IQXO-35, -36 Industrial Oscillator
ISSUE 5; 19 OCTOBER 1999
Delivery Options
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Tri-state Operation (IQXO-36)
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Please contact our sales office for current leadtimes
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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 enables oscillator
output
Maximum ‘pull-down’ resistance required to disable
output = 20kΩ
Disable current 50µA typical
Output Compatibility
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HCMOS/TTL
Drive Capability: 50pF or 10TTL
Non tri-state (IQXO-35)
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Tri-state (IQXO-36)
Marking
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Package Outline
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Model number
Frequency Stability Code
Frequency Tolerance Code (Optional)
Frequency
Date Code (Year/Week)
8-pin DIL compatible resistance welded enclosure,
hermetically sealed with glass to metal seals and high
environmental performance
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Standard Frequency Stabilities
LEADED SPXOs
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±25ppm, ±50ppm, ±100ppm
(over operating temperature range)
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Frequency Tolerance @ 25°C (Optional)
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Minimum Order Information Required
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±5ppm, ±10ppm, ±25ppm
Frequency + Model Number + Frequency Stability
Operating Temperature Range
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Outline in mm
0.8 max
5.8 max
t
r
13.20
8
5
7.62SQ
t
f
4.0 min
13.20
Pin connections
1. N/C or Enable/Disable.
4. GND
5. Output
8. +Vs
1
4
–40 to 85°C
11.8
Storage Temperature Range
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–55 to 125°C
Environmental Specification
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∅0.5
Acceleration: 490m/s
2
for 1 minute in the ‘Y
1
’ plane
Bump: 4000 bumps at 390m/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 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
Solderability: BS2011 test TA
Rapid Change of Temperature
Temperature Range: 10 cycles.
over
Operating
50%Vs
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Output Waveform - HCMOS/TTL
+Vs
90%Vs
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Vibration: 10 to 60Hz 0.75mm displacement, 60 to 2000Hz
98.1m/s
2
acceleration, 30 minutes in each of three
mutually perpendicular planes
2.4V
10%Vs
1.4V
0.4V
T
Duty cycle = t x 100(%)
T
0V
t
Electrical Specifications - maximum limiting values when measured in HCMOS test circuit.
Frequency
Range
500.0kHz to
< 5.0MHz
5.0 to
< 16.0MHz
16.0 to
< 30.0MHz
30.0 to
< 50.0MHz
50.0 to
70.0MHz
Ordering Example
Frequency
Model number -35 = Non tri-state, -36 = Tri-state
Frequency Stability: A = ±25ppm, B = ±50ppm, C = ±100ppm
LEADED SPXOs
Frequency
Stability
±25ppm, ±50ppm,
±100ppm
±25ppm, ±50ppm,
±100ppm
±25ppm, ±50ppm,
±100ppm
±25ppm, ±50ppm,
±100ppm
±25ppm, ±50ppm,
±100ppm
Supply Voltage
5V±0.25V
5V±0.25V
5V±0.25V
5V±0.25V
5V±0.25V
Supply Current
20mA
20mA
30mA
40mA
50mA
Rise Time(t
r
)
15ns
10ns
10ns
8ns
6ns
22.0MHz
Fall Time(t
f
)
15ns
10ns
10ns
8ns
6ns
IQXO-35
B F
Duty Cycle
45/55%
45/55%
45/55%
45/55%
40/60%
Model Number
IQXO-35, -36
IQXO-35, -36
IQXO-35, -36
IQXO-35, -36
IQXO-35, -36
Frequency Tolerance @ 25°C: D = ±5ppm; E = ±10ppm; F = ±25ppm
Please note: Code combination A F is not available
Test Circuit - HCMOS
Oscillator
14
8 5
A
+Vs
Test Circuit - TTL
A
Oscillator
1 4
85
+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
PCB Design
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