Electrical Characteristics
T
A
e
25 C unless otherwise specified (Note 2) (Continued)
Parameter
TIMER
Timer Threshold Voltage Pin 5
Input Bias Current Pin 5
All Devices
LM131 LM231 LM331
LM131A LM231A LM331A
V
SAT PIN 5
(Reset)
CURRENT SOURCE (Pin 1)
Output Current
LM131 LM131A LM231 LM231A
LM331 LM331A
Change with Voltage
Current Source OFF Leakage
LM131 LM131A
LM231 LM231A LM331 LM331A
All Devices
Operating Range of Current (Typical)
REFERENCE VOLTAGE (Pin 2)
LM131 LM131A LM231 LM231A
LM331 LM331A
Stability vs Temperature
Stability vs Time 1000 Hours
LOGIC OUTPUT (Pin 3)
V
SAT
OFF Leakage
SUPPLY CURRENT
LM131 LM131A LM231
LM231A
LM331 LM331A
V
S
e
5V
V
S
e
40V
V
S
e
5V
V
S
e
40V
20
25
15
20
30
40
30
40
40
60
60
80
mA
mA
mA
mA
I
e
5 mA
I
e
3 2 mA (2 TTL Loads) T
MIN
s
T
A
s
T
MAX
0 15
0 10
g
0 05
0 50
0 40
10
V
V
mA
1 76
1 70
1 89
1 89
g
60
g
0 1
Conditions
Min
0 63
Typ
0 667
g
10
Max
0 70
g
100
Units
c
V
S
V
S
e
15V
0V
s
V
PIN 5
s
9 9V
V
PIN 5
e
10V
V
PIN 5
e
10V
I
e
5 mA
R
S
e
14 kX V
PIN 1
e
0
126
116
0V
s
V
PIN 1
s
10V
200
200
0 22
1000
500
05
nA
nA
nA
V
135
136
02
0 01
0 02
20
(10 to 500)
144
156
10
10
10 0
50 0
mA
mA
mA
nA
nA
nA
mA
T
A
e
T
MAX
2 02
2 08
V
DC
V
DC
ppm C
%
Note 1
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur DC and AC electrical specifications do not apply when operating
the device beyond its specified operating conditions
Note 2
All specifications apply in the circuit of
Figure 3
with 4 0V
s
V
S
s
40V unless otherwise noted
Note 3
Nonlinearity is defined as the deviation of f
OUT
from V
IN
c
(10 kHz
b
10 V
DC
) when the circuit has been trimmed for zero error at 10 Hz and at 10 kHz
over the frequency range 1 Hz to 11 kHz For the timing capacitor C
T
use NPO ceramic Teflon or polystyrene
Note 4
Human body model 100 pF discharged through a 1 5 kX resistor
3
NSC [ NATIONAL SEMICONDUCTOR ]
