LM397 - Single General Purpose Voltage Comparator
Datasheet Packaging Samples & Pricing Reliability Application Notes Knowledge Base

Features

(TA = 25°C. Typical values unless otherwise specified).

5-Pin SOT23 package

 

Industrial operating range

-40°C to +85°C

Single or dual power supplies

 

Wide supply voltage range

5V to 30V

Low supply current

300µA

Low input bias current

7nA

Low input offset current

±1nA

Low input offset voltage

±2mV

Response time

440ns (50mV overdrive)

Input common mode voltage

0 to VS - 1.5V

General Description


The LM397 is a single voltage comparator with an input common mode that includes ground. More...


Applications


A/D converters
Pulse, square wave generators
Peak detector
Industrial applications
  Typical Application
*click for larger image


ParametersValues
Response Time 0.25 us
Output Bus Open Drain
Supply Min 5 Volt
Supply Max 30 Volt
Channels 1 Channels
Offset Voltage max, 25C 7 mV
Output Current 13 mA
Input Range Vcm to V-
Supply Current Per Channel 0.25 mA
PowerWise Rating 3 63 uA x us
Max Input Bias Current 400 nA
Temperature Min -40 deg C
Temperature Max 85 deg C
Function Comparator


Typical Performance


click for larger image


  Additional Resources
Application Notes


Connection Diagram


click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LM397 Single General Purpose Voltage Comparator 604
Kbytes
10-Aug-06 Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.


Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders
Budgetary PricingStd
Pack
Size
Package
Marking
Format
TypePinsSpec.MSL
Rating
Peak
Reflow
RoHS
Report
CAD
Symbols
WeeksQtyQty$US each
LM397MFSOT-235NOPB
STD
1
1
260
260
RoHS Download Full productionN/A
Samples
Buy Now
1K+$0.26reel
of
1000
C397
XTT
6 weeks7500
LM397MFXSOT-235NOPB
STD
1
1
260
260
RoHS Download Full productionN/A
 
Buy Now
1K+$0.26reel
of
3000
C397
XTT
6 weeks5000

General Description


The LM397 is a single voltage comparator with an input common mode that includes ground. The LM397 is designed to operate from a single 5V to 30V power supply or a split power supply. Its low supply current is virtually independent of the magnitude of the supply voltage.

The LM397 features an open collector output stage. This allows the connection of an external resistor at the output. The output can directly interface with TTL, CMOS and other logic levels, by tying the resistor to different voltage levels (level translator).

The LM397 is available in space saving 5-Pin SOT23 package and pin compatible to TI's TL331, single differential comparator.

Reliability Metrics


Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM397MFLB30003366400383050011086914834
LM397MFXLB30003366400383050011086914834

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.


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If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 8-Nov-2009]