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參數(shù)資料
| 型號： | TS555CJ |
| 英文描述： | Analog Timer Circuit |
| 中文描述： | 模擬定時器電路 |
| 文件頁數(shù)： | 9/12頁 |
| 文件大?。?/td> | 84K |
| 代理商： | TS555CJ |
ASTABLE OPERATION
When the circuit is connectedas shown in figure 4
(pin 2 and 6 connected) it triggers itself and free
runs as a multivibrator. The external capacitor
charges through R
A
and R
B
and discharges
through R
B
only. Thus the duty cycle may be pre-
cisely set by the ratio of these two resistors.
In the astable mode of operation, C charges and
dischargesbetween1/3 V
CC
and2/3 V
CC
. Asinthe
triggered mode, the charge and discharge times
and therefore frequency, are independent of the
supply voltage.
Figure5showsactualwaveformsgeneratedinthis
mode of operation.
The charge time (output HIGH)is given by :
t1 = 0.693 (R
A
+ R
B
) C
and the dischargetime (output LOW) by :
t2 = 0.693 (R
B
) C
Thus the total period T is given by :
T = t1 + t2 = 0.693 (R
A
+ 2R
B
) C
The frequencyof oscillation is then :
f
=
1
T
=
(
R
A
+
2
R
B
)
C
1.44
The duty cycle is given by : D
=
R
B
R
A
+
2
R
B
V
CC
Reset
Out
3
4
8
7
5
1
TS555
R
C
2
6
R
A
B
Control
Voltage
0.01 F
Figure4
t = 0.5ms / div
OUTPUTVOLTAGE = 5.0V/div
CAPACITOR VOLTAGE = 1.0V/div
RA
B
L
Figure 5
TS555C,I,M
9/12
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| TS555IJ | Analog Timer Circuit |
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| TS555CD | LOW POWER SINGLE CMOS TIMERS |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TS555CN | 功能描述:計時器和支持產(chǎn)品 Low Power Single RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| TS555CN | 制造商:STMicroelectronics 功能描述:IC TIMER LOW POWER CMOS DIP8 555 |
| TS555CP | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW POWER SINGLE CMOS TIMERS |
| TS555CPT | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Low power single CMOS timer |
| TS555I | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW POWER SINGLE CMOS TIMER |
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