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参数资料
| 型号： | TS3V556 |
| 厂商： | 意法半导体 |
| 英文描述： | 3V LOW POWER DUAL TIMERS |
| 中文描述： | 3V的低功耗双定时器 |
| 文件页数： | 6/8页 |
| 文件大小： | 63K |
| 代理商： | TS3V556 |
TS3V556
6/8
V
CC
Reset
Out
R
C
R
A
B
Control
Voltage
0.01 F
TS3V556
Figure 4
t = 0.5 ms / div
OUTPUT VOLTAGE = 5.0V/div
CAPACITOR VOLTAGE = 1.0V/div
RA
B
L
Figure 5
ASTABLE OPERATION
When the circuit is connected as shown in
figure 4 , it triggers itself and free runs as a
multivibrator. The external capacitor charges
throughR
A
andR
B
and dischargesthroughR
B
only.
Thus theduty cycle may beprecisely set by the ra-
tio of these two resistors.
In the astable mode of operation, C charges and
dischargesbetween 1/3V
CC
and 2/3V
CC
.As inthe
triggered mode, the charge and discharge times
and therefore frequency, are independent of the
supply voltage.
Figure5 shows actualwaveforms generated inthis
mode of operation.
The charge time (output HIGH) is given by :
t1 = 0.693 (R
A
+ R
B
) C
and the discharge time (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 frequency of oscillation is then :
f
T
R
R )C
+
2
(
A
=
=
1
144
.
The duty cycle is given by :D
R
+
R
R
=
B
A
B
2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TS3V556AID | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog Timer Circuit |
| TS3V556AIN | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog Timer Circuit |
| TS3V556I | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:3V LOW POWER DUAL TIMERS |
| TS3V556ID | 功能描述:计时器和支持产品 USE 511-TS556ID RoHS:否 制造商:Micrel 类型:Standard 封装 / 箱体:SOT-23 内部定时器数量:1 电源电压-最大:18 V 电源电压-最小:2.7 V 最大功率耗散: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Reel |
| TS3V556IDT | 制造商:STMicroelectronics 功能描述:STD TIMER DUAL 14SOIC - Tape and Reel |
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