2001 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Rev. 1.0.3
Features
Single Supply Operation: 2V to 36V
Dual Supply Operation:
1V to
18V
Allow Comparison of Voltages Near Ground Potential
Low Current Drain 800
A Typ.
Compatible with all Forms of Logic
Low Input Bias Current 25nA Typ.
Low Input Offset Current
5nA Typ.
Low Offset Voltage
1mV Typ.
Description
The LM2903/LM2903I, LM393/LM393A, LM293/
LM293A consist of two independent voltage comparators
designed to operate from a single power supply over a wide
voltage range.
8-DIP
8-SOP
1
1
Internal Block Diagram
LM2903/LM2903I,LM393/LM393A,
LM293/LM293A
Dual Differential Comparator
LM2903/LM2903I,LM393/LM393A,
LM293/LM293A
2
Schematic Diagram
Absolute Maximum Ratings
Thermal Data
Parameter
Symbol
Value
Unit
Power Supply Voltage
V
CC
18 or 36
V
Differential Input Voltage
V
I(DIFF)
36
V
Input Voltage
V
I
- 0.3 to +36
V
Output Short Circuit to GND
-
Continuous
-
Power Dissipation, Ta = 25
C
8-DIP
8-SOP
P
D
1040
480
mW
Operating Temperature
LM393/LM393A
LM2903
LM2903I
LM293/LM293A
T
OPR
0 ~ +70
- 40 ~ +85
-40 ~ +105
-25 ~ +85
C
Storage Temperature
T
STG
- 65 ~ +150
C
Parameter
Symbol
Value
Unit
Thermal Resistance Junction-Ambient Max.
8-DIP
8-SOP
R
ja
120
260
C/W
LM2903/LM2903I,LM393/LM393A,
LM293/LM293A
3
Electrical Characteristics
(V
CC
= 5V, T
A
= 25
C, unless otherwise specified)
NOTE 1
LM393/LM393A: 0
T
A
+70
C
LM2903: -40
T
A
+85
C
LM2903I: -40
T
A
+105
C
LM293/LM293A : -25
T
A
+85
C
Parameter
Symbol
Conditions
LM293A/LM393A
LM293/LM393
Unit
Min.
Typ.
Max.
Min.
Typ.
Max.
Input Offset
Voltage
V
IO
V
O(P)
=1.4V, R
S
= 0
-
1
2
-
1
5
mV
V
CM
= 0 to1.5V Note 1
-
-
4.0
-
-
9.0
Input Offset
Current
I
IO
-
5
50
-
5
50
nA
Note 1
-
-
150
-
-
150
Input Bias
Current
I
BIAS
-
65
250
-
65
250
nA
Note 1
-
-
400
-
-
400
Input Common
Mode
Voltage Range
V
I(R)
0
-
V
CC
-1.5
0
-
V
CC
-1.5
V
Note 1
0
-
V
CC
-2
0
-
V
CC
-2
Supply Current
I
CC
R
L
=
,
V
CC
= 5V
-
0.6
1
-
0.6
1
mA
R
L
=
, V
CC
= 30V
-
0.8
2.5
-
0.8
2.5
Voltage Gain
G
V
V
CC
=15V, R
L
15K
(for large V
O(P-P)swing
)
50
200
-
50
200
-
V/mV
Large Signal
Response
Time
T
LRES
V
I
=TTL Logic Swing
V
REF
=1.4V, V
RL
= 5V,
R
L
= 5.1K
-
350
-
-
350
-
nS
Response
Time
T
RES
V
RL
=5V, R
L
=5.1K
-
1.4
-
-
1.4
-
S
Output Sink
Current
I
SINK
V
I(-)
1V, V
I(+)
=0V,
V
O(P)
1.5V
6
18
-
6
18
-
mA
Output
Saturation
Voltage
V
SAT
V
I(-)
1V, VI(+) = 0V
-
160
400
-
160
400
mV
I
SINK
= 4mA
Note 1
-
-
700
-
-
700
Output
Leakage
Current
I
O(LKG)
V
I(-)
= 0V,
V
I(+)
= 1V
V
O(P)
= 5V
-
0.1
-
-
0.1
-
nA
V
O(P)
= 30V
-
-
1.0
-
-
1.0
A
LM2903/LM2903I,LM393/LM393A,
LM293/LM293A
4
Electrical Characteristics
(Continued)
(V
CC
= 5V, T
A
= 25
C, unless otherwise specified)
Note 1
LM393/LM393A: 0
T
A
+70
C
LM2903: -40
T
A
+85
C
LM2903I: -40
T
A
+105
C
LM293/LM293A : -25
T
A
+85
C
Parameter
Symbol
Conditions
LM2903/LM2903I
Unit
Min.
Typ.
Max.
Input Offset Voltage
V
IO
V
O(P)
=1.4V, R
S
= 0
-
1
7
mV
V
CM
= 0 to 1.5V
Note 1
-
9
15
Input Offset Current
I
IO
-
5
50
nA
Note 1
-
50
200
Input Bias Current
I
BIAS
-
65
250
nA
Note 1
-
-
500
Input Common Mode
Voltage Range
V
I(R)
0
-
V
CC
-1.5
V
Note 1
0
-
V
CC
-2
Supply Current
I
CC
R
L
=
, V
CC
= 5V
-
0.6
1
mA
R
L
=
, V
CC
= 30V
-
1
2.5
Voltage Gain
G
V
V
CC
=15V, R
L
15K
(for large V
O(P-P)swing
)
25
100
-
V/mV
Large Signal Response Time
T
LRES
V
I
=TTL Logic Swing
V
REF
=1.4V, V
RL
= 5V, R
L
= 5.1K
-
350
-
nS
Response Time
T
RES
V
RL
= 5V, R
L
= 5.1K
-
1.5
-
S
Output Sink Current
I
SINK
V
I(-)
1V, V
I(+)
= 0V, V
O(P)
1.5V
6
16
-
mA
Output Saturation Voltage
V
SAT
V
I(-)
1V, VI(+) = 0V
-
160
400
mV
I
SINK
= 4mA
Note 1
-
-
700
Output Leakage Current
I
O(LKG)
V
I(-)
= 0V,
V
O(P)
= 5V
-
0.1
-
nA
V
I(+)
= 1V
V
O(P)
= 30V
-
-
1.0
A
LM2903/LM2903I,LM393/LM393A,
LM293/LM293A
5
Typical Performance Characteristics
Figure 1. Supply Current vs Supply Voltage
Figure 2. Input Current vs Supply Voltage
Figure 3. Output Saturation Voltage vs Sink Current
Figure 4. Response Time for Various Input
Overdrive-Negative Transition
Figure 5. Response Time for Various Input
Overdrive-Positive Transition
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