EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 1460 230000 Fax: +44 1460 230001 email: info@euroquartz.co.uk web: www.euroquartz.co.uk
SURFACE-MOUNT OSCILLATORS
• Industry-standard 4 pad SMD package
• Wide frequency range, from 20kHz to 160MHz
• Wide operating temperature range, -40° to +85°C
• Supply Voltage 3.3 Volts or 5.0 Volts
• Open, ceramic package with hermetically sealed crystal
• Optional Tristate function
• Custom specifications produced and delivered quickly
XO44 SERIES SMD OSCILLATOR
OUTLINES AND DIMENSIONS
4 Pad SMD Package
STABILITY & PART NUMBER SELECTION
DESCRIPTION
The Euroquartz XO44 series of surface-mount oscillators consist of a TTL
and CMOS compatible hybrid circuit coupled with a slimline UM-1quartz
hermetically sealed crystal. The oscillators provide a true SMD part that
may be supplied in a short leadtime, even for custom frequencies.
FEATURES
SPECIFICATION
Input Voltage: +3.3 VDC +5.0VDC
Frequency Range: 20kHz ~ 125MHz 20kHz ~ 160MHz
Output Logic: TTL/HCMOS TTL/HCMOS
Output Voltage
TTL HIGH ‘1’: 2.4V min. 2.4V min.
HCMOS HIGH’1’: 2.97V min. Vcc -0.5V min.
TTL LOW ‘0’: 0.4V max. 0.4V max.
HCMOS LOW ‘0’: 0.33V max. 0.5V max.
Operating Temp. Range
Commercial: 0° to +70°C
Industrial: -40° to +85°C
Military: -55° to +125°C
Frequency Stability: see table
Output Load
TTL: 2 to 10TTL gates
HCMOS: 15pF (50pF available)
Rise/Fall Times
TTL 10ns max., 3ns typical (from 0.4V to 2.4V)
(RL=390Ω, CL=15pF)
HCMOS: 10ns max., 3ns typical
(from 10% to 90%Vdd, CL = 15pF)
Symmetry
TTL: 40% min. 60% max. (Measured at 1.4V)
HCMOS: 40% min. 60% max . (Measured at 50%Vdd)
Start-up Time: 10ms max, 5ms typical
Current Consumption: 15mA to 45mA (Frequency dependent)
Tristate Option: Output is high impedance when ‘0’ (<0.8V)
is applied to Pin 1. (Internal pull-up)
Disable time = 150ns max.
Storage Temperature: -55 to +125°C
Ageing: ±5ppm/year max.
Euroquartz
Model
Number
Stability
ppm
Operating
Temperature
Range
XO44025UC ±25 0°~+70°C 3.3/5.0V
XO44050UC ±50 0°~+70°C 3.3/5.0V
XO44100UC ±100 0°~+70°C 3.3/5.0V
XO44025UI ±25 -40°~+85°C 3.3/5.0V
XO44050UI ±50 -40°~+85°C 3.3/5.0V
XO44100UI ±100 -40°~+85°C 3.3/5.0V
Supply
Voltage
PART NUMBER GENERATION
XO44 Series oscillator part numbers are derived as follows:
EXAMPLE:
16.000MHz XO44050UCT3
Frequency -
Model No: -
(See table above)
Stability
025 = ±25ppm
050 = ±50ppm
100 = ±100ppm
U = CMOS/TTL o/p
Temperature Range
C = 0°~+70°C
I = -40°~+85°C
T = Tristate
Blank = 5.0 Volts Supply
3 = 3.3 Volts Supply
LOW FREQUENCY /LOW POWER
If you require Hz or kHz frequency oscillators with µA current
consumption, for example 32.768kHz with 14µA current consumption
consider our ‘LPO’ oscillator series.
CUSTOM PARTS
The Euroquartz factory are able to produce custom frequency and
specification specification XO44 series oscillators with short leadtimes.
Check with Euroquartz Sales for details.
