CF5034 Datasheet, PDF (4/6 Pages) Nippon Precision Circuits Inc – 350MHz PECL-output Oscillator ICs

CF5034 series
AC Characteristics
Recommended operating conditions unless otherwise noted.
Parameter
Symbol
Conditions
Rating
Unit
Min
Typ
Max
Output duty cycle 1
Output duty cycle 2
Output swing¹
Duty 1
Measurement cct. 3,
measured at output crossing point,
Ta = 25°C, V_CC = 3.3V
45
–
55
%
Duty 2
Measurement cct. 3,
measured at 50% output swing,
Ta = 25°C, V_CC = 3.3V
45
–
55
%
V_Opp
Measurement cct. 1, Ta = T_OPR, f = 350MHz,
Peak to peak of output waveform
0.4
–
–
V
Output rise time
t_r
Measurement cct. 3,
20 to 80% output swing
–
0.5
1
ns
Output fall time
Output enable time²
Output disable time²
t_f
Measurement cct. 3,
80 to 20% output swing
t_OE Measurement cct. 1, Ta = 25°C
t_OD Measurement cct. 1, Ta = 25°C
–
0.5
1
ns
–
–
200
ns
–
–
200
ns
1. The said values are measured by using the NPC standard jig.
2. The built-in oscillator stop function does not operate with normal output immediately when OE goes HIGH. Instead, normal output occurs after the
oscillator startup time has elapsed.
tr
tf
OUTN
OUT
tW
tPER
DUTY = tW/tPER 100
OE
OE input waveform tr = tf 10ns
80%
20%
tOD
tOE
Timing chart
VOpp
VDD
VOH
VOL
VDD – 2V
VSS
VDD
VIH
VIL
VSS
NIPPON PRECISION CIRCUITS INC.—4