LM393
Dual Differential Comparator

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The LM393 series are dual independent precision voltage comparators capable of single or split supply operation. These devices are designed to permit a common mode range–to–ground level with single supply operation.Input offset voltage specifications as low as 2.0 mV make this device an excellent selection for many applications in consumer automotive, and industrial electronics.

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Datasheet

Size: 71.88KB
Page: 4
PDF: LM393.pdf
  • Description:
    Dual Differential Comparator
  • MFG:
    FCI [First Components International]
 

Abstract


LM393 Dual Differential Comparator
DUAL DIFFERENTIAL COMPARATORS
Dual supplies can also be used as long as the
difference between them is 2 to 36 volts. The
LM393 is designed to operate at a temperature
range of 0
o
C to 70
o
C.
The LM393 dual differential comparator is
made up of two voltage comparators that
operate using the same power supply. THe
supply voltage can range from 2 to 36 volts.
FEATURES
l Single or dual supplies
l 2 to 36 V Supply
l Low Input Bias Current
l Low Input Offset Voltage
l Low Input Offset Current
l Low Supply Current Drain
l Output Compatible with TTL, MOS,
and CMOS
PIN ARRANGEMENT
8 SOP LM393CS8 DIP LM393CD
ABSOLUTE MAXIMUM RATINGS
Power Supply Voltage V
CC
+36 or +18 V
Input Differential Voltage Range V
IDR
36 V
Input Common Mode Voltage Range V
ICR
-0.3 to +36 V
Output Short Circuit-to-Ground I
SC
Continuous mA
Output Sink Current (1) I
Sink
20
Power Dissipation @ 25
o
CP
D
570 mW
Derate above 25
o
C 1/R
θJA
5.7 mW/
o
C
Operating Ambient Temperature Range T
A
0 to 70
o
C
Operating Junction Temperature T
J
125
o
C
Storage Temperature Range T
S
-65 to 150
o
C
Item Symbol Rating Unit
Notes: 1. The max. output current may be as high as 20 mA, independent of the magnitude of V
CC
, output short circuits to
V
CC
can cause excessive heating and eventual destruction.
2. At output switch point, V
O
= 1.4 Vdc, R
S
= 0 ? with V
CC
from 5.0 Vdc to 30 Vdc, and over the full input
common mode range (0V to V
CC
= –1.5V).
3. Due to the PNP transistor inputs, bias current will flow out of the inputs. This current is essentially constant,
independent of the output state, therefore, no loading changes will exist on the input lines.
4. Input common mode of either input should not be permitted to go more than 0.3V negative of ground or minus
supply. The upper limit of common mode range is V
CC
–1.5V.
5. Response time is specified with a 100mV step and 5.0mV of overdrive. With larger magnitudes of overdrive faster
response times are obtainable.
6. The comparator will exhibit proper output state if one of the inputs becomes greater than V
CC
, the other input
must remain within the common mode range. The low input state must not be less than –0.3V of ground or minus
supply.

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