EURO
QUARTZ
Industry-standard hermetically-sealed package
Frequency Range 20kHz to 130MHz
Tristate (Enable/Disable) function as standard
Supply voltage range 1.8, 2.5, 3.3 or 5.0 Volts
XO44 Series Oscillators
11.4 x 9.6mm SMD HCMOS
DESCRIPTION
XO44 oscillators consist of a TTL/CMOS-compatible hybrid circuit
with a miniature quartz crystal packaged in a low-profile, industry-
standard package. The high quality design and materials employed
provide a highly reliable clock oscillator in a miniature package while
mass production methods ensure that the XO44 provides a cost-
effective oscillator solution.
SPECIFICATION
Supply Voltage:
Frequency Range
1.8V Supply:
2.5V Supply:
3.3V Supply:
5.0V Supply:
Output Logic:
Frequency Stability*
0° to +50°C:
0° to +70°C:
-40 to +85°C:
-55° to +105°C:
Rise/Fall Time:
Output Voltage:
HIGH ‘1’:
LOW ‘0’:
Output Load
CMOS:
TTL:
Duty Cycle:
Supply Current:
Operating Temperature
1.8, 2.5, 3.3 or 5.0 Volts ±5%
1.8MHz to 60.0MHz
1.8MHz to 60.0MHz
20.0kHz to 130.0MHz
20.0kHz to 125.0MHz
HCMOS/LSTTL
from ±10ppm
from ±15ppm
from ±25ppm
from ±100ppm
see table
90%Vdd minimum
10%Vdd maximum
15pF (50pF available)
10 LSTTL loads
50%±5% typical
See table
0~50°C (Light Commercial)
0~70°C (Commercial)
-40~+85 (Industrial)
-55~+105°C (Military)
-55~+105°C
5ms max.
10ms max.
(to reach 90% amplitude at 25±2°C)
±5ppm max. In first year
10ps typical
100ms max.
100ns max.
OUTLINE & DIMENSIONS
SOLDER TEMPERATURE PROFILE
Storage Temperature:
Startup Time
20kHz to 32MHz:
32MHz+ to 125MHz:
Ageing:
Phase Jitter RMS:
Enable Time:
Disable Time:
Tristate Function (Pad 1):
Output (Pad 3) is active if Pad 1 is not connected or a
voltage to Pad 1 is 'HIGH'. Output is high impedance
when 'LOW' or GROUND is applied to Pad 1.
* Frequency stability is inclusive of calibration tolerance at 25°C,
frequency change due to shock & vibration, ±10 supply voltage
variation and stability over temperature range.
PART NUMBERING
Example:
16.000MHz XO44050UCTA
CURRENT CONSUMPTION & RISE/FALL TIME
Frequency Range
20kHz to 32MHz
32MHz+ to 50MHz
40MHz+ to 125MHz
Supply Voltage (±10%)
+1.8V
8mA
10mA
25mA
+2.5V +3.3V +5.0V
10mA
14mA
30mA
15mA
25mA
16.5mA 35mA
35mA
40mA
Rise/Fall
Time
4ns max.
3ns max.
2ns max.
Frequency
Series Designation XO44
Stability*
100 = ±100ppm
050 = ±50ppm
025 = ±25ppm
Output Universal
Operating Temp. Range
C = Commercial
I = Industrial
M = Military
Tristate Function
Supply Voltage
Blank = 5.0 Volts
A = 3.3 Volts
B = 2.5 Volts
C = 1.8 Volts
* For other stability requirements enter figure required.
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 Email: info@euroquartz.co.uk www.euroquartz.co.uk
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