NATIONAL SEMICONDUCTOR

LM397 Series Single SOT-23 5 Pin General Purpose Voltage Comparator

Mfr Part#: LM397MF/NOPB
Mounting Method: SurfaceMount
Package Style: SOT-23-5
Packaging: REEL

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Data sheet

Application Note:184

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$0.3100 USD (each)
1000+	$0.3100

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Qty in Stock:	106,000
Reserve Stock:	78,000
In Transit:	0
LT:	10 Weeks
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Overview

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Type: Voltage
Number of Channels: 1
Supply Voltage: 5 to 30 V
Average Bias Current-Max: 250 nA
Thermal Resistance: 168 °C/W

A Comparator circuit compares two voltage signals and and determines which one is greater. The result of this comparison is indicated by the output voltage. Op-amps and comparators are similar but the not same. You can use an op amp for a comparator but not exactly vice-versa; comparators do not have the internal integrator that is key to an op amp.

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.

The National LM397MF is a general voltage comparator. It has a -40 to+85 temperature range and is offered in a 5 pin SOT23 package.

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