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LM556/I
DUAL TIMER
ELECTRICAL CHARACTERISTICS
(TA = 25
°C, V
CC = 5 ~ 15V, unless otherwise specified)
Notes:
1. Supply current when output is high is typically 1.0mA less at V
CC = 5V
2. Tested at V
CC = 5V and VCC = 15V
3. This will determine the maximum value of R
A + RB for 15V operation.
The maximum total R = 20M
, and for 5V operation the maximum total R = 6.6M.
4. Matching characteristics refer to the difference between performance characteristics of each timer section in
the monostable mode.
5. As reset voltage lowers, timing is inhibited and then the output goes low.
Characteristic
Symbol
Test Conditions
Min
Typ
Max
Unit
High Output Voltage
VOH
VCC = 15V
ISOURCE = 200mA
ISOURCE = 100mA
12.75
12.5
13.3
V
VCC = 5V
ISOURCE = 100mA
2.75
3.3
V
Rise Time of Output
tR
100
300
ns
Fall Time of Output
t F
100
300
ns
Discharge Leakage Current
ILKG
10
100
nA
4 Matching Characteristics
Initial Accuracy
Drift with Temperature
Drfit with Supply Voltage
ACCUR
t/T
t/V
CC
1.0
10
0.2
2.0
0.5
%
ppm/
°C
%/V
2 Timing Error (astable)
Initial Accuracy
Drift with Temperature
Drift with Supply Voltage
ACCUR
t/T
RA,RB = 1k
to 100k
C = 0.1
F
VCC = 15V
2.25
150
0.3
%
ppm/
°C
%/V
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