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參數(shù)資料
| 型號： | MC1455DR2G |
| 廠商： | ON Semiconductor |
| 文件頁數(shù)： | 9/11頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC OSC MONO TIMING 8-SOIC |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 類型： | 555 型，計(jì)時器/振蕩器（單路） |
| 電源電壓： | 4.5 V ~ 16 V |
| 電流 - 電源： | 10mA |
| 工作溫度： | 0°C ~ 70°C |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 包裝： | 剪切帶 (CT) |
| 供應(yīng)商設(shè)備封裝： | 8-SOICN |
| 安裝類型： | 表面貼裝 |
| 其它名稱： | MC1455DR2GOSCT |
MC1455, MC1455B, NCV1455B
http://onsemi.com
7
APPLICATIONS INFORMATION
Linear Voltage Ramp
In the monostable mode, the resistor can be replaced by a
constant current source to provide a linear ramp voltage. The
capacitor still charges from 0 VCC to 2/3 VCC. The linear
ramp time is given by:
t = 2
3
VCC
1
, where I =
VCC VB VBE
RE
If VB is much larger than VBE, then t can be made
independent of VCC.
Missing Pulse Detector
The timer can be used to produce an output when an input
pulse fails to occur within the delay of the timer. To
accomplish this, set the time delay to be slightly longer than
the time between successive input pulses. The timing cycle
is then continuously reset by the input pulse train until a
change in frequency or a missing pulse allows completion of
the timing cycle, causing a change in the output level.
Figure 20. Linear Voltage Sweep Circuit
Figure 21. Missing Pulse Detector
Figure 22. Linear Voltage Ramp Waveforms
Figure 23. Missing Pulse Detector Waveforms
Discharge
Threshold
VCC
Reset
4
3
Digital
Output
2
Trigger
1
MC1455
8VCC
RE
R1
2N4403
or Equiv
VB
R2
C
7
6
5
Sweep
Output
0.01
mF
Control
Voltage
+VCC (5.0 V to 15 V)
Reset
RL
VCC
RA
7
6
5
Control
Voltage
0.01
mF
1
Trigger
Input
Output
48
C
2N4403
or Equiv
MC1455
t = 100
ms/cm
VE
3
2
t = 500
ms/cm
(RE = 10 kW, R2 = 100 kW, R1 = 39 kW, C = 0.01 mF, VCC = 15 V)
(RA = 2.0 kW, RL = 1.0 kW, C = 0.01 mF, VCC = 15 V)
I
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC1455G | 制造商:Motorola Inc 功能描述: |
| MC1455P1 | 功能描述:計(jì)時器和支持產(chǎn)品 ANA TIMING CIRCUIT 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 |
| MC1455P1D | 制造商:Motorola Inc 功能描述: |
| MC1455P1G | 功能描述:計(jì)時器和支持產(chǎn)品 ANA TIMING CIRCUIT 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 |
| MC14568BD | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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