參數(shù)資料
型號(hào)： 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(dòng)晶體振蕩器或陶瓷諧振器
文件頁(yè)數(shù)： 9/16頁(yè)
文件大?。?/td> 309K
代理商： SN74LVC1404YEPR
www.ti.com
APPLICATION INFORMATION
CTRL
(1)
R
s
1 k
C
L
16 pF
C
2
32 pF
XOUT
XIN
OSCOUT
Y
A
Optional Signal-Conditioning Stage
C
LOAD
R
LOAD
C
LOAD
R
F
2.2 M
C
1
32 pF
GND
1
2
3
4
5
6
7
8
V
CC
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.
B) Oscillator Circuit in DCT or DCU Pinout
Practical Design Tips
SN74LVC1404
OSCILLATOR DRIVER
FOR CRYSTAL OSCILLATOR OR CERAMIC RESONATOR
SCES469C–AUGUST 2003–REVISED JULY 2005
The open-loop gain of the unbuffered inverter decreases as power-supply voltage decreases. This decreases
the closed-loop gain of the oscillator circuit. The value of R
s
can be decreased to increase the closed-loop
gain, while maintaining the power dissipation of the crystal within the maximum limit.
R
s
and C
2
form a low-pass filter and reduce spurious oscillations. Component values can be adjusted, based
on the desired cutoff frequency.
C
2
can be increased over C
1
to increase the phase shift and help in start-up of the oscillator. Increasing C
2
may affect the duty cycle of the output voltage.
At high frequency, phase shift due to R
s
becomes significant. In this case, R
s
can be replaced by a capacitor
to reduce the phase shift.
9
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參數(shù)描述
SN74LVC1404YZPR 功能描述:時(shí)鐘驅(qū)動(dòng)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(lèi)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(lèi)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(shí)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(lèi)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(shí)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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