INCH-POUND
MIL-PRF-55310/26C
19 November 2004
SUPERSEDING
MIL-PRF-55310/26B
8 July 2002
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.
Pin number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Function
NC
NC
NC
NC
NC
NC
GND/case
OUTPUT
NC
NC
NC
NC
NC
B+
Inches
.002
.018
.100
.150
.20
.27
.300
.44
.54
.887
Configuration A
FIGURE 1. Dimensions and configuration.
mm
0.05
0.46
2.54
3.81
5.1
6.9
7.62
11.2
13.7
22.53
AMSC N/A
FSC 5955
MIL-PRF-55310/26C
Pin number
1
7
8
14
Function
NC
GND/case
Output
B+
Inches
.002
.018
.150
.20
.27
.300
.515
.600
.815
mm
0.05
0.46
3.81
5.1
6.9
7.62
13.08
15.24
20.70
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.
2
MIL-PRF-55310/26C
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 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.
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.
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.
3
MIL-PRF-55310/26C
TABLE I. Dash numbers and operating characteristics.
Dash
number
Config-
uration
A
02
06
22
26
32
36
42
46
52
56
62
66
B
03
07
23
27
33
37
43
47
53
57
63
67
.01 MHz to
1.0 MHz
.01 MHz to
1.0 MHz
1 MHz to
4 MHz
1 MHz to
4 MHz
4 MHz to
20 MHz
4 MHz to
20 MHz
20 MHz to
35 MHz
20 MHz to
35 MHz
35 MHz to
50 MHz
35 MHz to
50 MHz
50 MHz to
65 MHz
50 MHz to
65 MHz
10 mA
10 mA
15 mA
15 mA
20 mA
20 mA
35 mA
35 mA
40 mA
40 mA
70 mA
70 mA
10 ns
10 ns
10 ns
10 ns
10 ns
10 ns
10 ns
10 ns
5 ns
5 ns
5 ns
5 ns
percent
45 to 55
45 to 55
45 to 55
45 to 55
40 to 60
40 to 60
40 to 60
40 to 60
40 to 60
40 to 60
40 to 60
40 to 60
ppm
±15
±25
±15
±25
±15
±25
±15
±25
±15
±25
±15
±25
ppm
±5
±10
±5
±10
±5
±10
±5
±10
±5
±10
±5
±10
Output
frequency
range
Input
current
(max) at
5.0 V
±10%
3/
Pulse characteristics
1/
Rise/fall
Duty
time
cycle
(max)
min-max
Initial
accuracy
at 23°C
±1°C
2/
Frequency
aging per
year (max)
4/
Initial frequency
temperature accuracy
-55°C
-55°C
-20°C
to
to
to
+125°C
+105°C
+70°C
A
B
C
ppm
ppm
ppm
±65
±55
±40
±100
±65
±100
±65
±100
±65
±100
±65
±100
±65
±100
±75
±55
±75
±55
±75
±55
±75
±55
±75
±55
±75
±50
±40
±50
±40
±50
±40
±50
±40
±50
±40
±50
1/
2/
3/
4/
See figure 3.
Up to 30 days following shipment see table II.
No load condition.
After 30 days following shipment, see table II.
TABLE II. Frequency aging limits.
Maximum change over 30 days
Projected maximum change
for 1 year after 30 days
1/ See table I.
5 ppm per year 1/
±0.7
ppm
±5.0
ppm
10 ppm per year 1/
±1.5
ppm
±10.0
ppm
4
MIL-PRF-55310/26C
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.
5
