HCF4521B 查看數據表（PDF） - STMicroelectronics
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HCF4521B Datasheet PDF : 12 Pages
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TYPICAL DATA FOR CRYSTAL OSCILLATOR CIRCUIT
CHARACTERISTIC
Crystal Characteristics
External Resistor/Capacitor Values
Frequency Stability
Frequency Change as a Function
of VDD (TA = 25°C
Frequency Change as a Function
of temperature VDD = 10V
TA Change from -55°C to 25°C
Resonant Frequency
Equivalent Resistance, Rs
RO
CT
CS
VDD Change from 5V to 10V
VDD Change from 10V to 15V
HCF4521B only
Complete Oscillator *
TA Change from 25°C to 125°C
HCF4521B only
Complete Oscillator *
* Complete oscillator includes crystal, capacitors and resistors.
CRYSTAL OSCILLATOR CIRCUIT
500 kHz
CIRCUIT
500
1
47
82
20
6
2
-4
100
-2
160
HCF4521B
50 kHz
CIRCUIT
50
6.2
750
82
20
2
2
-2
120
-2
-560
UNIT
kHz
kΩ
kΩ
pF
pF
ppm
ppm
ppm
ppm
ppm
ppm
9/12
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