LM397_15 Datasheet, PDF (1/19 Pages) Texas Instruments – Single General-Purpose Voltage Comparator

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
LM397
SNOS977E – MAY 2001 – REVISED OCTOBER 2015
LM397 Single General-Purpose Voltage Comparator
1 Features
•1 T_A = 25°C. Typical Values Unless Otherwise
Specified.
• 5-Pin SOT-23 Package
• Industrial Operating Range −40°C to +85°C
• Single or Dual Power Supplies
• Wide Supply Voltage Range 5 V to 30 V
• Low Supply Current 300 µA
• Low Input Bias Current 7 nA
• Low Input Offset Current ±1 nA
• Low Input Offset Voltage ±2 mV
• Response Time 440 ns (50-mV Overdrive)
• Input Common-Mode Voltage 0 to V_S – 1.5 V
2 Applications
• A/D Converters
• Pulse, Square-Wave Generators
• Peak Detector
• Industrial Applications
3 Description
The LM397 device is a single voltage comparator
with an input common mode that includes ground.
The LM397 is designed to operate from a single 5-V
to 30-V 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 the space-saving 5-Pin
SOT-23 package and is pin-compatible to TI’s TL331,
a single differential comparator.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM397
SOT-23 (5)
2.90 mm × 1.60 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Circuit
V_S
R₁
V_IN
-
R_PULL-UP
V_O
+
R₃
R₂
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.