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ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Comparator Multi-purpose CMOS, Open collector, TTL SOT 23 5
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LM397
www.ti.com
SNOS977D –MAY 2001–REVISED MARCH 2013
LM397 Single General Purpose Voltage Comparator
Check for Samples: LM397
1
FEATURES
DESCRIPTION
The LM397 is a single voltage comparator with an
2
• (T
A
= 25°C. Typical Values Unless Otherwise
input common mode that includes ground. The
Specified).
LM397 is designed to operate from a single 5V to
• 5-Pin SOT-23 Package
30V power supply or a split power supply. Its low
• Industrial Operating Range −40°C to +85°C
supply current is virtually independent of the
magnitude of the supply voltage.
• Single or Dual Power Supplies
The LM397 features an open collector output stage.
• Wide Supply Voltage Range 5V to 30V
This allows the connection of an external resistor at
• Low Supply Current 300µA
the output. The output can directly interface with TTL,
• Low Input Bias Current 7nA
CMOS and other logic levels, by tying the resistor to
• Low Input Offset Current ±1nA
different voltage levels (level translator).
• Low Input Offset Voltage ±2mV
The LM397 is available in space saving 5-Pin SOT-
23 package and pin compatible to TI’s TL331, single
• Response Time 440ns (50mV Overdrive)
differential comparator.
• Input Common Mode Voltage 0 to V
S
- 1.5V
APPLICATIONS
• A/D Converters
• Pulse, Square Wave Generators
• Peak Detector
• Industrial Applications
Typical Circuit
Connection Diagram
Top View
Figure 1. 5-Pin SOT-23 Package
See Package Number DBV0005A
Figure 2. Inverting Comparator with Hysteresis
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2001–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.

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