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LM397 Datasheet(PDF) 3 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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 3 page
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Electrical Characteristics Unless otherwise specified, all limits guaranteed for at T
J = 25˚C, VS = 5V.
Boldface limits apply at temperature extremes. (Continued)
Symbol
Parameter
Conditions
Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
A
V
Voltage Gain
V
S = 15V, VO = 1.4V to 11.4V,
R
L > = 15kΩ connected to VS
120
V/mV
t
PHL
Propagation Delay (High to Low)
Input Overdrive = 5mV
R
L = 5.1kΩ connected to 5V,
C
L = 15pF
900
ns
Input Overdrive = 50mV
R
L = 5.1kΩ connected to 5V,
C
L = 15pF
250
t
PLH
Propagation Delay (Low to High)
Input Overdrive = 5mV
R
L = 5.1kΩ connected to 5V,
C
L = 15pF
940
µs
Input Overdrive = 50mV
R
L = 5.1kΩ connected to 5V,
C
L = 15pF
440
ns
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.
Note 2: Human body model, 1.5k
Ω in series with 100pF.
Note 3: Machine model, 0
Ω in series with 200pF.
Note 4: The maximum power dissipation is a function of TJ(MAX), θJA , and TA. The maximum allowable power dissipation at any ambient temperature is
PD =(TJ(MAX) -TA)/ θJA . All numbers apply for packages soldered directly onto a PC board.
Note 5: Typical values represent the most likely parametric norm.
Note 6: All limits are guaranteed by testing or statistical analysis.
Note 7: The input common-mode voltage of either input should not be permitted to go below the negative rail by more than 0.3V. The upper end of the
common-mode voltage range is VS - 1.5V at 25˚C.
www.national.com
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