Datasheet
Electrical characteristics LM193, LM293, LM393
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3 Electrical characteristics
Table 3. V
CC
+
= +5V, V
CC
-
= 0V, T
amb
= +25°C (unless otherwise specified)
Symbol Parameter
LM193A - LM293A
LM393A
LM193- LM293
LM393
Unit
Min. Typ. Max. Min Typ. Max.
V
io
Input offset voltage
(1)
T
min
≤ T
amb
≤ T
max
12
4
15
9
mV
I
io
Input offset current
T
min
≤ T
amb
≤ T
max
325
100
550
150
nA
I
ib
Input bias current (I
+
or I
-
)
(2)
T
min
≤ T
amb
≤ T
max
25 100
300
25 250
400
nA
A
vd
Large signal voltage gain
V
CC
= 15V, R
L
= 15kΩ, V
o
= 1V to 11V
50 200 50 200 V/mV
I
CC
Supply current (all comparators)
V
CC
= +5V, no load
V
CC
= +30V, no load
0.4
1
1
2.5
0.4
1
1
2.5
mA
V
id
Differential input voltage
(3)
V
CC
+
V
CC
+
V
OL
Low level output voltage
V
id
= -1V, I
sink
= 4mA
T
min
≤ T
amb
≤ T
max
250 400
700
250 400
700
mV
I
OH
High level output current
V
CC
= V
o
= 30V, V
id
= 1V
T
min
≤ T
amb
≤ T
max
0.1
1
0.1
1
nA
μA
I
sink
Output sink current V
id
= 1V, V
o
= 1.5V 6 16 6 16 mA
t
re
Response time
(4)
R
L
= 5.1kΩ connected to V
CC
+
1.3 1.3 μs
t
rel
Large signal response time
R
L
= 5.1kΩ connected to V
CC
+
,
e
l
= TTL,
V
(ref)
= +1.4v
300 300 ns
1. At output switch point, V
o
≈ 1.4 V, R
s
= 0 with V
CC
+
from 5 V to 30 V, and over the full common-mode range (0 V to
V
CC
+
-1.5 V).
2. The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant,
independent of the state of the output, so no loading charge exists on the reference of input lines.
3. The response time specified is for a 100 mV input step with 5 mV overdrive. For larger overdrive signals 300 ns can be
obtained.
4. Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the
common-mode range, the comparator will provide a proper output state. The low input voltage state must not be less than
-0.3 V (or 0.3 V below the negative power supply, if used).