EURO
QUARTZ
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
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.
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
Supply Voltage: 1.8, 2.5, 3.3 or 5.0 Volts ±5%
Frequency Range
1.8V Supply: 1.8MHz to 60.0MHz
2.5V Supply: 1.8MHz to 60.0MHz
3.3V Supply: 20.0kHz to 130.0MHz
5.0V Supply: 20.0kHz to 125.0MHz
Output Logic: HCMOS/LSTTL
Frequency Stability*
0° to +50°C: from ±10ppm
0° to +70°C: from ±15ppm
-40 to +85°C: from ±25ppm
-55° to +105°C: from ±100ppm
Rise/Fall Time: see table
Output Voltage:
HIGH ‘1’: 90%Vdd minimum
LOW ‘0’: 10%Vdd maximum
Output Load
CMOS: 15pF (50pF available)
TTL: 10 LSTTL loads
Duty Cycle: 50%±5% typical
Supply Current: See table
Operating Temperature
0~50°C (Light Commercial)
0~70°C (Commercial)
-40~+85 (Industrial)
-55~+105°C (Military)
Storage Temperature: -55~+105°C
Startup Time
20kHz to 32MHz: 5ms max.
32MHz+ to 125MHz: 10ms max.
(to reach 90% amplitude at 25±2°C)
Ageing: ±5ppm max. In first year
Phase Jitter RMS: 10ps typical
Enable Time: 100ms max.
Disable Time: 100ns max.
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.
SPECIFICATION
Frequency Range Supply Voltage (±10%)
+1.8V
20kHz to 32MHz
32MHz+ to 50MHz
40MHz+ to 125MHz
8mA 10mA 15mA 25mA 4ns max.
10mA 14mA 16.5mA 35mA 3ns max.
25mA 30mA 35mA 40mA 2ns max.
CURRENT CONSUMPTION & RISE/FALL TIME
OUTLINE & DIMENSIONS
+2.5V +3.3V +5.0V Rise/Fall
Time
Example: 16.000MHz XO44050UCTA
PART NUMBERING
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.
SOLDER TEMPERATURE PROFILE
