If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage
Power Dissipation (Note 3)
LM555CM, LM555CN
LM555CMM
Operating Temperature Ranges
LM555C
Storage Temperature Range
0˚C to +70˚C
−65˚C to +150˚C
1180 mW
613 mW
+18V
Soldering Information
Dual-In-Line Package
Soldering (10 Seconds)
Small Outline Packages
(SOIC and MSOP)
Vapor Phase (60 Seconds)
Infrared (15 Seconds)
215˚C
220˚C
260˚C
See AN-450 “Surface Mounting Methods and Their Effect
on Product Reliability” for other methods of soldering
surface mount devices.
Electrical Characteristics
(Notes 1, 2)
(T
A
= 25˚C, V
CC
= +5V to +15V, unless othewise specified)
Parameter
Conditions
Min
Supply Voltage
Supply Current
V
CC
= 5V, R
L
=
∞
V
CC
= 15V, R
L
=
∞
(Low State) (Note 4)
4.5
3
10
Limits
LM555C
Typ
Max
16
6
15
V
mA
Units
Timing Error, Monostable
Initial Accuracy
Drift with Temperature
Accuracy over Temperature
Drift with Supply
Timing Error, Astable
Initial Accuracy
Drift with Temperature
Accuracy over Temperature
Drift with Supply
Threshold Voltage
Trigger Voltage
Trigger Current
Reset Voltage
Reset Current
Threshold Current
Control Voltage Level
Pin 7 Leakage Output High
Pin 7 Sat (Note 7)
Output Low
Output Low
V
CC
= 15V, I
7
= 15mA
V
CC
= 4.5V, I
7
= 4.5mA
180
80
200
mV
mV
(Note 6)
V
CC
= 15V
V
CC
= 5V
9
2.6
0.4
V
CC
= 15V
V
CC
= 5V
R
A
, R
B
= 1k to 100kΩ,
C = 0.1µF, (Note 5)
3.0
0.30
0.667
5
1.67
0.5
0.5
0.1
0.1
10
3.33
1
0.9
1
0.4
0.25
11
4
100
%
%/V
x V
CC
V
V
µA
V
mA
µA
V
nA
2.25
150
%
ppm/˚C
R
A
= 1k to 100kΩ,
C = 0.1µF, (Note 5)
1.5
0.1
%
%/V
1
50
%
ppm/˚C
3
www.national.com
LM555
Electrical Characteristics
(Notes 1, 2)
(T
A
= 25˚C, V
CC
Parameter
(Continued)
= +5V to +15V, unless othewise specified)
Conditions
Min
Limits
LM555C
Typ
0.1
0.4
2
2.5
Max
0.25
0.75
2.5
V
V
V
V
V
0.25
12.5
12.75
2.75
13.3
3.3
100
100
0.35
V
V
V
V
ns
ns
Units
Output Voltage Drop (Low)
V
CC
= 15V
I
SINK
= 10mA
I
SINK
= 50mA
I
SINK
= 100mA
I
SINK
= 200mA
V
CC
= 5V
I
SINK
= 8mA
I
SINK
= 5mA
Output Voltage Drop (High)
I
SOURCE
= 200mA, V
CC
= 15V
I
SOURCE
= 100mA, V
CC
= 15V
V
CC
= 5V
Rise Time of Output
Fall Time of Output
Note 1:
All voltages are measured with respect to the ground pin, unless otherwise specified.
Note 2:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which
guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit
is given, however, the typical value is a good indication of device performance.
Note 3:
For operating at elevated temperatures the device must be derated above 25˚C based on a +150˚C maximum junction temperature and a thermal
resistance of 106˚C/W (DIP), 170˚C/W (S0-8), and 204˚C/W (MSOP) junction to ambient.
Note 4:
Supply current when output high typically 1 mA less at V
CC
= 5V.
Note 5:
Tested at V
CC
= 5V and V
CC
= 15V.
Note 6:
This will determine the maximum value of R
A
+ R
B
for 15V operation. The maximum total (R
A
+ R
B
) is 20MΩ.
Note 7:
No protection against excessive pin 7 current is necessary providing the package dissipation rating will not be exceeded.
Note 8:
Refer to RETS555X drawing of military LM555H and LM555J versions for specifications.
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