SA556-1F 데이터 시트보기 (PDF) - Philips Electronics
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SA556-1F Datasheet PDF : 5 Pages
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Philips Semiconductors Linear Products
Dual timer
Product specification
NE/SA/SE556/NE556-1
ELECTRICAL CHARACTERISTICS (Continued)
SYMBOL
PARAMETER
Matching characteristics4
Initial accuracy2
TEST CONDITIONS
SE556/556-1
Min Typ Max
NE/SA556/SE556C
NE556-1/SE556-1C
Min Typ Max
UNIT
0.5 1.0
1.0 2.0
%
Drift with temperature
Drift with supply voltage
10
0.1 0.2
±10
ppm/°C
0.2 0.5
%/V
NOTES:
1. Supply current when output is high is typically 1.0mA less.
2. Tested at VCC=5V and VCC=15V.
3. This will determine maximum value of RA+RB. For 15V operation, the max total R=10MΩ, and for 5V operation, the maximum total
R=3.4MΩ.
4. Matching characteristics refer to the difference between performance characteristics for each timer section in the monostable mode.
5. Specified with trigger input high. In order to guarantee reset the voltage at reset pin must be less than or equal to 0.4V. To disable reset
function, the voltage at reset pin has to be greater than 1V.
6. Time measured from a positive-going input pulse from 0 to 0.4 VCC into the threshold to the drop from high to low of the output. Trigger is
tied to threshold.
TYPICAL APPLICATIONS
One feature of the dual timer is that by utilizing both halves it is
possible to obtain sequential timing. By connecting the output of the
first half to the input of the second half via a 0.001µF coupling
capacitor sequential timing may be obtained. Delay t1 is determined
by the first half and t2 by the second half delay.
The first half of the timer is started by momentarily connecting Pin 6
to ground. When it is timed out (determined by 1.1R1C1) the second
half begins. Its duration is determined by 1.1R2C2.
VCC VCC
VCC
VCC VCC
NOTE:
All resistor values are in Ω.
INPUT
10k
.001
R1
1M
C1
1µF
4 10 14
1
12
13
2
556
8
5
6
9
7 11 3
.01 .01
Sequential Timer
R2
130k 10k
C2
50µF
.001
OUTPUT 1
OUTPUT 2
August 31, 1994
356
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