Datasheet

LM555
www.ti.com SNAS548B –MAY 2004–REVISED JULY 2006
Electrical Characteristics
(1) (2)
(T
A
= 25°C, V
CC
= +5V to +15V, unless otherwise specified)
Parameter Conditions Limits Units
LM555C
Min Typ Max
Supply Voltage 4.5 16 V
Supply Current V
CC
= 5V, R
L
= ∞ 3 6
V
CC
= 15V, R
L
= ∞ 10 15 mA
(Low State)
(3)
Timing Error, Monostable
Initial Accuracy 1 %
Drift with Temperature R
A
= 1k to 100kΩ, 50 ppm/°C
C = 0.1μF,
(4)
Accuracy over Temperature 1.5 %
Drift with Supply 0.1 %/V
Timing Error, Astable
Initial Accuracy 2.25 %
Drift with Temperature R
A
, R
B
= 1k to 100kΩ, 150 ppm/°C
C = 0.1μF,
(4)
Accuracy over Temperature 3.0 %
Drift with Supply 0.30 %/V
Threshold Voltage 0.667 x V
CC
Trigger Voltage V
CC
= 15V 5 V
V
CC
= 5V 1.67 V
Trigger Current 0.5 0.9 μA
Reset Voltage 0.4 0.5 1 V
Reset Current 0.1 0.4 mA
Threshold Current
(5)
0.1 0.25 μA
Control Voltage Level V
CC
= 15V 9 10 11
V
V
CC
= 5V 2.6 3.33 4
Pin 7 Leakage Output High 1 100 nA
Pin 7 Sat
(6)
Output Low V
CC
= 15V, I
7
= 15mA 180 mV
Output Low V
CC
= 4.5V, I
7
= 4.5mA 80 200 mV
Output Voltage Drop (Low) V
CC
= 15V
I
SINK
= 10mA 0.1 0.25 V
I
SINK
= 50mA 0.4 0.75 V
I
SINK
= 100mA 2 2.5 V
I
SINK
= 200mA 2.5 V
V
CC
= 5V
I
SINK
= 8mA V
I
SINK
= 5mA 0.25 0.35 V
Output Voltage Drop (High) I
SOURCE
= 200mA, V
CC
= 15V 12.5 V
(1) All voltages are measured with respect to the ground pin, unless otherwise specified.
(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.
(3) Supply current when output high typically 1 mA less at V
CC
= 5V.
(4) Tested at V
CC
= 5V and V
CC
= 15V.
(5) This will determine the maximum value of R
A
+ R
B
for 15V operation. The maximum total (R
A
+ R
B
) is 20MΩ.
(6) No protection against excessive pin 7 current is necessary providing the package dissipation rating will not be exceeded.
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