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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	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 Low power quad voltage comparators LM139ADT STMicroelectronics 1: $1.40 3,816In Stock	Mfr. Part No. LM139ADT Mouser Part No 511-LM139ADT	STMicroelectronics	Analog Comparators Low power quad voltage comparators Learn More about STMicroelectronics stmlmx39	Datasheet	3,816In Stock	Cut Tape $1.40 $1.01 $0.911 $0.805 Reel $0.671 View $0.754 $0.725 $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 Low PWR Quad Volt 1.1 mA 25nA 250mV LM139DT STMicroelectronics 1: $1.31 6,819In Stock	Mfr. Part No. LM139DT Mouser Part No 511-LM139DT	STMicroelectronics	Analog Comparators Low PWR Quad Volt 1.1 mA 25nA 250mV Learn More about STMicroelectronics stmlmx39	Datasheet	6,819In Stock	Cut Tape $1.31 $0.971 $0.875 $0.769 View Reel $0.591 $0.719 $0.688 $0.666 $0.591 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 Vltg COMPARATOR LM339APT STMicroelectronics 1: $0.361 36,324In Stock	Mfr. Part No. LM339APT Mouser Part No 511-LM339APT	STMicroelectronics	Analog Comparators Lo Pwr QUAD Vltg COMPARATOR Learn More about STMicroelectronics stm standard products	Datasheet	36,324In Stock	Cut Tape $0.361 $0.247 $0.22 $0.19 View Reel $0.13 $0.176 $0.167 $0.16 $0.13 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 Lo-Pwr Quad Voltage LM339DT STMicroelectronics 1: $0.28 17,971In Stock 47,500Expected 2027/01/18	Mfr. Part No. LM339DT Mouser Part No 511-LM339DT	STMicroelectronics	Analog Comparators Lo-Pwr Quad Voltage Learn More about STMicroelectronics stmlmx39	Datasheet	17,971In Stock 47,500Expected 2027/01/18	Cut Tape $0.28 $0.197 $0.174 $0.149 View Reel $0.11 $0.137 $0.13 $0.122 $0.11 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 28,311In Stock	Mfr. Part No. LM339PT Mouser Part No 511-LM339P	STMicroelectronics	Analog Comparators Lo-Pwr Quad Voltage Learn More about STMicroelectronics stm standard products	Datasheet	28,311In Stock	Cut Tape $0.37 $0.254 $0.226 $0.195 View Reel $0.163 $0.18 $0.171 $0.164 $0.163 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 Power QUAD 1.1 mA 25nA 250mV LM339QT STMicroelectronics 1: $0.49 23,492In Stock 81,000On Order	Mfr. Part No. LM339QT Mouser Part No 511-LM339QT	STMicroelectronics	Analog Comparators Low Power QUAD 1.1 mA 25nA 250mV Learn More about STMicroelectronics stm standard products	Datasheet	23,492In Stock 81,000On Order On Order Ship Dates Mfr. No: LM339QT Stock: 23,492 Can Dispatch Immediately On Order: 36,000 Expected 2026/12/14 45,000 Expected 2027/11/08 Factory Lead Time: 30 Weeks	Cut Tape $0.49 $0.341 $0.304 $0.262 View Reel $0.211 $0.243 $0.231 $0.222 $0.211 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 LM239ADT STMicroelectronics 1: $0.411 5,298In Stock 12,500On Order	Mfr. Part No. LM239ADT Mouser Part No 511-LM239ADT	STMicroelectronics	Analog Comparators Lo-Pwr Quad Voltage Learn More about STMicroelectronics stm standard products	Datasheet	5,298In Stock 12,500On Order On Order Ship Dates Mfr. No: LM239ADT Stock: 5,298 Can Dispatch Immediately On Order: 5,000 Expected 2026/11/19 7,500 Expected 2027/01/11 Factory Lead Time: 30 Weeks	Cut Tape $0.411 $0.29 $0.259 $0.223 Reel $0.174 View $0.209 $0.201 $0.192 $0.171 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 4,180In Stock 5,000Expected 2026/11/19	Mfr. Part No. LM239APT Mouser Part No 511-LM239AP	STMicroelectronics	Analog Comparators Lo-Pwr Quad Voltage Learn More about STMicroelectronics stm standard products	Datasheet	4,180In Stock 5,000Expected 2026/11/19	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: $0.611 4,126In Stock	Mfr. Part No. LM239D Mouser Part No 511-LM239D	STMicroelectronics	Analog Comparators Lo-Pwr Quad Voltage Learn More about STMicroelectronics stm standard products	Datasheet	4,126In Stock	$0.611 $0.434 $0.433 $0.376 $0.245	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: $0.611 5,840In Stock 5,000Expected 2027/06/07	Mfr. Part No. LM239DT Mouser Part No 511-LM239DT	STMicroelectronics	Analog Comparators Lo-Pwr Quad Voltage Learn More about STMicroelectronics stmlmx39	Datasheet	5,840In Stock 5,000Expected 2027/06/07	Cut Tape $0.611 $0.433 $0.388 $0.338 View Reel $0.276 $0.314 $0.30 $0.288 $0.276 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 LP Quad 2mV 1.1mA 25nA 4 Precision LM239QT STMicroelectronics 1: $0.64 8,678In Stock 108,000On Order	Mfr. Part No. LM239QT Mouser Part No 511-LM239QT	STMicroelectronics	Analog Comparators LP Quad 2mV 1.1mA 25nA 4 Precision Learn More about STMicroelectronics stm standard products	Datasheet	8,678In Stock 108,000On Order On Order Ship Dates Mfr. No: LM239QT Stock: 8,678 Can Dispatch Immediately On Order: 27,000 Expected 2026/11/19 39,000 Expected 2027/03/15 42,000 Expected 2027/05/12 Factory Lead Time: 30 Weeks	Cut Tape $0.64 $0.444 $0.401 $0.348 View Reel $0.276 $0.323 $0.308 $0.297 $0.276 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 LM339ADT STMicroelectronics 1: $0.37 9,490In Stock 7,500Expected 2027/03/22	Mfr. Part No. LM339ADT Mouser Part No 511-LM339ADT	STMicroelectronics	Analog Comparators Lo-Pwr Quad Voltage Learn More about STMicroelectronics stm standard products	Datasheet	9,490In Stock 7,500Expected 2027/03/22	Cut Tape $0.37 $0.255 $0.227 $0.197 Reel $0.158 View $0.181 $0.173 $0.165 $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 LM239PT STMicroelectronics 1: $0.461 9,550On Order	Mfr. Part No. LM239PT Mouser Part No 511-LM239P	STMicroelectronics	Analog Comparators Lo-Pwr Quad Voltage Learn More about STMicroelectronics stm standard products	Datasheet	9,550On Order On Order Ship Dates Mfr. No: LM239PT Stock: 0 On Order: 4,550 Expected 2026/12/14 5,000 Expected 2027/04/21 Factory Lead Time: 30 Weeks	Cut Tape $0.461 $0.319 $0.284 $0.245 View Reel $0.194 $0.227 $0.215 $0.206 $0.194 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 19,004On Order	Mfr. Part No. LM339D Mouser Part No 511-LM339D	STMicroelectronics	Analog Comparators Lo-Pwr Quad Voltage Learn More about STMicroelectronics stm standard products	Datasheet	19,004On Order On Order Ship Dates Mfr. No: LM339D Stock: 0 On Order: 2,004 Expected 2026/12/14 9,000 Expected 2026/12/21 8,000 Expected 2026/12/28 Factory Lead Time: 30 Weeks	$0.48 $0.348 $0.323 $0.291 View $0.273 $0.264 $0.245	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 Lo-Pwr Quad Voltage LM339AD STMicroelectronics 1: $0.57 4,972On Order	Mfr. Part No. LM339AD Mouser Part No 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. No: LM339AD Stock: 0 On Order: 972 Expected 2026/12/21 4,000 Expected 2027/01/25 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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LM139, LM239 & LM339 Quad Voltage Comparators

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