LM393N ON Semiconductor, LM393N Datasheet - Page 5
![Comparator ICs 2-36V Dual](/photos/27/13/271328/pdip8_sml.jpg)
LM393N
Manufacturer Part Number
LM393N
Description
Comparator ICs 2-36V Dual
Manufacturer
ON Semiconductor
Datasheet
1.NCV2903DR2G.pdf
(10 pages)
Specifications of LM393N
Number Of Channels
2 Channels
Output Type
Open Collector
Response Time
1.5 us
Offset Voltage (max)
5 mV
Input Bias Current (max)
250 nA
Supply Voltage (max)
36 V
Supply Voltage (min)
2 V
Supply Current (max)
1 mA
Maximum Power Dissipation
570 mW
Maximum Operating Temperature
+ 70 C
Mounting Style
Through Hole
Package / Case
PDIP-8
Minimum Operating Temperature
0 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM393N
Manufacturer:
HTC
Quantity:
20 000
Part Number:
LM393N L7805CV
Manufacturer:
ST
Quantity:
20 000
Part Number:
LM393NG
Manufacturer:
ON/安森美
Quantity:
20 000
bandwidth characteristics. This gives the device oscillation
tendencies if the outputs are capacitively coupled to the
inputs via stray capacitance. This oscillation manifests
itself during output transitions (V
this situation, input resistors < 10 kW should be used.
Figure 10. Free−Running Square−Wave Oscillator
These dual comparators feature high gain, wide
V
D1 prevents input from going negative by more than 0.6 V.
in
V
CC
51 k
51 k
Figure 8. Zero Crossing Detector
8.2 k
R1
R1
D1
R3 ≤
0.001 mF
R5
10
6.8 k
220 k
R2
(Single Supply)
R4
for small error in zero crossing.
R1 + R2 = R3
1.0 mW
LM393
+
-
51 k
220 k
15 k
R5
V
R3
ref
*
)
LM393
V
R1
+15 V
V
CC
OL
10 m
O
0
R
S
to V
Figure 12. Comparator with Hysteresis
OH
V
R
10 k
t
10 k
CC
APPLICATIONS INFORMATION
L
). To alleviate
+
V
-
LM393
O
R2
http://onsemi.com
5
V
CC
recommended. It is good design practice to ground all
unused pins.
voltage without damaging the comparator’s inputs. Voltages
more negative than −0.3 V should not be used.
V
R
in
``ON'' for t t
where:
L
The addition of positive feedback (< 10 mV) is also
Differential input voltages may be larger than supply
Dt = RC n (
t
R
V
V
V
LM393
+
-
Figure 11. Time Delay Generator
th1
th2
S
in(min)
= R1 | | R2
Figure 9. Zero Crossing Detector
= V
= V
O
+ Dt
ref
ref
[ 0.4 V peak for 1% phase distortion (DQ).
V
*
)
+V
LM393
-V
C
V
+
-
V
V
CC
ref
CC
EE
CC
R
)
C
(V
(V
(Split Supply)
R1 + R2 + R
CC
ref
-V
-V
R1 + R2
+ V
10 k
O
ref
-
LM393
+
ref
Low) R1
) R1
L
V
O
V
- V
V
t
in
0
0
C
0
O
V
V
V
EE
in
CC
O
V
V
ref
ref
V
CC
R
V
L
O
V
DQ
in(min)
t
Q
Q