VFH2421-850K [CTS]
Oscillator,;
CTS 
VFH2321, thru VFH2324; VFH2421 thru VFH2424
HCMOS 1.8V; 850 KHz to 125 MHz
High Reliability Crystal Oscillator
High Reliability Product Specification
XO
Features
Description
These high reliability oscillators provide HCMOS clock
•
•
•
Leadless chip carrier package is hermetically sealed for
waveforms for applications subjected to the most stringent
environmental conditions. They are mechanically robust
and weigh less than 0.2 grams. This 5X7mm SMD
package has a hermetic seal, thus ensuring the integrity of
each oscillator. Each oscillator is burned-in at 125°C for
168 hours, temperature cycled and centrifuged then fully
tested in accordance with Table 1. Reliability tests are
performed per Table 2. The calculated MTBF is 3.8X106
hours at 125°C.
superior aging and field performance
Crystal angle controlled by +/-0.5 minutes for excellent
temperature stability
168 hour Class B burn-in and extensive environmental
testing for best performance in rugged field environments
Guaranteed start-up with a ramping DC supply
Start-up time less than 5 ms, typical
•
•
•
Low jitter of 6ps RMS max ensures stable data
transmission
•
•
Tristate option available
Calculated MTBF is 3.8 X 106 hours at 125°C
Connections
Non-Tristate Models
Tristate Models
VFH2321, 2322, 2323, 2324
VFH2421, 2422, 2423, 2424
Floating or “1”: Oscillator runs
Ground or “0”: Disable or Tristate
1.
Not Used
2.
3.
4.
Ground and Case
Output
VDD
Valpey Fisher Corporation • 75 South Street, Hopkinton, MA 01748 • Tel. 1-800-XTALREP, 508-435-6831 • FAX 508 4355289
1
VFH2321, thru VFH2324; VFH2421 thru VFH2424
HCMOS 1.8V; 850 KHz to 125 MHz
High Reliability Crystal Oscillator
ELECTRICAL SPECIFICATIONS
850 KHz to 165 MHz
Frequency Range
Frequency Stability Includes calibration at 25°C, operating temperature
change of input voltage, change of load, shock and vibration
MIN
TYP
MAX
1.9
UNITS
volts
pf
Input Voltage
Load
1.7
1.8
15
Input Current
850 KHz to 70 MHz, with 15pf load
70.1 to 165.0 MHz with 15pf load
Output Levels
7.0
10.0
18.0
mA
mA
15.0
“0” Level
10% VDD volts
volts
“1” Level
90% VDD
Rise and Fall Times
Jitter
5
ns
From positive edge to positive edge
Symmetry
10
ps RMS
850 KHz to 70MHz, @ 50% VDD
70.1 to 165.0 MHz, @ 50% VDD
Aging
48/52
45/55
45/55
40/60
percent
percent
First year
3
1
ppm
After first year
ppm/yr
Input Requirements for Pin 1:
“1”: On-Pin 1 may float or 90% VDD min.
“0”: Tristate-Pin 1 requires 10% VDD
ENVIRONMENTAL SPECIFICATIONS
(All Models)
Shock-1000 Gs, 0.35 ms, ½ sine wave, 3 shocks in each plane
Vibration-10-2000 Hz of .06” d.a. or 20Gs, whichever is less
Humidity-Resistant to 85° R.H. at 85°C
Storage Temperature-55° to +150°C
THERMAL CHARACTERISTICS
Thermal Resistance
From Junction to Case, Rθjc
16 °C/Watt
SURFACE MOUNT APPLICATION
These packages are designed for reflow soldering in accordance with
recommended profiles. For hand-soldering, the temperature of the iron
should not exceed 400°C for three seconds
Valpey Fisher Corporation • 75 South Street, Hopkinton, MA 01748 • Tel. 1-800-XTALREP, 508-435-6831 • FAX 508 4355289
2
VFH2321, thru VFH2324; VFH2421 thru VFH2424
HCMOS 1.8V; 850 KHz to 125 MHz
High Reliability Crystal Oscillator
Models
1.8V
Frequency
Stability
Temperature
Option
MECHANICAL SPECIFICATIONS
Leak- MIL STD 883, Method 1014, condition A1
Case- Hermetically sealed ceramic LCC
VFH2321
+/-25ppm
-55 to + 85°C
-55 to + 85°C
-55 to + 125°C
-55 to + 125°C
-55 to + 85°C
-55 to + 85°C
-55 to + 125°C
-55 to + 125°C
Non-Tristate
Non-Tristate
Non-Tristate
Non-Tristate
Tristate
VFH2322
VFH2323
VFH2324
VFH2421
VFH2422
VFH2423
VFH2424
+/-50ppm
+/-75ppm
+/-50ppm
+/-25ppm
+/-50ppm
+/-75ppm
+/-50ppm
Pads- 15 Microinch of gold over nickel
Marking- Expoxy ink or laser engraved
Resistance to Solvents- MIL STD 202, Method 215
Tristate
Tristate
Tristate
Table 1
Each unit undergoes the following:
1. Stabilization Bake
2. Temperature Cycling
3. Constant Acceleration
4. Burn-in
MIL-STD-883 Method 1008, Cond,.B
MIL-STD-883 Method 1010, Cond, B
MIL-STD-883 Method 2001, Cond, A
MIL-STD-883 Method 1015, Cond B
(125°C for 168 hours with bias)
5. Fine Leak
MIL-STD-883 Method 1014, Cond. A1
MIL-STD-883 Method 1014, Cond C
6. Gross Leak
7. Electrical Test at 25°C and temperature extremes, as follows:
A. Frequency
B. Current
F. Frequency at max VDD
G. Frequency at min VDD
H. “Zero” logic level
I. “One” logic level
J. Tristate
C. Rise Time
D. Fall Time
E. Duty Cycle
Test Data on each unit is available for additional cost
Valpey Fisher Corporation • 75 South Street, Hopkinton, MA 01748 • Tel. 1-800-XTALREP, 508-435-6831 • FAX 508 4355289
3
VFH2321, thru VFH2324; VFH2421 thru VFH2424
HCMOS 1.8V; 850 KHz to 125 MHz
High Reliability Crystal Oscillator
TABLE 2- RELIABILITY TEST PROCEDURE AND CONDITIONS FOR
QUARTZ CRYSTAL OSCILLATORS
1.
Group A
MARKING SPECIFICATION
The format for the marking is:
Electrical Characteristics at -55°, 25° and 125° ( 85° for VFH2121, VFH2122, VFH2221
and VFH2221))
Frequency @ 1.7, 1.8 and 1.9 volts (units)
Symmetry (Duty Cycle)
Input current
Valpey-Fisher Model Number (XX)
Hi-Rel Oscillator
Date Code (YY)
Zero/One levels
Rise/Fall times
Physical Dimensions
VFHXXYY
44.736
Length/width
Height
Seal (Visual)
Package finish (Corrosion, discoloration, etc.)
Marking placement/legibility
II. Group B- Life Test
1000 hrs aging at or above 125°C. 1.8V VDC, with proper load
Frequency
Pin 1
(In MHz)
III.
Group C- All units have passed Group A testing
A. Subgroup 1-8 pcs.
Standard
Condition
Method 2002
COND.B
Description
Mechanical Shock
1500 g’s, 5ms
5 drops, 6 axis
Vibration, var.
freq. 20 g’s,
End point measurement
Frequency
MIL-STD-883
HOW TO ORDER
Output Waveform
For Part Number, put model type before model number, and
add frequency in MHz, for example:
MIL-STD-883
Method 2007
COND. A.
Frequency
Output waveform
.06” disp., 20-
20, 000-20 Hz
Solderability
VFH
2421 - 40M
MIL-STD-883
Method 2003
Visual 95% coverage
B. Subgroup 2-4 pcs (One-half of Subgroup 1)
VFH is Model Type
40 M Frequency in MHz
MIL-STD-883
Method 1011
COND. B
Thermal Shock
Liq. To liq.
Frequency
2421 is Model Number
Output waveform
15 cycles
MIL-STD-202
MIL-STD-883
Method 105
COND. B
Altitude, 3.44
inch Hg. 12 hrs
Moisture resist.
Frequency
Output waveform
Frequency
Method 1004
With 5 OR 3.3V applied
25-65°C, 90 to
100% RH, 10 cycles
Resistance to
Output waveform
MIL-STD-202
Method 210
COND.A
Frequency
Solder Heat
Output waveform
Immersion @350°C
3.5 sec
C.Subgroups 3-4 pcs. (One half of Subgroup 1)
Standard
Condition
Storage Temp.
No. Oper
Description
24 hrs. @ -55°C
24 hrs. @ 125°C
Salt Atmosphere
24 hrs. @ 35°C
.5-3.0% Solution
Fine Leak
End point measurement
Frequency
Output waveform
Frequency
MIL-STD-883
Method 1009
COND. A
Output waveform
Visual
MIL-STD-883
MIL-STD-883
Method 1014
COND. B
Qs <5 X10-8
Method 1014
COND. C
Gross Leak
Visual in 125°C
Detector fluid
Valpey Fisher Corporation • 75 South Street, Hopkinton, MA 01748 • Tel. 1-800-XTALREP, 508-435-6831 • FAX 508 4355289
4
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