CF5005B Datasheet, PDF (6/7 Pages) Nippon Precision Circuits Inc – High-frequency Crystal Oscillator Module ICs

Load cct 1
CF5005B series
Q output
CL
(Including probe capacitance)
C_L = 15pF
Switching Time Measurement Waveform
t_r , t_f , DUTY
Q output
0.9VDD
0.1VDD
TW
tr
Output duty cycle
0.9VDD
0.1VDD
DUTY measurement
voltage (0.5V DD)
tf
Q output
TW
T
DUTY measurement
voltage (0.5VDD)
DUTY= TW/ T 100 (%)
Output Enable/Disable Delay
The following figure shows the oscillator timing during normal operation. Note that when the device is in
standby, the oscillator stops. When standby is released, the oscillator starts and stable oscillator output occurs
after a short delay.
INHN
Q output
VIL
tPLZ
VIH
tPZL
INHN input waveform tr = tf 10ns
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