
75 South Street, Hopkinton, MA 01748 800-982-5737 508-435-6831 FAX 508-435-5289 www.valpeyfisher.com
1
VFAC570
HCMOS/TTL Compatible
Surface Mount Clock Oscillators
Features
Wide Frequency Range
Very Low Phase Jitter
EMI Shielded
Tight Duty Cycle Available
Wide Temperature Range
(-55 C to ± 125 C) Available
Tristate Control Standard
Absolute
Max.
Ratings
Electrical
Notes:
1. Up to ±20ppm available.
2. Current is load and frequency dependent.
3. Standard symmetry, tighter available.
All specifications are subject to change without notice.
Electrical
Connections
Parameter
Symb
Condition
Min
Typ
Max
Unit
Note
Input Break
Down Voltage
Vcc
–0.5
7
V
Storage Temp.
Ts
–55
+125
°C
Frequency
Range
F
4.0
160
MHz
Frequency
Stability
F/F
Overall conditions
including:
calibration, temp.,
aging 10 yrs,
shock, vibration
±100
ppm
1
Input Voltage
Vcc
4.75
3.15
5.00
3.30
5.25
3.45
V
Std LV
Opt.
Input Current
Icc
F = 100MHz
15pF Load
50
mA
2
Load
10 TTL gates or 50pF MAX, AC coupled 50 Ohm termination recommended
Duty Cycle
@1.4V
@50%Vcc
40
50
60
%
3
Rise/Fall Time
Tr/Tf
0.4V to 2.4V
20% to 80%
1.5
ns
Logic “1” Level
Voh
Max Load
0.9Vcc
V
Logic “0” Level
Vol
Max Load
0.1Vcc
V
Start–up Time
Ts
2
10
ms
Phase Jitter
1
ps
fj>1KHz
Tristate Function
Input HIGH (>2.5v) or floating: ACTIVE
Input LOW (<0.5v): INFINITE IMPEDANCE
Enable/
Disable Time
Ts
100
ns
Operating
Temperature
Range
0C to +70C (-40C to +85C, and -55C to +125C available)
Mechanical
Shock
Per MIL-STD-202, Method 213, Cond. E
Thermal Shock
Per MIL-STD-883, Method 1011, Cond. A
Vibration
Per MIL-STD-883, Method 2007, Cond. A
Soldering
Conditions
260C for 10s, Max.
Hermetic Seal
Leak rates less than 5 x 10-8 atm.cc/s of helium
Pin Out
Pi#1-Tristate Control
Pin #
2-Ground Case
Pin #
3-Output
Pin #
4-Vcc
All dimensions are typical unless otherwise specified.
Environmental
and
Mechanical