INCH-POUND
MIL-PRF-55310/18D
8 July 2002
SUPERSEDING
MIL-PRF-55310/18C
25 March 1998
PERFORMANCE SPECIFICATION SHEET
OSCILLATOR, CRYSTAL CONTROLLED, TYPE 1 (CRYSTAL OSCILLATOR (XO)),
0.01 Hz THROUGH 15.0 MHz, HERMETIC SEAL, SQUARE WAVE, 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 and MIL-PRF-55310.
Pin number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Inches
.002
.018
.100
.150
.20
mm
0.05
0.46
2.54
3.81
5.1
Function
NC
NC
NC
NC
NC
NC
B - (GND/CASE)
OUTPUT
NC
NC
NC
NC
NC
B+
mm
6.9
7.62
11.2
13.7
22.53
Inches
.27
.300
.44
.54
.887
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.
4. All pins with NC function may be connected internally and are not to be used as external tie points or
connections.
FIGURE 1. Dimensions and configuration.
AMSC N/A
1 of 5
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
FSC 5955
MIL-PRF-55310/18D
REQUIREMENTS:
Interface and physical dimensions: See figure 1.
Mounting: See figure 1.
Terminals: See figure 1.
Seal: Hermetic in accordance with MIL-PRF-55310, maximum leakage rate 5 x 10 atm cc/s.
Weight: 0.5 ounce, maximum.
*
Oscillator: Class 2 (see 1.2.3 of 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.
Oscillator load: 10 kilohms
±5
percent shunted by 15 pF
±5
percent capacitor for CMOS compatible square.
Output waveform: Symmetrical square wave.
Output voltage: At designated CMOS load.
Logic 1: See table I.
Logic 0: See table I.
Rise and fall times: See table I.
Duty cycle: 40 to 60 percent duty cycle.
Supply voltage: See table I.
Input current: At designated supply voltage (see table I).
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.
Initial frequency-temperature accuracy (one-half temperature cycle): Verification applicable. 1/
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/
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
).
-8
2
TABLE I. Dash numbers and operating characteristics.
Dash
number
Output
frequency
range
Supply
voltage
±10%
Maximum
Input
current at
maximum
supply
voltage
1/
mA
25
25
20
20
15
15
10
10
3
3
Output voltage
Rise and
fall times
(max)
Initial
accuracy
ppm at
+23°C
±1°C
Frequency
aging
ppm/year
after
30 days
Frequency-temperature
tolerance (ppm)
Logic: 1
(min)
Logic: 0
(max)
-55°C
to
+125°C
A
±50
±100
±50
±100
±50
±100
±50
±100
±50
±100
-55°C
to
+105°C
B
±40
±80
±40
±80
±40
±80
±40
±80
±40
±80
-20°C
to
+70°C
C
±25
±50
±25
±50
±25
±50
±25
±50
±25
±50
01
02
11
12
21
22
31
32
41
42
0.01 Hz
to
15.0 MHz
0.01 Hz
to
12.0 MHz
0.01 Hz
to
10.0 MHz
0.01 Hz
to
8.0 MHz
0.01 Hz
to
5.0 MHz
V dc
+15
+15
+12
+12
+10
+10
+8
+8
+5
+5
V dc
12.8
12.8
10.2
10.2
8.5
8.5
6.8
6.8
4.2
4.2
V dc
1.5
1.5
1.2
1.2
1.0
1.0
0.8
0.8
0.5
0.5
ns
30
30
35
35
40
40
50
50
70
70
±15
±25
±15
±25
±15
±25
±15
±25
±15
±25
±5
±10
±5
±10
±5
±10
±5
±10
±5
±10
1/ Maximum input current for no load condition. Actual configuration of CMOS loads must be added to determine power supply
requirements.
MIL-PRF-55310/18D
Frequency-voltage tolerance:
±2
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 (see table I).
±5
ppm per year, maximum
±0.7
ppm per 30 days.
±1.5
ppm per 90 days
Terminal strength: Method 211 of MIL-STD-202, test condition C.
Applied force: 2 pounds each terminal for 10 seconds.
Bends: Five at 45 degrees each.
Frequency-environmental tolerance: Not applicable.
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.
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
M55310/18-
S
01
A
XXXXXXXX
±10
ppm per year, maximum
±1.5
ppm per 30 days
±3
ppm per 90 days
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
4
MIL-PRF-55310/18D
The margins of this specification sheet are marked with asterisks 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.
Custodians:
Army - CR
Navy - EC
Air Force - 11
Review activities:
Army - AR, MI, SM
Navy - AS, CG, MC
Air Force - 19, 99
NASA - NA
Preparing activity:
Army - CR
Agent:
DLA - CC
(Project 5955-0745-11)
5
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