X O
VF261 Series
75 South Street, Hopkinton, MA 01748 800-982-5737 508-435-6831 Fax: 508-435-5289 www.valpeyfisher.com
70
VF261 Series
PECL Compatible
Crystal Clock Oscillator
F E AT U R E S
Wide Frequency Range
Very Low Phase Jitter
EMI Shielded
Tight Duty Cycle Available
Industrial Temperature Range
(40C to +85C) Available
Miniature Ceramic Package
Industry Standard Footprint
Complementary Output
Parameter
Symb
Condition
Min
Typ
Max
Unit
Note
Input Break
Vcc
0.5
7.0
V
Down Voltage
Storage Temp.
Ts
55
+125
C
Frequency F
15
300
MHz
Range
Frequency
F/F
Overall conditions
100
ppm
1
Stability
including:
calibration, temp.,
aging 10 yrs,
shock, vibration
Input Voltage
Vcc
4.75
5.00
5.25
V
PECL
3.15
3.30
3.45
LVPECL
Input Current
Icc
50 Ohm Load
60
mA
Load
Duty Cycle
@ 50% output
45
50
55
%
2
swing
Rise/Fall Time
Tr/Tf
20% to 80%
1.5
ns
Logic "1" Level
Voh
@Vcc = 5.0V
4.04
4.19
V
PECL
@Vcc = 3.3V
2.59
2.74
LVPECL
Logic "0" Level
Vol
@Vcc = 5.0V
3.15
3.25
V
PECL
@Vcc = 3.3V
1.45
1.55
LVPECL
Startup Time
Ts
2
10
ms
Phase Jitter
1
1
ps
fj>1KHz
Operating
Temperature Range
0C to +70C (40C to +85C available)
Mechanical Shock
Per MILSTD202, Method 213, Cond. E
Thermal Shock
Per MILSTD883, Method 1011, Cond. A
Vibration
Per MILSTD883, Method 2007, Cond. A
Soldering Conditions
260C, for 10s, Max or 230C, for 90s, Max.
Hermetic Seal
Leak rate less than 5 x 10
8
atm.cc/s of helium
Pin Out
Pin #1NC
Pin #4Output
Pin #2NC
Pin#5Complementary Output
Pin #3Ground, Case
Pin#6Vcc
50 Ohm to Vcc2V or Thevenin Equivalent, Bias Required
Absolute
Max. Ratings
Electrical
Environmental and Mechanical
Electrical
Connections
Creating a Part Number
VF261
FREQUENCY STABILITY
Code
Specification
S
20 ppm
A
25 ppm
B
50 ppm
100
ppm (std.)
OPERATIONAL TEMP. RANGE
Code
Specification
0
C to +70
C (std.)
1 -40
C to +85
C
DUTY CYCLE
Code
Specification
HH
2.5%
5% (std.)
INPUT VOLTAGE
Code
Specification
L 3.3
Volt
5.0
Volt
(std.)
FREQ.
Example: VF261AL-1-200MHz: Frequency Stability
25ppm,
Duty Cycle
5.0%, Input Voltage 3.3 Volt
5%, Operating
Temperature -45
C to +85
C, Frequency 200.000MHz.
0.303"
(7,7mm)
VF261
155.520MHz
BO1H
1
2
3
6
5
4
0.206"
(5,2mm)
0.200"
(5,08mm)
0.090"
(2,29mm)
0.045"
(1,143mm)
0.100"
(2,54mm)
0.050"
(1,27mm)
Notes:
1. Standard frequency stability (20, 25, 50, others available).
2. Tighter duty cycle available.
All specifications are subject to change without notice.
All dimensions are typical unless otherwise specified.
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