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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 (GBP) 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: £1.05 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 £1.05 £0.759 £0.684 £0.604 Reel £0.504 View £0.566 £0.544 £0.519 £0.491 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: £0.986 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 £0.986 £0.729 £0.656 £0.577 View Reel £0.443 £0.54 £0.517 £0.50 £0.443 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: £0.271 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 £0.271 £0.185 £0.165 £0.142 View Reel £0.098 £0.132 £0.126 £0.12 £0.098 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: £0.21 17,971In Stock 47,500Expected 18/01/2027	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 18/01/2027	Cut Tape £0.21 £0.148 £0.131 £0.112 View Reel £0.083 £0.103 £0.098 £0.092 £0.083 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: £0.278 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 £0.278 £0.19 £0.169 £0.147 View Reel £0.122 £0.135 £0.128 £0.123 £0.122 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: £0.368 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 14/12/2026 45,000 Expected 08/11/2027 Factory Lead Time: 30 Weeks	Cut Tape £0.368 £0.256 £0.228 £0.196 View Reel £0.158 £0.182 £0.174 £0.167 £0.158 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: £0.308 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 19/11/2026 7,500 Expected 11/01/2027 Factory Lead Time: 30 Weeks	Cut Tape £0.308 £0.217 £0.195 £0.168 Reel £0.131 View £0.157 £0.151 £0.144 £0.128 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: £0.361 4,180In Stock 5,000Expected 19/11/2026	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 19/11/2026	Cut Tape £0.361 £0.255 £0.228 £0.197 Reel £0.16 View £0.183 £0.178 £0.169 £0.149 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: £0.458 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	£0.458 £0.326 £0.325 £0.282 £0.184	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: £0.458 5,840In Stock 5,000Expected 19/07/2027	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 19/07/2027	Cut Tape £0.458 £0.325 £0.292 £0.254 View Reel £0.207 £0.236 £0.225 £0.217 £0.207 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: £0.48 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 19/11/2026 42,000 Expected 12/05/2027 39,000 Expected 15/11/2027 Factory Lead Time: 30 Weeks	Cut Tape £0.48 £0.333 £0.301 £0.261 View Reel £0.207 £0.243 £0.231 £0.223 £0.207 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: £0.278 9,490In Stock 7,500Expected 22/03/2027	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 22/03/2027	Cut Tape £0.278 £0.191 £0.17 £0.148 Reel £0.119 View £0.136 £0.13 £0.124 £0.115 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: £0.346 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 28/12/2026 5,000 Expected 26/04/2027 Factory Lead Time: 30 Weeks	Cut Tape £0.346 £0.239 £0.213 £0.184 View Reel £0.146 £0.17 £0.162 £0.155 £0.146 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: £0.361 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 14/12/2026 9,000 Expected 21/12/2026 8,000 Expected 28/12/2026 Factory Lead Time: 30 Weeks	£0.361 £0.261 £0.243 £0.218 View £0.205 £0.198 £0.184	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: £0.428 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 21/12/2026 4,000 Expected 25/01/2027 Factory Lead Time: 30 Weeks	£0.428 £0.295 £0.264 £0.229 View £0.212 £0.203 £0.186 £0.178 £0.175	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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