sourcing requirements.

Parameter Comparison

Parameter	LM139AWG/883 (Main)	LM139J/PB	LM139ADT	LM239ADT	LM239DR2G	LM239DT	LM239DTBR2G	LM2901DR2G	LM2901EDR2G	LM2901PT	LM2901YPT
Manufacturer	Texas Instruments	Texas Instruments	STMicroelectronics	STMicroelectronics	onsemi	STMicroelectronics	onsemi	onsemi	onsemi	STMicroelectronics	STMicroelectronics
Number of Elements	4	4	4	4	4	4	4	4	4	4	4
Output Type	Open-Collector, Open-Drain	Open-Collector, Open-Drain	Open-Collector, Open-Drain	CMOS, DTL, ECL, MOS, Open-Collector, TTL	CMOS, Open-Collector, TTL	CMOS, DTL, ECL, MOS, Open-Collector, TTL	CMOS, Open-Collector, TTL	CMOS, Open-Collector, TTL	Not specified	CMOS, DTL, ECL, MOS, Open-Collector, TTL	CMOS, DTL, ECL, MOS, Open-Collector, TTL
Voltage - Supply Single (Min-Max)	5V ~ 30V	2V ~ 36V	2V ~ 32V	2V ~ 32V	3V ~ 36V	2V ~ 32V	3V ~ 36V	3V ~ 36V	3V ~ 36V	2V ~ 32V	2V ~ 32V
Voltage - Supply Dual (Min-Max)	±2.5V ~ 15V	±1V ~ 18V	±1V ~ 16V	±1V ~ 16V	±1.5V ~ 18V	±1V ~ 16V	±1.5V ~ 18V	±1.5V ~ 18V	±1.5V ~ 18V	±1V ~ 16V	±1V ~ 16V
Voltage - Input Offset (Max)	2mV @ 30V	5mV @ 30V	2mV @ 30V	2mV @ 30V	5mV @ 5V	5mV @ 30V	5mV @ 5V	7mV @ 5V	7mV @ 5V	7mV @ 5V	7mV @ 5V
Current - Input Bias (Max)	1000pA @ 5V	0.1µA @ 5V	0.1µA @ 5V	0.1µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V
Current - Output (Typ)	20mA	16mA @ 5V	16mA @ 5V	16mA @ 5V	16mA @ 5V	16mA @ 5V	16mA @ 5V	16mA @ 5V	16mA @ 5V	16mA @ 5V	16mA @ 5V
Current - Quiescent (Max)	2mA	2.5mA	2mA	2mA	2.5mA	2mA	2.5mA	2.5mA	2mA	2.5mA	2.5mA
Operating Temperature (Min-Max)	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 105°C	-25°C ~ 85°C	-40°C ~ 105°C	-25°C ~ 85°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	14-CSOIC (0.250", 6.35mm)	14-CDIP (0.300", 7.62mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-TSSOP (0.173", 4.40mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-TSSOP (0.173", 4.40mm)	14-TSSOP (0.173", 4.40mm)
Mounting Type	Surface Mount	Through Hole	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

LM139ADT (STMicroelectronics) and LM239DT (STMicroelectronics) represent the closest functional equivalents to the LM139AWG/883. Both devices maintain identical input offset voltage specifications (2mV @ 30V for LM139ADT, 5mV @ 30V for LM239DT), operate across overlapping supply voltage ranges, and are available in surface-mount 14-SOIC packages. These parts carry Active product status and ROHS3 compliance. LM139ADT provides the narrowest temperature range (-55°C ~ 125°C), matching the original specification exactly. Both parts are manufactured by STMicroelectronics and carry unlimited moisture sensitivity rating.

Secondary Substitutes (Functional Equivalence with Package Variation):

LM239DTBR2G (onsemi) and LM2901PT (STMicroelectronics) offer functional equivalence with alternative surface-mount packages. LM239DTBR2G uses a 14-TSSOP package (0.173" width) versus the original 14-CSOIC (0.250" width), providing a more compact footprint. LM2901PT similarly employs 14-TSSOP packaging and extends the operating temperature range to -40°C ~ 125°C. Both maintain Active product status and ROHS3 compliance.

Through-Hole Alternative:

LM139J/PB (Texas Instruments) provides a through-hole 14-CDIP package option for applications requiring traditional PCB assembly methods. This part maintains identical manufacturer origin and operating temperature range (-55°C ~ 125°C) but requires different PCB layout and assembly procedures compared to surface-mount alternatives.

Extended Temperature Range Option:

LM2901YPT (STMicroelectronics) offers automotive-grade qualification (AEC-Q100) with extended operating temperature range (-40°C ~ 125°C) in 14-TSSOP packaging. This part is suitable for applications requiring automotive-level reliability and temperature performance.

Selection Basis: All recommended substitutes maintain Active product status, ROHS3 environmental compliance, and MSL 1 moisture sensitivity rating. Selection among these alternatives depends on specific package requirements (SOIC, TSSOP, or CDIP), temperature range needs, and sourcing availability. No additional testing or verification is required when substituting within this qualified list, provided package footprint compatibility is confirmed for the target PCB design.

Frequently Asked Questions (FAQ)

Q1: Can LM139ADT directly replace LM139AWG/883 in a surface-mount application?

A: Yes. LM139ADT is a direct functional equivalent manufactured by STMicroelectronics. Both devices feature four independent comparators with open-collector output, identical input offset voltage (2mV @ 30V), matching operating temperature range (-55°C ~ 125°C), and surface-mount 14-SOIC packaging. The primary difference is package width: LM139ADT uses 14-SOIC (0.154" width) versus LM139AWG/883 14-CSOIC (0.250" width). PCB footprint compatibility must be verified before substitution.

Q2: What is the difference between LM139 and LM239 series comparators?

A: Both LM139 and LM239 are quad general-purpose comparators with four independent elements and open-collector output capability. The primary distinction lies in input bias current specifications: LM139 devices specify 0.1µA to 1000pA input bias current, while LM239 devices specify 0.25µA input bias current. Both series operate across compatible supply voltage ranges and maintain equivalent output drive capability (16mA to 20mA). Selection between series depends on specific input bias current requirements for the application.

Q3: Are LM2901 series comparators compatible substitutes for LM139AWG/883?

A: LM2901 series devices (LM2901DR2G, LM2901EDR2G, LM2901PT, LM2901YPT) are functionally compatible substitutes with the following considerations: All LM2901 parts maintain four-element quad comparator configuration with open-collector output and compatible supply voltage ranges. Input offset voltage specifications are slightly higher (7mV @ 5V versus 2mV @ 30V for the original). Operating temperature ranges vary by specific part number. LM2901 devices are suitable for applications where the higher input offset voltage is acceptable within system tolerance margins.

Q4: What package options are available for LM139AWG/883 substitutes?

A: Substitute parts are available in three primary package configurations: 14-SOIC (0.154" width) used by LM139ADT, LM239ADT, LM239DT, LM2901DR2G, and LM2901EDR2G; 14-TSSOP (0.173" width) used by LM239DTBR2G, LM2901PT, and LM2901YPT; and 14-CDIP (0.300" width) through-hole package used by LM139J/PB. All packages contain identical 14-pin configurations with the same pin assignments. Package selection depends on PCB assembly method (surface mount versus through-hole) and available board space.

Q5: Does supply voltage range affect substitute part selection?

A: Supply voltage range compatibility is a primary selection criterion. The original LM139AWG/883 operates at 5V ~ 30V (single supply) or ±2.5V ~ 15V (dual supply). All listed substitutes operate across equal or wider voltage ranges: 2V ~ 36V single supply and ±1V ~ 18V dual supply. This ensures substitutes function correctly in any circuit designed for the original part. However, applications operating at the extreme limits of the original specification (5V minimum or 30V maximum) should verify substitute performance at those specific voltages.

Q6: Are there temperature range limitations when substituting comparator parts?

A: Temperature range compatibility depends on specific application requirements. The original LM139AWG/883 operates from -55°C to 125°C. Most substitutes maintain this range or a subset thereof. LM239ADT and LM239DT operate -40°C ~ 105°C, which is narrower than the original. LM2901PT and LM2901YPT extend to -40°C ~ 125°C. For applications requiring the full -55°C ~ 125°C range, LM139J/PB, LM139ADT, or LM2901YPT are appropriate selections. For standard industrial temperature ranges (-40°C ~ 85°C), all substitutes are suitable.

Q7: What is the significance of ROHS3 compliance for substitute selection?

A: All listed substitute parts carry ROHS3 compliance certification, matching the environmental compliance status of the original LM139AWG/883. ROHS3 compliance indicates the device meets Restriction of Hazardous Substances Directive requirements and contains no lead, cadmium, hexavalent chromium, or other restricted materials. This compliance status is mandatory for applications subject to environmental regulations in the European Union and other jurisdictions. Substitutes maintain equivalent compliance levels, ensuring regulatory requirements are satisfied.

Q8: How does moisture sensitivity level (MSL) affect substitute part handling?

A: All substitute parts carry MSL 1 (Unlimited) rating, identical to the original LM139AWG/883. MSL 1 classification indicates unlimited shelf life and no special moisture control requirements during storage or handling. These parts do not require dry-pack storage, desiccant bags, or moisture-barrier packaging. Standard warehouse storage conditions are acceptable. This uniform MSL rating across all substitutes eliminates moisture sensitivity as a differentiation factor in substitute selection.

Q9: Can LM139J/PB through-hole package substitute for surface-mount LM139AWG/883?

A: LM139J/PB is functionally equivalent to LM139AWG/883 but uses through-hole 14-CDIP packaging instead of surface-mount 14-CSOIC. Electrical performance is identical: four comparators, open-collector output, 2mV input offset voltage, -55°C ~ 125°C operating range. However, through-hole substitution requires different PCB layout, different assembly equipment, and different soldering processes. Through-hole substitution is appropriate only for legacy designs or applications specifically requiring through-hole components. New designs should use surface-mount alternatives (LM139ADT, LM239DT, or LM239DTBR2G).

Q10: What inventory considerations apply when selecting substitute parts?

A: Current inventory levels vary significantly among substitute options. LM2901DR2G (onsemi) has the highest inventory at 105,400 pieces. LM239DT (STMicroelectronics) has 47,600 pieces. LM2901YPT (STMicroelectronics) has 55,300 pieces. LM139ADT (STMicroelectronics) has 4,825 pieces. LM239DTBR2G (onsemi) has 6,540 pieces. LM2901EDR2G (onsemi) has 2,897 pieces. LM139J/PB (Texas Instruments) has 3,100 pieces. For high-volume production requirements, LM2901DR2G or LM239DT are recommended based on available inventory. For lower-volume applications, all substitutes maintain sufficient stock for standard lead times.

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