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LM139, LM239 & LM339 Quad Voltage Comparators

STMicroelectronics LM139, LM239, and LM339 Low-Power Quad Voltage Comparators consist of four independent precision-voltage comparators with an offset voltage specification as low as 2 mV. These Low-Power Quad Voltage Comparators have been designed specifically to operate from a single power supply over a wide range of voltages. Operation from split power supplies is also possible. STMicroelectronics' Low-Power Quad Voltage Comparators also have a unique characteristic in that the input common mode voltage range includes ground even though operated from a single power supply voltage.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.	Mounting Style	Package / Case	Number of Channels	Output Type	Response Time	Comparator Type	Supply Voltage - Min	Supply Voltage - Max	Operating Supply Current	Output Current per Channel	Vos - Input Offset Voltage	Ib - Input Bias Current	Minimum Operating Temperature	Maximum Operating Temperature	Series	Packaging
Analog Comparators Lo Pwr QUAD Vltg COMPARATOR LM339APT STMicroelectronics 1: $0.36 42,850In Stock	Mfr. Part # LM339APT Mouser Part # 511-LM339APT	STMicroelectronics	Analog Comparators Lo Pwr QUAD Vltg COMPARATOR Learn More about STMicroelectronics stm standard products	Datasheet	42,850In Stock	Cut Tape $0.36 $0.247 $0.22 $0.19 Reel $0.134 View $0.176 $0.167 $0.16 $0.133 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	TSSOP-14	4 Channel	CMOS, DTL, ECL, MOS, TTL	1.3 us	Differential	2 V	32 V	2 mA	4 mA	2 mV	100 nA	0 C	+ 70 C	LM339	Reel, Cut Tape, MouseReel
Analog Comparators Low power quad voltage comparators LM139ADT STMicroelectronics 1: $1.39 3,903In Stock	Mfr. Part # LM139ADT Mouser Part # 511-LM139ADT	STMicroelectronics	Analog Comparators Low power quad voltage comparators Learn More about STMicroelectronics stmlmx39	Datasheet	3,903In Stock	Cut Tape $1.39 $1.01 $0.91 $0.805 Reel $0.671 View $0.754 $0.724 $0.691 $0.655 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	SOP-14	4 Channel	CMOS, DTL, ECL, MOS, TTL	1.3 us	Differential	2 V	32 V	2 mA	4 mA	2 mV	100 nA	- 55 C	+ 125 C	LM139	Reel, Cut Tape, MouseReel
Analog Comparators LP Quad 2mV 1.1mA 25nA 4 Precision LM239QT STMicroelectronics 1: $0.58 3,301In Stock 69,000On Order	Mfr. Part # LM239QT Mouser Part # 511-LM239QT	STMicroelectronics	Analog Comparators LP Quad 2mV 1.1mA 25nA 4 Precision Learn More about STMicroelectronics stm standard products	Datasheet	3,301In Stock 69,000On Order On Order Ship Dates Mfr. #: LM239QT Stock: 3,301 Can Ship Immediately On Order: 27,000 Expected 11/16/2026 42,000 Expected 5/12/2027 Factory Lead-Time: 30 Weeks	Cut Tape $0.58 $0.416 $0.374 $0.329 Reel $0.278 View $0.306 $0.292 $0.28 $0.27 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	QFN-16	4 Channel	CMOS, DTL, ECL, MOS, TTL	1.3 us	Differential	2 V	32 V	2 mA	4 mA	5 mV	250 nA	- 40 C	+ 105 C	LM239	Reel, Cut Tape, MouseReel
Analog Comparators Lo-Pwr Quad Voltage LM339DT STMicroelectronics 1: $0.29 21,006In Stock 47,500Expected 1/18/2027	Mfr. Part # LM339DT Mouser Part # 511-LM339DT	STMicroelectronics	Analog Comparators Lo-Pwr Quad Voltage Learn More about STMicroelectronics stmlmx39	Datasheet	21,006In Stock 47,500Expected 1/18/2027	Cut Tape $0.29 $0.203 $0.179 $0.152 Reel $0.118 View $0.14 $0.132 $0.126 $0.114 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	SOIC-14	4 Channel	CMOS, DTL, ECL, MOS, TTL	1.3 us	Differential	2 V	32 V	2 mA	4 mA	5 mV	250 nA	0 C	+ 70 C	LM339	Reel, Cut Tape, MouseReel
Analog Comparators Lo-Pwr Quad Voltage LM339PT STMicroelectronics 1: $0.37 31,963In Stock	Mfr. Part # LM339PT Mouser Part # 511-LM339P	STMicroelectronics	Analog Comparators Lo-Pwr Quad Voltage Learn More about STMicroelectronics stm standard products	Datasheet	31,963In Stock	Cut Tape $0.37 $0.253 $0.225 $0.195 View Reel $0.155 $0.18 $0.171 $0.164 $0.155 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	TSSOP-14	4 Channel	CMOS, DTL, ECL, MOS, TTL	1.3 us	Differential	2 V	32 V	2 mA	4 mA	5 mV	250 nA	0 C	+ 70 C	LM339	Reel, Cut Tape, MouseReel
Analog Comparators Low PWR Quad Volt 1.1 mA 25nA 250mV LM139DT STMicroelectronics 1: $1.67 1,837In Stock 5,000Expected 11/4/2026	Mfr. Part # LM139DT Mouser Part # 511-LM139DT	STMicroelectronics	Analog Comparators Low PWR Quad Volt 1.1 mA 25nA 250mV Learn More about STMicroelectronics stmlmx39	Datasheet	1,837In Stock 5,000Expected 11/4/2026	Cut Tape $1.67 $1.23 $1.12 $0.99 View Reel $0.553 $0.931 $0.895 $0.89 $0.553 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	SOP-14	4 Channel	CMOS, DTL, ECL, MOS, TTL	1.3 us	Differential	2 V	32 V	2 mA	4 mA	5 mV	250 nA	- 55 C	+ 125 C	LM139	Reel, Cut Tape, MouseReel
Analog Comparators Lo-Pwr Quad Voltage LM239ADT STMicroelectronics 1: $0.44 4,165In Stock 12,500On Order	Mfr. Part # LM239ADT Mouser Part # 511-LM239ADT	STMicroelectronics	Analog Comparators Lo-Pwr Quad Voltage Learn More about STMicroelectronics stm standard products	Datasheet	4,165In Stock 12,500On Order On Order Ship Dates Mfr. #: LM239ADT Stock: 4,165 Can Ship Immediately On Order: 5,000 Expected 11/5/2026 7,500 Expected 1/27/2027 Factory Lead-Time: 30 Weeks	Cut Tape $0.44 $0.305 $0.272 $0.238 View Reel $0.176 $0.22 $0.21 $0.199 $0.176 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	SOIC-14	4 Channel	CMOS, DTL, ECL, MOS, TTL	1.3 us	Differential	2 V	32 V	2 mA	4 mA	2 mV	100 nA	- 40 C	+ 105 C	LM239	Reel, Cut Tape, MouseReel
Analog Comparators Lo-Pwr Quad Voltage LM239APT STMicroelectronics 1: $0.48 4,190In Stock 5,000Expected 11/25/2026	Mfr. Part # LM239APT Mouser Part # 511-LM239AP	STMicroelectronics	Analog Comparators Lo-Pwr Quad Voltage Learn More about STMicroelectronics stm standard products	Datasheet	4,190In Stock 5,000Expected 11/25/2026	Cut Tape $0.48 $0.34 $0.304 $0.263 Reel $0.213 View $0.244 $0.237 $0.226 $0.199 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	TSSOP-14	4 Channel	CMOS, DTL, ECL, MOS, TTL	1.3 us	Differential	2 V	32 V	2 mA	4 mA	2 mV	100 nA	- 40 C	+ 105 C	LM239	Reel, Cut Tape, MouseReel
Analog Comparators Lo-Pwr Quad Voltage LM239D STMicroelectronics 1: $0.61 3,646In Stock 2,000Expected 11/9/2026	Mfr. Part # LM239D Mouser Part # 511-LM239D	STMicroelectronics	Analog Comparators Lo-Pwr Quad Voltage Learn More about STMicroelectronics stm standard products	Datasheet	3,646In Stock 2,000Expected 11/9/2026	$0.61 $0.434 $0.433 $0.376 View $0.349 $0.333 $0.319 $0.302 $0.272	Min.: 1 Mult.: 1	SMD/SMT	SOIC-14	4 Channel	CMOS, DTL, ECL, MOS, TTL	1.3 us	Differential	2 V	32 V	2 mA	4 mA	5 mV	250 nA	- 25 C	+ 85 C	LM239	Tube
Analog Comparators Lo-Pwr Quad Voltage LM239DT STMicroelectronics 1: $0.61 4,513In Stock	Mfr. Part # LM239DT Mouser Part # 511-LM239DT	STMicroelectronics	Analog Comparators Lo-Pwr Quad Voltage Learn More about STMicroelectronics stmlmx39	Datasheet	4,513In Stock	Cut Tape $0.61 $0.433 $0.388 $0.338 View Reel $0.275 $0.314 $0.30 $0.288 $0.275 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	SOIC-14	4 Channel	CMOS, DTL, ECL, MOS, TTL	1.3 us	Differential	2 V	32 V	2 mA	4 mA	5 mV	250 nA	- 40 C	+ 105 C	LM239	Reel, Cut Tape, MouseReel
Analog Comparators Lo-Pwr Quad Voltage LM239PT STMicroelectronics 1: $0.46 2,950In Stock 5,000Expected 12/14/2026	Mfr. Part # LM239PT Mouser Part # 511-LM239P	STMicroelectronics	Analog Comparators Lo-Pwr Quad Voltage Learn More about STMicroelectronics stm standard products	Datasheet	2,950In Stock 5,000Expected 12/14/2026	Cut Tape $0.46 $0.319 $0.284 $0.245 Reel $0.194 View $0.227 $0.215 $0.206 $0.188 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	TSSOP-14	4 Channel	CMOS, DTL, ECL, MOS, TTL	1.3 us	Differential	2 V	32 V	2 mA	4 mA	5 mV	250 nA	- 40 C	+ 105 C	LM239	Reel, Cut Tape, MouseReel
Analog Comparators Lo-Pwr Quad Voltage LM339D STMicroelectronics 1: $0.48 4,315In Stock 4,005On Order	Mfr. Part # LM339D Mouser Part # 511-LM339D	STMicroelectronics	Analog Comparators Lo-Pwr Quad Voltage Learn More about STMicroelectronics stm standard products	Datasheet	4,315In Stock 4,005On Order On Order Ship Dates Mfr. #: LM339D Stock: 4,315 Can Ship Immediately On Order: 5 Expected 10/8/2026 4,000 Expected 11/9/2026 Factory Lead-Time: 30 Weeks	$0.48 $0.348 $0.325 $0.291 View $0.273 $0.264 $0.241	Min.: 1 Mult.: 1	SMD/SMT	SOIC-14	4 Channel	CMOS, DTL, ECL, MOS, TTL	1.3 us	Differential	2 V	32 V	2 mA	4 mA	5 mV	250 nA	0 C	+ 70 C	LM339	Tube
Analog Comparators Low Power QUAD 1.1 mA 25nA 250mV LM339QT STMicroelectronics 1: $0.48 132,000On Order	Mfr. Part # LM339QT Mouser Part # 511-LM339QT	STMicroelectronics	Analog Comparators Low Power QUAD 1.1 mA 25nA 250mV Learn More about STMicroelectronics stm standard products	Datasheet	132,000On Order On Order Ship Dates Mfr. #: LM339QT Stock: 0 On Order: 102,000 Expected 11/9/2026 30,000 Expected 11/12/2026 Factory Lead-Time: 30 Weeks	Cut Tape $0.48 $0.334 $0.298 $0.268 View Reel $0.219 $0.253 $0.244 $0.237 $0.219 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	QFN-16	4 Channel	CMOS, DTL, ECL, MOS, TTL	1.3 us	Differential	2 V	32 V	2 mA	4 mA	5 mV	250 nA	0 C	+ 70 C	LM339	Reel, Cut Tape, MouseReel
Analog Comparators Lo-Pwr Quad Voltage LM339ADT STMicroelectronics 1: $0.36 17,500On Order	Mfr. Part # LM339ADT Mouser Part # 511-LM339ADT	STMicroelectronics	Analog Comparators Lo-Pwr Quad Voltage Learn More about STMicroelectronics stm standard products	Datasheet	17,500On Order On Order Ship Dates Mfr. #: LM339ADT Stock: 0 On Order: 10,000 Expected 12/7/2026 7,500 Expected 3/22/2027 Factory Lead-Time: 30 Weeks	Cut Tape $0.36 $0.25 $0.223 $0.192 View Reel $0.154 $0.177 $0.169 $0.161 $0.154 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	SOIC-14	4 Channel	CMOS, DTL, ECL, MOS, TTL	1.3 us	Differential	2 V	32 V	2 mA	4 mA	2 mV	100 nA	0 C	+ 70 C	LM339	Reel, Cut Tape, MouseReel
Analog Comparators Lo-Pwr Quad Voltage LM339AD STMicroelectronics 1: $0.57 4,972On Order	Mfr. Part # LM339AD Mouser Part # 511-LM339AD	STMicroelectronics	Analog Comparators Lo-Pwr Quad Voltage Learn More about STMicroelectronics stm standard products	Datasheet	4,972On Order On Order Ship Dates Mfr. #: LM339AD Stock: 0 On Order: 972 Expected 11/9/2026 4,000 Expected 2/10/2027 Factory Lead-Time: 30 Weeks	$0.57 $0.393 $0.351 $0.305 View $0.283 $0.27 $0.248 $0.237 $0.233	Min.: 1 Mult.: 1	SMD/SMT	SOIC-14	4 Channel	CMOS, DTL, ECL, MOS, TTL	1.3 us	Differential	2 V	32 V	2 mA	4 mA	2 mV	100 nA	0 C	+ 70 C	LM339	Tube

LM139, LM239 & LM339 Quad Voltage Comparators

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