Q-Tech QT78HCD - Manual (Page 2)

MIL-PRF-55310/27D
2
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.