Features Operates from single 5V supply Input current: 150 nA max. over temperature Offset current: 20 nA max. over temperature Differential input voltage range: ±30V Power consumption: 135 mW at ±15V Description The LM111, LM211 and LM311 are voltage comparators that have input currents nearly a thousand times lower than devices like the LM106 or LM710. They are also designed to operate over a wider range of supply voltages: from standard ±15V op amp supplies down to the single 5V supply used for IC logic. Their output is compatible with RTL, DTL and TTL as well as MOS circuits. Further, they can drive lamps or relays, switching voltages up to 50V at currents as high as 50 mA. Both the inputs and the outputs of the LM111, LM211 or the LM311 can be isolated from system ground, and the output can drive loads referred to ground, the positive supply or the negative supply. Offset balancing and strobe capability are provided and outputs can be wire OR'ed. Although slower than the LM106 and LM710 (200 ns response time vs 40 ns) the devices are also much less prone to spurious oscillations. The LM111 has the same pin configuration as the LM106 and LM710. The LM211 is identical to the LM111, except that its performance is specified over a -25°C to +85°C temperature range instead of -55°C to +125°C. The LM311 has a temperature range of 0°C to +70°C.

Also Recommended LMH7220▲ Faster Response Time, LVDS Output LM6511▲ Same Pinout, Much Higher Speed

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

Datasheets

Title		Size	Date	Other Language
	LM311 Voltage Comparator	1089 Kbytes	19-Nov-04

Application Notes

Title		Size	Date	Other Language
	AN-103: Application Note 103 LM340 Series Three Terminal Positive Regulators	421 Kbytes	3-Oct-02
	AN-263: Application Note 263 Sine Wave Generation Techniques	350 Kbytes	26-May-09
	AN-288: Application Note 288 System Oriented DC-DC Conversion Techniques	405 Kbytes	3-Oct-02
	AN-298: Application Note 298 Isolation Techniques for Signal Conditioning	379 Kbytes	2-Oct-02
	AN-307: Application Note 307 Introducing the MF-10: A Versatile Monolithic Active Filter Building Block	384 Kbytes	10-Oct-02	日本語

Other Technical Documents

Title		Type	Date
	+5 to -15 Volts DC Converter	App Note	2002-10-03
	Circuit Techniques for Avoiding Oscillations in Comparator Applications	App Note	2002-10-02

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM311M/NOPB LM311M RoHS Status	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 1646 AVNET-EM Worldwide 241 DIGI-KEY Worldwide 1200 FARNELL Europe and Asia 5133 MOUSER Worldwide 1310 NEWARK Americas 1336 RS COMPONENTS Worldwide 732 TAYLOR Americas 4713	$0.25 each at 1K+ pcs	rail of 95
LM311MX/NOPB LM311MX RoHS Status	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 2154 AVNET-EM Worldwide 4900 DIGI-KEY Worldwide 10754 FARNELL Europe and Asia 879 MOUSER Worldwide 1948 NEWARK Americas 879 TAYLOR Americas 9394	$0.25 each at 1K+ pcs	reel of 2500
LM311N/NOPB LM311N RoHS Status	MDIP	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 520 AVNET-EM Worldwide 3973 BRITESTONE South Korea 28 CEAC Asia Pacific 3000 DIGI-KEY Worldwide 1417 FARNELL Europe and Asia 4499 MOUSER Worldwide 1152 NEWARK Americas 1084 RS COMPONENTS Worldwide 2619 TAYLOR Americas 3080	$0.28 each at 1K+ pcs	rail of 40
LM311H/NOPB LM311H RoHS Status	TO-99	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 346 AVNET-EM Worldwide 339 DIGI-KEY Worldwide 614 MOUSER Worldwide 280 TAYLOR Americas 767	$3.97 each at 1K+ pcs	box of 500

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 LM311.

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 LM311 is located at RoHS Status.

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
LM311M/NOPB LM311M	69.761 70.001	SOIC NARROW	8	1 1	260 235	Detail	Download	N/A	NSZXTT LM 311M
LM311MX/NOPB LM311MX	69.761 70.001	SOIC NARROW	8	1 1	260 235	Detail	Download	N/A	NSZXTT LM 311M
LM311N/NOPB LM311N	508.252 510.002	MDIP	8	1 1	NA NA	Detail	Download	N/A	NSUZXYTTE# LM 311N
LM311H/NOPB LM311H	969.917 971.007	TO-99	8	1 1	NA NA	Detail	Download	N/A	NSZXYTTE# LM311H

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 LM311.

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 LM311 is located at RoHS Status.

Design Tools

Title	Size	Date
Amplifiers Selection Guide software for Windows

CAD Symbols and Models Download LM311 CAD Symbols

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM311M	SLM	0	44046	0	0	3532500	1	1002356520
LM311MX	SLM	0	44046	0	0	3532500	1	1002356520
LM311N	SLM	0	44046	0	0	3532500	1	1002356520

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.

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 LM311.

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 LM311 is located at RoHS Status.