Q-Tech QT78HCD User Manual

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 Function

1 Enable/disable
2 GND
3 Output
4 B+

Inches mm Ltr

A N/A .560 N/A 14.22
B N/A .360 N/A 9.14
C .195 .205 4.95 5.21
D .086 .114 2.18 2.90
E .025 .055 .635 1.40
F N/A .378 N/A 9.60
G .292 .308 7.42 7.82
H .007 .009 .178 .229
J N/A .188 N/A 4.78
K .015 .021 .381 .533

Min Max Min Max

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
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

, minimum.

DD

Logic 0: 10 percent of V

, maximum.

DD

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.

-8

atm cc/s.

2