CLOCK
OSCILLA
TORS
IQD Frequency Products Ltd, Station Road, Crewkerne, Somerset TA18 8AR, United Kingdom
Tel: +44 (1460) 270200; Fax: +44 (1460) 72578;
Email: info@iqdfrequencyproducts.com Web: www.iqdfrequencyproducts.com
IQXO-331, -336 CLOCK OSCILLATORS
ISSUE 9; 3 APRIL 2009 - RoHS 2002/95/EC
Description
ACMOS/TTL 14-pin DIL compatible resistance welded
enclosure, hermetically sealed with glass to metal seal
Package Outline
14-pin DIL
Frequency Range
70MHz to 150MHz
Output Compatibility & Load
ACMOS/TTL
Drive Capability:
50pF max (70.0 to 110.0MHz)
15pF max (>110.0 to 150.0MHz)
10TTL
Non tri-state (IQXO-336, -336I)
Tri-state (IQXO-331, 331I)
Frequency Stabilities
±25ppm, ±50ppm, ±100ppm (over operating temperature
range)
Operating Temperature Ranges
0 to 70°C (IQXO-331, -336)
–40 to 85°C (IQXO-331I, -336I)
Storage Temperature Range
–55 to 125°C
Tri-state Operation (IQXO-331, -331I)
No connection or Logic ‘1’ to pin 1 enables oscillator output
Logic ‘0’ to pin 1 disables oscillator output; when disabled the
oscillator output goes to the high impedance state
Maximum ‘pull-down’ resistance required to disable output
= 20k
Environmental Specification
Terminal Strength: 0.91kg max force perpendicular to top &
bottom
Hermetic Seal: not to exceed 1 x 10
-8
mBar litres of Helium
leakage
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
Marking Includes
IQD + Model Number + Operating Temperature Code
(if applicable) + Frequency Stability Code + Frequency
Tolerance Code (Optional) + Frequency + Date Code
Packaging
Bulk
Minimum Order Information Required
Frequency + Model Number + Operating Temperature
(if applicable) + Frequency Stability
Outline (mm)
5.1
max
4.0
min
0.8
max
0.45
7.62
13.08
max
15.24
21.0 max
1
7
14
8
Pin connections
1. N/C or Enable/Disable
7. GND
8. Output
14. +Vs
Output Waveform
tr
tf
t
T
80%Vs
20%Vs
50%Vs
0V
+Vs
2.4V
0.4V
Duty cycle = t x 100(%)
T
1.4V
Test Circuit
+Vs
A
V
Oscilloscope
Frequency counter
10nF
Oscillator
1
7
14 8
10nF
500R
450R
50 Input
Note: Pin 1 = No connection on non tri-state models