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參數(shù)資料
| 型號： | SN74LVC1404YEPR |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | OSCILLATOR DRIVER FOR CRYSTAL OSCILLATOR OR CERAMIC RESONATOR |
| 中文描述： | 振蕩器驅(qū)動晶體振蕩器或陶瓷諧振器 |
| 文件頁數(shù)： | 8/16頁 |
| 文件大?。?/td> | 309K |
| 代理商： | SN74LVC1404YEPR |
www.ti.com
APPLICATION INFORMATION
C
are chosen so that
maximum power dissipation of the crystal. Generally, the recommended value of R
s
is specified in the crystal
manufacturer's data sheet and, usually, this value is approximately equal to the reactance of C
2
at resonance
C
L
C
1
C
2
C
1
C
2
and C
≈
C
. R
is the current-limiting resistor, and the value depends on the
frequency, i.e.,
operation. Usually, the value is chosen to be within 1 M
to 10 M
.
R
s
X
C2
. R
F
is the feedback resistor that is used to bias the inverter in the linear region of
CTRL
(1)
R
F
2.2 M
C
L
16 pF
C
1
32 pF
C
2
32 pF
XOUT
XIN
OSCOUT
Y
A
Optional Signal-Conditioning Stage
C
LOAD
R
LOAD
C
LOAD
R
LOAD
(1) CTRL should be tied to logic high during normal operation of the oscillator circuit. To disable the oscillator circuit, connect CTRL to logic low.
A) Logic Diagram View
R
s
1 k
SN74LVC1404
OSCILLATOR DRIVER
FOR CRYSTAL OSCILLATOR OR CERAMIC RESONATOR
SCES469C–AUGUST 2003–REVISED JULY 2005
Figure 3
shows a typical application of the SN74LVC1404 in a Pierce oscillator circuit. The output voltage can be
conditioned further by connecting OSCOUT to the Schmitt-trigger input inverter. The Schmitt-trigger input inverter
produces a rail-to-rail voltage waveform. The recommended load for the crystal, shown in this example, is 16 pF.
The value of the recommended load (C
L
) can be found in the crystal manufacturer's data sheet. Values of C
1
and
Figure 3. Oscillator Circuit
8
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SN74LVC1404YZPR | 功能描述:時鐘驅(qū)動器及分配 OscillatrDrivrCrystl Osclltrr Crmc Rsntr RoHS:否 制造商:Micrel 乘法/除法因子:1:4 輸出類型:Differential 最大輸出頻率:4.2 GHz 電源電壓-最大: 電源電壓-最小:5 V 最大工作溫度:+ 85 C 封裝 / 箱體:SOIC-8 封裝:Reel |
| SN74LVC14AD | 功能描述:變換器 Hex Schmitt-Trigger RoHS:否 制造商:NXP Semiconductors 電路數(shù)量:6 邏輯系列:74ABT 邏輯類型:BiCMOS 高電平輸出電流:- 15 mA 低電平輸出電流:20 mA 傳播延遲時間:2.2 ns 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 工作溫度范圍: 封裝 / 箱體:DIP-14 封裝:Tube |
| SN74LVC14AD | 制造商:Texas Instruments 功能描述:74LVC SMD 74LVC14 SOIC14 3.6V |
| SN74LVC14AD | 制造商:Texas Instruments 功能描述:Gate / Inverter Logic IC Logic Type:Inve |
| SN74LVC14ADBR | 功能描述:變換器 Hex Schmitt Trigger RoHS:否 制造商:NXP Semiconductors 電路數(shù)量:6 邏輯系列:74ABT 邏輯類型:BiCMOS 高電平輸出電流:- 15 mA 低電平輸出電流:20 mA 傳播延遲時間:2.2 ns 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 工作溫度范圍: 封裝 / 箱體:DIP-14 封裝:Tube |
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