INCH-POUND
MIL-PRF-55310/27D
15 October 2008
SUPERSEDING
MIL-PRF-55310/27C
09 June 2008
PERFORMANCE SPECIFICATION SHEET
OSCILLATOR, CRYSTAL CONTROLLED, TYPE 1 (CRYSTAL OSCILLATOR (XO)),
1.0 MHz THROUGH 85 MHz, HERMETIC SEAL, SQUARE WAVE, HIGH SPEED CMOS
This specification is approved for use by all Departments
and Agencies of the Department of Defense.
The requirements for acquiring the product described herein
shall consist of this specification sheet and
MIL-PRF-55310.
Pin number
1
2
3
4
Ltr
A
B
C
D
E
F
G
H
J
K
Min
N/A
N/A
.195
.086
.025
N/A
.292
.007
N/A
.015
Inches
Max
.560
.360
.205
.114
.055
.378
.308
.009
.188
.021
Min
N/A
N/A
4.95
2.18
.635
N/A
7.42
.178
N/A
.381
mm
Max
14.22
9.14
5.21
2.90
1.40
9.60
7.82
.229
4.78
.533
Function
Enable/disable
GND
Output
B+
NOTES:
1. Dimensions are in inches.
2. Metric equivalents are given for general information only.
3. Unless otherwise specified, tolerances are ±.005 (0.13 mm) for three place decimals and ±.02 (0.5 mm) for two
place decimals.
FIGURE 1. Dimensions and configuration.
AMSC N/A
FSC 5955
MIL-PRF-55310/27D
REQUIREMENTS:
Interface and physical dimensions: See figure 1.
Mounting: See figure 1.
Pads: See figure 1.
Seal: Hermetic in accordance with
MIL-PRF-55310,
maximum leakage rate 5 x 10
-8
atm cc/s.
Weight: 3 grams, maximum.
Oscillator: Class 2 or any class 1 or class 3 oscillator meeting all class 2 requirements and verification tests
specified herein and in
MIL-PRF-55310.
Calibration: Manufacturer calibrated.
Screening: In accordance with
MIL-PRF-55310,
product level B or S, as applicable.
Temperature:
Operating: See table I.
Storage: -62°C to +125°C.
Load test circuit: See figure 2.
Output waveform: Symmetrical square wave, HCMOS logic compatible (see figure 3).
Output logic voltage levels at designated HCMOS (see figure 3):
Logic 1: 90 percent of V
DD
, minimum.
Logic 0: 10 percent of V
DD
, maximum.
Rise and fall times: (See table I) Measurements shall be taken at the 10 percent and 90 percent peak-to -peak
output voltage levels, with peak-to-peak output defined as level 1-level 0 (see figure 3).
Duty cycle: See table I and figure 3.
Supply voltage: +5.0 V dc
±10
percent.
Input current: At designated supply voltage (see table I).
Enable/disable:
Output disabled (high impedance): Pin 1 input
≤
0.8 V dc.
Output active: Pin 1 input
≥
2.0 V dc or open.
Output frequency: Frequency as designated at time of acquisition (see table I).
Initial accuracy at reference temperature (up to 30 days after shipment): See table I.
2
MIL-PRF-55310/27D
TABLE I. Dash numbers and operating characteristics.
Dash
number
Output
frequency
range
Input
current
(max) 1/
Pulse characteristics
Rise and
fall times
(max) 2/
10 ns
10 ns
10 ns
10 ns
5 ns
5 ns
5 ns
5 ns
Duty cycle
min-max
2/
45% to 55%
45% to 55%
45% to 55%
45% to 55%
40% to 60%
40% to 60%
40% to 60%
40% to 60%
Initial
accuracy
at +23°C
±1°C
±15
ppm
±25
ppm
±15
ppm
±25
ppm
±15
ppm
±25
ppm
±15
ppm
±25
ppm
Frequency-temperature
tolerance (ppm)
-55°C
-55°C
-20°C
to
to
to
+125°C +105°C
+70°C
A
B
C
±50
±40
±25
ppm
ppm
ppm
±100
±80
±50
ppm
ppm
ppm
±50
±40
±25
ppm
ppm
ppm
±100
±80
±50
ppm
ppm
ppm
±50
±40
±25
ppm
ppm
ppm
±100
±80
±50
ppm
ppm
ppm
±50
±40
±25
ppm
ppm
ppm
±100
±80
±50
ppm
ppm
ppm
01
04
11
14
21
24
31
34
1.000 MHz to
14.999 MHz
1.000 MHz to
14.999 MHz
15.000 MHz to
29.999 MHz
15.000 MHz to
29.999 MHz
30.000 MHz to
59.999 MHz
30.000 MHz to
59.999 MHz
60.000 MHz to
85.000 MHz
60.000 MHz to
85.000 MHz
20 mA
20 mA
15 mA
15 mA
35 mA
35 mA
45 mA
45 mA
1/ Maximum input current for no load condition.
2/ See figure 3.
Frequency-temperature tolerance (one-half temperature cycle, referenced to frequency measured at +23°C
±1°C,
immediately prior to starting of the test): See table I. Measurements taken at ten equally spaced increments over
the specified operating temperature range. 1/
Frequency-voltage tolerance:
±4
ppm maximum for a
±10
percent change in supply voltage. Measurements taken
at reference temperature and operating temperature range end points.
Frequency aging: Measurements shall be taken at +70°C
±0.2°C
at intervals of not more than every 72 hours for
30 days minimum.
±10
ppm per year, maximum
±1.5
ppm per 30 days.
±3
ppm per 90 days.
Terminal strength:
Method 211 of MIL-STD-202,
test condition A.
Applied force: 8 ounces each terminal.
Frequency-environmental tolerance: Not applicable.
1/ For the purpose of transitioning this device to
MIL-PRF-55310,
‘Frequency stability versus temperature’ has been
renamed ‘Frequency-temperature tolerance’. The verification requirements of ‘initial frequency-temperature
accuracy (one-half temperature cycle)’ shall apply except that frequency measurements shall be referenced to the
frequency measured at +23°C
±1°C
(f
ref
) instead of to the nominal frequency (f
nom
).
3
MIL-PRF-55310/27D
NOTES:
1. For HCMOS: C
CL
= 15 pF
±5
percent.
2. For HCMOS: R
CL
= 10 kΩ
±5
percent.
3. C
CL
includes scope capacitance.
FIGURE 2. Load test circuit.
FIGURE 3. Waveform
4
MIL-PRF-55310/27D
Vibration, sinusoidal: In accordance with
MIL-PRF-55310
and
method 204 of MIL-STD-202.
Nonoperating: Test condition D.
Operating: Not required.
Ambient pressure:
Nonoperating: In accordance with
MIL-PRF-55310.
Operating:
Method 105 of MIL-STD-202,
test condition C.
Exposure time: 5 minutes.
Reflow soldering: Reflow soldering of the unit at +230°C
±10°C
for 15 seconds shall not degrade the performance.
Part or Identifying Number (PIN): Consists of “M” prefix followed by specification sheet number, a dash and coded
alphas, and numeric number. See example:
EXAMPLE
M55310/27-
S
01
A
XXXXXXXX
M prefix and specification sheet number
Product level (S, B, or C)
Dash number (see table I)
Operating temperature range
(A, B, or C) (see table I)
Frequency
Reference documents. In addition to
MIL-PRF-55310,
this document references the following:
MIL-STD-202
The margins of this specification are marked with vertical lines to indicate where changes from the previous issue
were made. This was done as a convenience only and the Government assumes no liability whatsoever for any
inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document
based on the entire content irrespective of the marginal notations and relationship to the last previous issue.
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