IQXO-625, -626, -627, -628 Military Oscillator
ISSUE 4; 8 JULY 1999
Delivery Options
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Solderability: test IEC 60068-TA
Vibration: 10 to 60Hz 0.75mm displacement, 60 to 2000Hz
98.1m/s
2
acceleration, 30 minutes in each of three
mutually perpendicular planes
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Please contact our sales office for current leadtimes
Output Compatibility
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HCMOS/TTL
Drive Capability: 50pF or 10TTL
Non tri-state (IQXO-625, -626)
Tri-state (IQXO-627, -628)
Tri-state Operation (IQXO-627, -628)
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Logic ‘0’ to pin 1 disables oscillator output; when
disabled the oscillator output goes to the high
impedance state
No connection or Logic ‘1’ to pin 1 enables oscillator
output
Disable current 50µA typical
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Package Outline
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14-pin DIL compatible resistance welded enclosure,
hermetically sealed with glass to metal seals and gold
plated pins and bases. Available non-screened
(IQXO-625, -627) and fully screened (IQXO-626, -628)
Marking
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Model number
Frequency Stability Code
Frequency Tolerance Code (Optional)
Frequency
Date Code (Year/Week)
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LEADED SPXOs
Standard Frequency Stabilities
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±50ppm, ±100ppm
(inclusive of supply voltage variations over the operating
temperature range)
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Frequency Tolerance @ 25°C (Optional)
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Minimum Order Information Required
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±10ppm, ±25ppm
Frequency + Model Number + Frequency Stability
Operating Temperature Range
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–55 to 125°C
Storage Temperature Range
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–55 to 125°C
Outline in mm
5.1 max
∅0.45
4.0 min
Pin connections
1. N/C
7. GND
8. Output
14. +Vs
1
7
7.62
14
15.24
8
21.0 max
13.08 max
Screening On Each Device (IQXO-626, -628)
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Acceleration: 49000m/s
2
for 1 minute in the ‘Y
1
’ plane
0.8 max
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High Temperature Storage: 24hrs at 150°C
Rapid Change of Temperature: -55 to 125°C,
10 cycles
Dynamic burn-in for 168hrs at 125°C
Check all parameters & assess
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Environmental Specification
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Bump: 4000 bumps at 391m/s
2
in each of the three
mutually perpendicular planes
Hermetic Seal: not to exceed 1
x
10
-8
mBar litres of
Helium leakage
Humidity: steady state: in accordance with test Ca of
IEC 60068-2-3, for 56 days at 40°C at a relative humidity
of 93%, cyclic: in accordance with test Db variant 1 of
IEC 60068-2-30, at severity b), 55°C for six cycles
Shock: 981m/s
2
for 6ms, three shocks in each direction
along the three mutually perpendicular planes
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Electrical Specifications - maximum limiting values when measured in HCMOS test circuit.
Frequency
Range
250.0kHz to
< 8.0MHz
8.0 to
< 23.0MHz
23.0 to
< 48.0MHz
48.0 to
72.0MHz
Ordering Example
Frequency
Model number -625,-626 = Non tri-state, -627,-628 = Tri-state
Frequency Stability: B = ±50ppm, C = ±100ppm
Frequency Tolerance @ 25°C: E = ±10ppm; F = ±25ppm
Please note: Code combination B F is not available
LEADED SPXOs
Frequency
Stability
±50ppm, ±100ppm
±50ppm, ±100ppm
±50ppm, ±100ppm
±50ppm, ±100ppm
Supply Voltage
5V±0.5V
5V±0.5V
5V±0.5V
5V±0.5V
Supply Current
5mA
10mA
50mA
65mA
Rise Time(t
r
)
10ns
5ns
5ns
3ns
50.0MHz
Fall Time(t
f
)
10ns
5ns
5ns
3ns
IQXO-625 B E
Duty Cycle
45/55%
40/60%
40/60%
40/60%
Model Number
IQXO-625, -626,
-627, -628
IQXO-625, -626,
-627, -628
IQXO-625, -626,
-627, -628
IQXO-625, -626,
-627, -628
Output Waveform - HCMOS/TTL
+Vs
90%Vs
t
f
t
r
50%Vs
2.4V
1.4V
0.4V
T
Duty cycle = t x 100(%)
T
0V
t
10%Vs
Test Circuit - HCMOS
A
Oscillator
7
1
14 8
+Vs
Test Circuit - TTL
A
Oscillator
1
7
14 8
+Vs
D
1
400R
D
2
V
0.1µF 15pF*
Oscilloscope
V
0.1µF
15pF*
D
3
D
4
Oscilloscope
Frequency counter
*Inclusive of jigging & equipment capacitance
Note: Pin 1 = no connection on non tri-state models
Frequency counter
D
1
to D
4
= IN916
or equivalent
*Inclusive of jigging & equipment capacitance
Note: Pin 1 = No connection on non tri-state models
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