© Semiconductor Components Industries, LLC, 2014
October, 2014 − Rev. 0 1Publication Order Number:
LM393S/D
LM393S, LM2903S
Low Offset Voltage
Dual Comparators
The LM393S and LM2903S 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 l o w
as 2.0 mV make this device an excellent selection for many
applications in consumer, automotive, and industrial electronics.
Features
•Wide Single−Supply Range: 2.0 Vdc to 36 Vdc
•Split−Supply Range: ±1.0 Vdc to ±18 Vdc
•Very Low Current Drain Independent of Supply Voltage: 0.4 mA
•Low Input Bias Current: 25 nA
•Low Input Offset Current: 5.0 nA
•Low Input Offset Voltage: 5.0 mV (max) with LM393S
•Input Common Mode Range to Ground Level
•Differential Input Voltage Range Equal to Power Supply Voltage
•Output Voltage Compatible with DTL, ECL, TTL, MOS, and CMOS
Logic Levels
•These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
VCC + Input - Input Output
Q3 R4 Q4
Q5
R2
Q6 Q14
Q16
Q15
Q12
Q11
Q10
Q9
Q8
Q2
Q1
F1
2.0 k
2.1 k
R1
4.6 k
Figure 1. Representative Schematic Diagram
(Diagram shown is for 1 comparator)
See detailed marking information and ordering and shipping
information on page 7 of this data sheet.
ORDERING INFORMATION
PIN CONNECTIONS
(Top View)
GND
Inputs A
Inputs B
Output B
Output A VCC
−
−
+
+
1
2
3
4
8
7
6
5
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MARKING
DIAGRAMS
PDIP−8
N SUFFIX
CASE 626 LM2903SN
AWL
YYWWG
LMxxxx = Specific Device Code
A, AL = Assembly Location
WL = Wafer Lot
Y, YY = Year
W, WW = Work Week
G or G= Pb−Free Package
LM393SN
AWL
YYWWG
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MAXIMUM RATINGS
Rating Symbol Value Unit
Power Supply Voltage VCC +36 or ±18 V
Input Differential Voltage VIDR 36 V
Input Common Mode Voltage Range (Note 1) VICR −0.3 to +36 V
Output Voltage VO36 V
Output Short Circuit−to−Ground
Output Sink Current (Note 2) ISC
ISink Continuous
20 mA
Power Dissipation @ TA = 25°C
Derate above 25°CPD
1/RJA 570
5.7 MW
mW/°C
Operating Ambient Temperature Range LM393S
LM2903S
TA0 to +70
−40 to +105
°C
Maximum Operating Junction Temperature TJ(max) 150 °C
Storage Temperature Range Tstg −65 to +150 °C
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be af fected.
1. For supply voltages less than 36 V, the absolute maximum input voltage is equal to the supply voltage.
2. The maximum output current may be as high as 20 mA, independent of the magnitude of VCC, output short circuits to VCC can cause
excessive heating and eventual destruction.
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ELECTRICAL CHARACTERISTICS (VCC = 5.0 Vdc, Tlow ≤TA ≤ Thigh, unless otherwise noted.)
Characteristic Symbo
l
LM393S LM2903S
Unit
Min Typ Max Min Typ Max
Input Offset Voltage (Note 3) VIO mV
TA = 25°C − ±1.0 ±5.0 − ±2.0 ±7.0
Tlow ≤TA ≤ Thigh − − ±9.0 − ±9.0 ±15
Input Offset Current IIO nA
TA = 25°C − ±5.0 ±50 − ±5.0 ±50
Tlow ≤TA ≤ Thigh − − ±150 − ±50 ±200
Input Bias Current (Note 4) IIB nA
TA = 25°C − 25 250 − 25 250
Tlow ≤TA ≤ Thigh − − 400 − 200 500
Input Common Mode Voltage Range (Note 5) VICR V
TA = 25°C 0 − VCC −1.5 0 − VCC −1.5
Tlow ≤TA ≤ Thigh 0 − VCC −2.0 0 − VCC −2.0
Voltage Gain AVOL 50 200 − 25 200 − V/mV
RL ≥ 15 k, VCC = 15 Vdc, TA = 25°C
Large Signal Response Time − − 200 − − 200 − ns
Vin = TTL Logic Swing, Vref = 1.4 Vdc
VRL = 5.0 Vdc, RL = 5.1 k, TA = 25°C
Response Time (Note 6) tTLH − 1.0 − − 1.0 − s
VRL = 5.0 Vdc, RL = 5.1 k, TA = 25°C
Input Differential Voltage (Note 7) VID − − VCC − − VCC V
All Vin ≥ GND or V− Supply (if used)
Output Sink Current ISink 6.0 16 − 6.0 16 − mA
Vin ≥ 1.0 Vdc, Vin+ = 0 Vdc, VO ≤ 1.5 Vdc TA = 25°C
Output Saturation Voltage VOL mV
Vin ≥ 1.0 Vdc, Vin+ = 0, ISink ≤ 4.0 mA, TA = 25°C − 150 400 − − 400
Tlow ≤TA ≤ Thigh − − 700 − 200 700
Output Leakage Current IOL nA
Vin− = 0 V, Vin+ ≥ 1.0 Vdc, VO = 5.0 Vdc, TA = 25°C − 0.1 − − 0.1 −
Vin− = 0 V, Vin+ ≥ 1.0 Vdc, VO = 30 Vdc,
Tlow ≤TA ≤ Thigh − − 1000 − − 1000
Supply Current ICC mA
RL = ∞ Both Comparators, TA = 25°C − 0.6 1.0 − 0.6 1.0
RL = ∞ Both Comparators, VCC = 30 V − 0.75 2.5 − 0.75 2.5
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
LM393S Tlow = 0°C, Thigh = +70°C
LM2903S Tlow = −40°C, Thigh = +105°C
3. At output switch point, VO]1.4 Vdc, RS = 0 with VCC from 5.0 Vdc to 30 Vdc, and over the full input common mode range
(0 V to VCC = −1.5 V).
4. 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.
5. Input common mode of either input should not be permitted to go more than 0.3 V negative of ground or minus supply. The upper limit of
common mode range is VCC −1.5 V.
6. Response time is specified with a 100 mV step and 5.0 mV of overdrive. With larger magnitudes of overdrive faster response times are
obtainable.
7. The comparator will exhibit proper output state if one of the inputs becomes greater than VCC, the other input must remain within the common
mode range. The low input state must not be less than −0.3 V of ground or minus supply.
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4
APPLICATIONS INFORMATION
These dual comparators feature high gain, wide
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 (VOL to VOH). To alleviate
this situation, input resistors <10 k should be used.
The addition of positive feedback (<10 mV) is also
recommended. It is good design practice to ground all
unused pins.
Differential input voltages may be larger than supply
voltage without damaging the comparator’s inputs. Voltages
more negative than −0.3 V should not be used.
Figure 2. Zero Crossing Detector
(Single Supply) Figure 3. Zero Crossing Detector
(Split Supply)
Figure 4. Free−Running Square−Wave Oscillator Figure 5. Time Delay Generator
Figure 6. Comparator with Hysteresis
10
D1 prevents input from going negative by more than 0.6 V.
R1 + R2 = R3
R3 ≤R5 for small error in zero crossing.
Vin
10 k
D1
R1
8.2 k
6.8 k
R2
15 k
R3
+15 V
10 m
R5
220 k
R4
220 k
LM393S
Vin(min) [ 0.4 V peak for 1% phase distortion ().
*
+VCC
10 k
Vin
-VEE
Vin Vin(min)
VCC
VO
- VEE
LM393S
-
+
LM393S
51 k
51 k 51 k
RL
10 k
VCC
VCC
VCC
VO
VO
t
0
1.0 m
0.001 F
-
+
LM393S
VCC VCC
VO
Vin
VO
+ Vref
Vref
Vref
0
0
0
VC
tO
t
``ON'' for t tO + t
where:
t = RC ȏ n ( Vref
VCC )
R RL
VC C
LM393S
-
+
RS
VCC
RL
Vref
R1
R2
RS = R1 | | R2
Vth1 = Vref + (VCC -Vref) R1
R1 + R2 + RL
Vth2 = Vref - (Vref -VO Low) R1
R1 + R2
R1
tȏ
+
-
LM393S
)
*
)
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5
ORDERING INFORMATION
Device Operating Temperature Range Package Shipping†
LM393SNG 0°C to +70°CPDIP−8
(Pb−Free) 50 Units / Rail
LM2903SNG −40°C to +105°CPDIP−8
(Pb−Free) 50 Units / Rail
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
LM393S, LM2903S
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6
PACKAGE DIMENSIONS
PDIP−8
CASE 626−05
ISSUE N
14
58
b2
NOTE 8
D
b
L
A1
A
eB
E
A
TOP VIEW
C
SEATING
PLANE
0.010 CA
SIDE VIEW
END VIEW
END VIEW
WITH LEADS CONSTRAINED
DIM MIN MAX
INCHES
A−−−− 0.210
A1 0.015 −−−−
b0.014 0.022
C0.008 0.014
D0.355 0.400
D1 0.005 −−−−
e0.100 BSC
E0.300 0.325
M−−−− 10
−−− 5.33
0.38 −−−
0.35 0.56
0.20 0.36
9.02 10.16
0.13 −−−
2.54 BSC
7.62 8.26
−−− 10
MIN MAX
MILLIMETERS
NOTES:
1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994.
2. CONTROLLING DIMENSION: INCHES.
3. DIMENSIONS A, A1 AND L ARE MEASURED WITH THE PACK-
AGE SEATED IN JEDEC SEATING PLANE GAUGE GS−3.
4. DIMENSIONS D, D1 AND E1 DO NOT INCLUDE MOLD FLASH
OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS ARE
NOT TO EXCEED 0.10 INCH.
5. DIMENSION E IS MEASURED AT A POINT 0.015 BELOW DATUM
PLANE H WITH THE LEADS CONSTRAINED PERPENDICULAR
TO DATUM C.
6. DIMENSION E3 IS MEASURED AT THE LEAD TIPS WITH THE
LEADS UNCONSTRAINED.
7. DATUM PLANE H IS COINCIDENT WITH THE BOTTOM OF THE
LEADS, WHERE THE LEADS EXIT THE BODY.
8. PACKAGE CONTOUR IS OPTIONAL (ROUNDED OR SQUARE
CORNERS).
E1 0.240 0.280 6.10 7.11
b2
eB −−−− 0.430 −−− 10.92
0.060 TYP 1.52 TYP
E1
M
8X
c
D1
B
A2 0.115 0.195 2.92 4.95
L0.115 0.150 2.92 3.81
°°
H
NOTE 5
e
e/2 A2
NOTE 3
MBMNOTE 6
M
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P
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USA/Canada
Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
Japan Customer Focus Center
Phone: 81−3−5817−1050
LM393S/D
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