AMSC N/A
1 of 7
FSC 5955
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
INCH-POUND
MIL-PRF-55310/26B
8 July 2002
SUPERSEDING
MIL-PRF-55310/26A
25 March 1998
PERFORMANCE SPECIFICATION SHEET
OSCILLATOR, CRYSTAL CONTROLLED, TYPE 1 (CRYSTAL OSCILLATOR (XO)),
10 kHz THROUGH 65 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 and MIL-PRF-55310.
Configuration A
FIGURE 1. Dimensions and configuration.
Inches mm
.002
0.05
.018
0.46
.100
2.54
.150
3.81
.20
5.1
.27
6.9
.300
7.62
.44
11.2
.54
13.7
.887
22.53
Pin number
Function
1 NC
2 NC
3 NC
4 NC
5 NC
6 NC
7 GND/case
8 OUTPUT
9 NC
10 NC
11 NC
12 NC
13 NC
14 B+
MIL-PRF-55310/26B
2
Configuration 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.
4. All pins with the NC function may be connected internally and are not to be used as external tie points or
connections.
FIGURE 1. Dimensions and configurations - Continued.
Pin number
Function
1 NC
7 GND/case
8 Output
14 B+
Inches mm
.002
0.05
.018
0.46
.150
3.81
.20 5.1
.27 6.9
.300
7.62
.515
13.08
.600
15.24
.815
20.70
MIL-PRF-55310/26B
3
REQUIREMENTS:
Interface and physical dimensions: See figure 1.
Package configuration: See figure 1.
Terminals: See figure 1.
Weight: 0.5 ounces (14.2 grams-mass), 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.
Load test circuit: See figure 2.
Seal: Hermetic in accordance with MIL-PRF-55310, maximum leakage rate 5 x 10
-8
atm cc/s.
* Supply voltage (B+): 5.0 V dc
10 percent.
Overvoltage survivability: In accordance with MIL-PRF-55310.
Supply current: At designated supply voltage (see table I).
Start-up time: 15 milliseconds maximum, measurement shall be taken at reference temperature and operating
temperature range endpoints.
Nominal output frequency: Frequency as designated at time of acquisition (see table I).
Output logic voltage levels at designated HCMOS load: See figure 3.
Logic 1: 90 percent of V
DD
, minimum.
Logic 0: 10 percent of V
DD
, maximum.
Output waveform: Symmetrical square wave, HCMOS logic compatible (see figure 3).
Duty cycle: See table I and figure 3.
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 Logic 1 - Logic 0 (see figure 3).
Initial accuracy at reference temperature: See table I.
Initial frequency-temperature accuracy (1/2 temperature cycle): See table I. Measurements shall be taken at ten
equally spaced increments over the specified operating temperature range.
MIL-PRF-55310/26B
4
*
TABLE I. Dash numbers and operating characteristics.
1/ See figure 3.
2/ Up to 30 days following shipment, see table II.
3/ No load condition.
4/ After 30 days following shipment, see table II.
TABLE II. Frequency aging limits.
1/ See table I.
Frequency-voltage tolerance
2 ppm maximum for a
10 percent change in supply voltage. Measurements shall
be taken at reference temperature and operating temperature range endpoints.
Dash
number
Output
frequency
Input
current
Pulse characteristics
1/
Initial
accuracy
Frequency
aging per
Initial frequency
temperature accuracy
Config-
uration
range (max)
at
5.0 V
10% 3/
Rise/fall
time
(max)
Duty
cycle
min-max
at 23
C
1
C
2/
year (max)
4/
-55
C
to
+125
C
-55
C
to
+105
C
-20
C
to
+70
C
A
B
A
B
C
percent ppm ppm ppm ppm ppm
02 03 .01
MHz
to
1.0 MHz
10 mA
10 ns
45 to 55
15
5
65
55
40
06 07 .01
MHz
to
1.0 MHz
10 mA
10 ns
45 to 55
25
10
100
75
50
22 23 1
MHz
to
4 MHz
15 mA
10 ns
45 to 55
15
5
65
55
40
26 27 1
MHz
to
4 MHz
15 mA
10 ns
45 to 55
25
10
100
75
50
32 33 4
MHz
to
20 MHz
20 mA
10 ns
40 to 60
15
5
65
55
40
36 37 4
MHz
to
20 MHz
20 mA
10 ns
40 to 60
25
10
100
75
50
42 43 20
MHz
to
35 MHz
35 mA
10 ns
40 to 60
15
5
65
55
40
46 47 20
MHz
to
35 MHz
35 mA
10 ns
40 to 60
25
10
100
75
50
52 53 35
MHz
to
50 MHz
40 mA
5 ns
40 to 60
15
5
65
55
40
56 57 35
MHz
to
50 MHz
40 mA
5 ns
40 to 60
25
10
100
75
50
62 63 50
MHz
to
65 MHz
70 mA
5 ns
40 to 60
15
5
65
55
40
66 67 50
MHz
to
65 MHz
70 mA
5 ns
40 to 60
25
10
100
75
50
5 ppm per year 1/
10 ppm per year 1/
Maximum change over 30 days
0.7 ppm
1.5 ppm
Projected maximum change
for 1 year after 30 days
5.0 ppm
10.0 ppm
MIL-PRF-55310/26B
5
NOTES:
1. For HCMOS: C
CL
= 15 pF
5 percent.
2. For HCMOS: R
CL
= 10 k
5 percent.
3. C
CL
includes scope capacitance.
FIGURE 2. Load test circuit.
FIGURE 3. Waveform.
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