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參數(shù)資料
| 型號： | SE556 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Dual timer(雙定時(shí)器) |
| 中文描述： | 雙計(jì)時(shí)器（雙定時(shí)器） |
| 文件頁數(shù)： | 4/5頁 |
| 文件大?。?/td> | 103K |
| 代理商： | SE556 |
Philips Semiconductors Linear Products
Product specification
NE/SA/SE556/NE556-1
Dual timer
August 31, 1994
356
ELECTRICAL CHARACTERISTICS
(Continued)
SYMBOL
PARAMETER
TEST CONDITIONS
SE556/556-1
NE/SA556/SE556C
NE556-1/SE556-1C
Min
Typ
UNIT
Min
Typ
Max
Max
Matching characteristics
4
Initial accuracy
2
Drift with temperature
Drift with supply voltage
0.5
10
0.1
1.0
1.0
±
10
0.2
2.0
%
ppm/
°
C
%/V
0.2
0.5
NOTES:
1. Supply current when output is high is typically 1.0mA less.
2. Tested at V
CC
=5V and V
CC
=15V.
3. This will determine maximum value of R
A
+R
B
. For 15V operation, the max total R=10M
, and for 5V operation, the maximum total
R=3.4M
.
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 V
CC
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 0.001
μ
F coupling
capacitor sequential timing may be obtained. Delay t
1
is determined
by the first half and t
2
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 1.1R
1
C
1
) the second
half begins. Its duration is determined by 1.1R
2
C
2
.
Sequential Timer
All resistor values are in
.
NOTE:
V
CC
V
CC
V
CC
V
CC
V
CC
INPUT
OUTPUT 1
OUTPUT 2
50
μ
F
10k
1M
1
2
6
7
11
3
9
5
8
13
12
14
10
4
556
.01
.001
C
1
1
μ
F
C
2
R
2
130k
R
1
.001
.01
10k
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