Datasheet
LMC555
SNAS558J –FEBRUARY 2000–REVISED MARCH 2013
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Electrical Characteristics
(1) (2)
Test Circuit, T = 25°C, all switches open, RESET to V
S
unless otherwise noted
Units
Parameter Test Conditions Min Typ Max
(Limits)
I
S
Supply Current V
S
= 1.5V 50 150
V
S
= 5V 100 250 µA
V
S
= 12V 150 400
V
CTRL
Control Voltage V
S
= 1.5V 0.8 1.0 1.2
V
S
= 5V 2.9 3.3 3.8 V
V
S
= 12V 7.4 8.0 8.6
V
DIS
Discharge Saturation Voltage V
S
= 1.5V, I
DIS
= 1 mA 75 150
mV
V
S
= 5V, I
DIS
= 10 mA 150 300
V
OL
Output Voltage (Low) V
S
= 1.5V, I
O
= 1 mA 0.2 0.4
V
S
= 5V, I
O
= 8 mA 0.3 0.6 V
V
S
= 12V, I
O
= 50 mA 1.0 2.0
V
OH
Output Voltage V
S
= 1.5V, I
O
= −0.25 mA 1.0 1.25
(High) V
S
= 5V, I
O
= −2 mA 4.4 4.7 V
V
S
= 12V, I
O
= −10 mA 10.5 11.3
V
TRIG
Trigger Voltage V
S
= 1.5V 0.4 0.5 0.6
V
V
S
= 12V 3.7 4.0 4.3
I
TRIG
Trigger Current V
S
= 5V 10 pA
V
RES
Reset Voltage V
S
= 1.5V
(3)
0.4 0.7 1.0
V
V
S
= 12V 0.4 0.75 1.1
I
RES
Reset Current V
S
= 5V 10 pA
I
THRESH
Threshold Current V
S
= 5V 10 pA
I
DIS
Discharge Leakage V
S
= 12V 1.0 100 nA
t Timing Accuracy SW 2, 4 Closed
V
S
= 1.5V 0.9 1.1 1.25
ms
V
S
= 5V 1.0 1.1 1.20
V
S
= 12V 1.0 1.1 1.25
Δt/ΔV
S
Timing Shift with Supply V
S
= 5V ± 1V 0.3 %/V
Δt/ΔT Timing Shift with Temperature V
S
= 5V 75 ppm/°C
f
A
Astable Frequency SW 1, 3 Closed, V
S
= 12V 4.0 4.8 5.6 kHz
f
MAX
Maximum Frequency Max. Freq. Test Circuit, V
S
= 5V 3.0 MHz
t
R
, t
F
Output Rise and Max. Freq. Test Circuit 15 ns
Fall Times V
S
= 5V, C
L
= 10 pF
t
PD
Trigger Propagation Delay V
S
= 5V, Measure Delay
100 ns
from Trigger to Output
(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 ensure specific performance limits. Electrical Characteristics state DC and AC electrical
specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within the
Operating Ratings. Specifications are not ensured for parameters where no limit is given, however, the typical value is a good indication
of device performance.
(3) If the RESET pin is to be used at temperatures of −20°C and below V
S
is required to be 2.0V or greater.
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