VFH2321-VFH2324
VFH2421-VFH2424
XO Hi-REL, 1.8V
5x7mm SMD, HCMOS
Features
Leadless chip carrier package is hermetically
sealed for superior aging and field performance
Crystal angle controlled to
±0.5
minute for
excellent temperature stability
168 hour Class B burn-in and extensive
environmental testing for best performance in
rugged field environments
Guarantee start-up with a ramping DC supply
Start-up time <5ms, typical
Tristate option available
Calculated MTBF is 3.8x10
6
hours at 125°C
RoHS Status
Description
These high reliability oscillators provide HCMOS clock waveforms for applications subjected to the most stringent
environmental conditions. They are mechanically robust and weigh less than 0.2 grams. This 5x7 mm 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 3.8x10
6
at 125°C.
Electrical Specifications
Parameter
Frequency
Range
Frequency
Stability
Operating
Temperature
Range
Input Voltage
Input Current
Jitter RMS
Waveform
Symmetry
Rise / Fall
Time
Output Level
Input
Requirements
for Pin 1
Tr/Tf
“Zero” Level
“One” Level
90% V
DD
Symbol
F
Condition
Min
0.85
Typ
Max
165
75
3
1
Unit
MHz
Note
Vs. Operating Temperature
∆F/F
Aging 1
st
Year
After 1
st
Year
25
ppm
See
Chart
T
Vcc
Icc
850 KHz to 70 MHz, with 15pF load
70.1 to 165.0 MHz with 15pF load
Measured at 50% V
DD
850 KHz to 70 MHz
70.1 to 165.0 MHz
-55
1.7
1.8
7.0
15.0
+125
1.9
10.0
18.0
10
45/55
40/60
5
10% V
DD
C
V
mA
ps
%
ns
V
See
Chart
48/52
45/55
“1”: On-Pin 1 may float or 90% V
DD
min.
“0”: Tristate-Pin 1 requires 10% V
DD
75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-435-5289 • www.valpeyfisher.com • RevB1010
1
VFH2321-VFH2324
VFH2421-VFH2424
XO Hi-REL, 1.8V
5x7mm SMD, HCMOS
Environmental and Mechanical Conditions
Parameter
Storage
Temperature
Shock
Vibration
Humidity
Leak
Case
Pads
Resistance
to Solvents
Marking
Condition
-55°C to +150°C
1000 Gs, 0.35 ms, ½ sine wave, 3 shocks in each plane
10-2000 Hz of 0.06” d.a. or 20Gs, whichever is less
Resistant to 85° R.H. at 85°C
Per MIL-STD-883, Method 1014, Cond. A1 and Cond. C
Hermetically sealed ceramic LCC
15 microinch of gold over nickel
Per MIL-STD-202, Method 215
Epoxy ink or laser engraved
FIXED OUTPUT
Model
VFH2321
VFH2322
VFH2323
VFH2324
TRISTATE
Model
VFH2421
VFH2422
VFH2423
VFH2424
Operating
Temperature
-55C to +85C
-55C to +85C
-55C to +125C
-55C to +125C
Frequency
Stability
±25 ppm
±50 ppm
±75 ppm
±50 ppm
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
6. Gross Leak
MIL-STD-883 Method 1014, Cond C
7. Electrical Test at 25°C and temperature extremes, as follows:
A. Frequency
F. Duty Cycle
B. Current
G. Frequency at max V
DD
C. Rise Time
H. Frequency at min V
DD
D. Fall Time
I. “Zero” logic level
E. Duty Cycle
J. Tristate
Test Data on each unit is available for additional cost
Thermal Characteristics
Thermal Resistance
From Junction to Case, RØjc
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.
75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-435-5289 • www.valpeyfisher.com • RevB1010
2
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