Features Wide supply voltage range   LM139/139A Series 2 to 36 VDC or ±1 to ±18 VDC LM2901: 2 to 36 VDC or ±1 to ±18 VDC LM3302: 2 to 28 VDC or ±1 to ±14 VDC Very low supply current drain (0.8 mA) - independent of supply voltage   Low input biasing current: 25 nA Low input offset current: ±5 nA Offset voltage: ±3 mV Input common-mode voltage range includes GND   Differential input voltage range equal to the power supply voltage   Low output saturation voltage: 250 mV at 4 mA Output voltage compatible with TTL, DTL, ECL, MOS and CMOS logic systems   Description The LM139 series consists of four independent precision voltage comparators with an offset voltage specification as low as 2 mV max for all four comparators. These were designed specifically to operate from a single power supply over a wide range of voltages. Operation from split power supplies is also possible and the low power supply current drain is independent of the magnitude of the power supply voltage. These 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. Application areas include limit comparators, simple analog to digital converters; pulse, squarewave and time delay generators; wide range VCO; MOS clock timers; multivibrators and high voltage digital logic gates. The LM139 series was designed to directly interface with TTL and CMOS. When operated from both plus and minus power supplies, they will directly interface with MOS logic- where the low power drain of the LM339 is a distinct advantage over standard comparators. Applications High precision comparators Reduced VOS drift over temperature Eliminates need for dual supplies Allows sensing near GND Compatible with all forms of logic Power drain suitable for battery operation

Typical Application *click for larger image	Connection Diagram *click for larger image
Typical Performance *click for larger image

Datasheets

Title		Size	Date	Other Language
	LM239 Low Power Low Offset Voltage Quad Comparator	465 Kbytes	1-Apr-04

Application Notes

Title		Size	Date	Other Language
	AN-74: Application Note 74 LM139/LM239/LM339 - A Quad of Independently Functioning Comparators	702 Kbytes	1-Oct-02

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM239J RoHS Status	CERDIP	Full production Lead Time: 6 weeks	Distributor Region Qty AVNET-EM Worldwide 325 DIGI-KEY Worldwide 388 FARNELL Europe and Asia 424	$4.90 each at 1K+ pcs	rail of 25

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM239AJ	LM139J	NATIONAL SEMICONDUCTOR	01 Dec 2009

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM239.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM239 is located at RoHS Status.

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM239.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM239 is located at RoHS Status.

Design Tools

Title	Size	Date
Amplifiers Selection Guide software for Windows

CAD Symbols and Models Download LM239 CAD Symbols

Models N/A

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM239AJ	LM139J	NATIONAL SEMICONDUCTOR	01 Dec 2009