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參數(shù)資料
| 型號： | MM54C221 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | Dual CMOS Monostable Multivibrator(雙CMOS單穩(wěn)態(tài)多諧振蕩器) |
| 中文描述： | 雙通道CMOS單穩(wěn)態(tài)觸發(fā)器（雙的CMOS單穩(wěn)態(tài)多諧振蕩器） |
| 文件頁數(shù)： | 6/10頁 |
| 文件大?。?/td> | 229K |
| 代理商： | MM54C221 |
Solving for t
O
gives:
Pulse Width Error is then:
Substituting Equations 2 and 4 gives:
This function is plotted in Figure 12 for r
ON
of 50
, 25
, and
16.7
. These are the typical values of r
ON
for a V
CC
of 5V,
10V and 15V respectively.
As an example, assume that the pulse width error due to r
must be less than 0.5% operating at V
= 5V. The typical
value of r
for V
CC
= 5V is 50
. Referring to the 50
curve
in Figure 12 R
must be greater than 10 k
to maintain
this accuracy.At V
=10V, R
must be greater than 5 k
as can be seen from the 25
curve in Figure 12
Although clearly shown in the MM54C221/MM74C221 data
sheet, it is worthwhile, for the sake of clarity, to point out that
the parasitic capacitance between pins 7(15) and 6(14) is
typically 15 pF This capacitor is in parallel with C
EXT
and
must be taken into account when accuracy is critical.
TYPICAL APPLICATIONS
AN006023-12
FIGURE 12. Percentage Pulse Width Error
Due to Finite r
ON
of Transistor N1 vs R
EXT
Basic One-Shot Oscillator
AN006023-13
www.fairchildsemi.com
6
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MM54C221 WAF | 制造商:Texas Instruments 功能描述: |
| MM54C221J | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual Monostable Multivibrator |
| MM54C221J/883 | 制造商:National Semiconductor Corporation 功能描述:Monostable Multivibrator Dual |
| MM54C221N | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual Monostable Multivibrator |
| MM54C221W/883 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
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