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LM397 Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM397
Description  Single General Purpose Voltage Comparator
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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LM397
Single General Purpose Voltage Comparator
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 SOT23-5 package
and pin compatible to TI’s TL331, single differential com-
parator.
Features
(T
A = 25˚C. Typical values unless otherwise specified).
n
SOT23-5 package
n
Industrial operating range
−40˚C to +85˚C
n
Single or dual power supplies
n
Wide supply voltage range
5V to 30V
n
Low supply current
300µA
n
Low input bias current
7nA
n
Low input offset current
±1nA
n
Low input offset voltage
±2mV
n
Response time
440ns (50mV overdrive)
n
Input common mode voltage
0 to V
S - 1.5V
Applications
n
A/D converters
n
Pulse, square wave generators
n
Peak detector
n
Industrial applications
Connection Diagram
SOT23-5
20022108
Top View
Typical Circuit
Ordering Information
Package
Part Number
Package Marking
Transport Media
NSC Drawing
5-Pin SOT-23
LM397MF
C397
1k Units Tape and Reel
MF05A
LM397MFX
3k Units Tape and Reel
20022109
FIGURE 1. Inverting Comparator with Hysteresis
June 2001
© 2001 National Semiconductor Corporation
DS200221
www.national.com




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