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參數(shù)資料
| 型號： | NCV1455BDR2 |
| 廠商： | ON Semiconductor |
| 文件頁數(shù)： | 9/11頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC OSC MONO TIMING 8SOIC |
| 產(chǎn)品變化通告： | Product Obsolescence 11/Feb/2009 |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | 555 型，計時器/振蕩器（單路） |
| 電源電壓： | 4.5 V ~ 16 V |
| 電流 - 電源： | 10mA |
| 工作溫度： | -40°C ~ 125°C |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 包裝： | 帶卷 (TR) |
| 供應(yīng)商設(shè)備封裝： | 8-SOICN |
| 安裝類型： | 表面貼裝 |
| 其它名稱： | NCV1455BDR2OS |
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 |
|---|---|
| NCV1455BDR2G | 功能描述:計時器和支持產(chǎn)品 567 Timer Commercial Temp 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 |
| NCV2001 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:0.9 V, Rail−to−Rail, Single Operational Amplifier |
| NCV2001SN2T1G | 功能描述:運(yùn)算放大器 - 運(yùn)放 SNGL OPERATIONAL AMP 0.9V RAIL TO RAIL RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| NCV2001SQ2T2G | 功能描述:運(yùn)算放大器 - 運(yùn)放 ANA SINGL OP AMP 1V 1MHZ RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| NCV2002 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Sub-One Volt Rail-to-Rail Operational Amplifier with Enable Feature |
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