IQXO-331, -336 Commercial Oscillator
ISSUE 5 ; 4 JUNE 2004
Delivery Options
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Marking
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Please contact our sales office for current leadtimes
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Model number + Operating Temperature Code
(if applicable)
Frequency Stability Code
Frequency Tolerance Code (Optional)
Frequency
Date Code (Year/Week)
Output Compatibility
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ACMOS/TTL
Drive Capability: 50pF (70.0 to 110.0MHz)
15pF (>110.0 to 150.0MHz)
10TTL
Non tri-state (IQXO-336, -336I)
Tri-state (IQXO-331, 331I)
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Minimum Order Information Required
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Frequency + Model Number + Operating Temperature (if
applicable) + Frequency Stability
Package Outline
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14-pin DIL compatible resistance welded enclosure,
hermetically sealed with glass to metal seal. Available
over 0 to 70°C (IQXO-331, -336) or -40 to 85°C
(IQXO-331I, -336I)
LEADED SPXOs
Outline in mm
5.1 max
∅0.45
4.0 min
Pin connections
1. N/C or Enable/Disable
7. GND
8. Output
14. +Vs
1
7
7.62
14
15.24
21.0 max
8
t
f
t
r
13.08 max
2.4V
1.4V
0.4V
T
Duty cycle = t x 100(%)
T
0V
t
Standard Frequency Stabilities
0.8 max
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±25ppm, ±50ppm, ±100ppm
(over operating temperature range)
Operating Temperature Ranges
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0 to 70°C (IQXO-331, -336)
–40 to 85°C (IQXO-331I, -336I)
Storage Temperature Range
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–55 to 125°C
Environmental Specification
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Terminal Strength: 0.91kg max. Force perpendicular to
top & bottom
Hermetic Seal: not to exceed 1
x
10 mBar litres of
Helium leakage
-8
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Solderability: MIL-STD-202E, Method 208C
Vibration: 10 to 55Hz 0.76mm displacement, sweep 60
seconds, duration 2 hours
Rapid Change of Temperature over Operating
Temperature Range: 10 cycles
Shock: 981m/s
2
for 6ms, three shocks in each direction
along the three mutually perpendicular planes
Output Waveform - ACMOS/TTL
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+Vs
80%Vs
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Tri-state Operation (IQXO-331, -331I)
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50%Vs
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
Maximum ‘pull-down’ resistance required to disable
output = 20kΩ
20%Vs
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Electrical Specifications - maximum limiting values when measured in ACMOS test circuit.
Frequency
Range
70.0 to
< 90.0MHz
90.0 to
< 115.0MHz
115.0 to
150.0MHz
Ordering Example
Frequency
Model number: -331, -331I = Tri-state , -336, -336I = Non tri-state
Operating Temperature Code: I = -40 to 85°C Not applicable for 0 to 70°C
Frequency Stability: A = ±25ppm, B = ±50ppm, C = ±100ppm
Frequency
Stability
±25ppm, ±50ppm,
±100ppm
±25ppm, ±50ppm,
±100ppm
±25ppm, ±50ppm,
±100ppm
Supply Voltage
5V±0.25V
5V±0.25V
5V±0.25V
Supply Current
45mA
60mA
65mA
Rise Time(t
r
)
3ns
3ns
3ns
75.0MHz
Fall Time(t
f
)
3ns
3ns
3ns
IQXO-331I B
Duty Cycle
40/60%
40/60%
40/60%
Model Number
IQXO-331, -331I
-336, -336I
IQXO-331, -331I
-336, -336I
IQXO-331, -331I
-336, -336I
Test Circuit - ACMOS
A
Oscillator
1
7
14 8
500R
450R
+Vs
50Ω Input
10nF
V
10nF
Oscilloscope
Frequency counter
Note: Pin 1 = No connection on non tri-state models
LEADED SPXOs
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