Data Sheet

EURO QUARTZ
XO21 Series Oscillators
2.0 x 1.6 x 0.75mm SMD HCMOS
2.5MHz to 50MHz
FEATURES
Page
1 of 2
Ultra-small SMD seam sealed clock crystal oscillator unit
Frequency Range 2.5MHz to 50MHz
Tristate (Enable/Disable) function as standard
Supply voltage 1.8, 2.5 or 3.3 Volts
DESCRIPTION
OUTLINE & DIMENSIONS
XO21 ultra-small clock oscillators consist of a TTL/CMOS-compatible
hybrid circuit and a miniature quartz crystal packaged in a lowprofile, industry-standard ceramic package. XO21 oscillators are fully
specified clocks with low mass and a very small footprint.
SUPPLY VOLTAGE-DEPENDENT PARAMETERS
Supply
+1.8VDC±5% +2.5VDC±5% +3.3VDC±5%
Voltage
Code = 'C'
Code = 'B'
Code = 'A'
Frequency
2.5MHz~
2.5MHz~
2.5MHz~
Range
50MHz
50MHz
50MHz
Logic HIGH '1'
1.62V min.
2.25V min.
2.97V min.
(90%Vdd min.)
Logic LOW '0'
0.18V max.
0.25V max.
0.33V max.
(90% Vdd max.)
Current
5mA max.
5mA max.
8mA max.
Consumption
Rise Time/
5ns max.
5ns max.
5ns max.
Fall Time
3ns typ.
3ns typ.
3ns typ.
SPECIFICATION
Supply Voltage:
Output Logic:
Frequency Stability:
Rise/Fall Time:
Output Load
Duty Cycle:
Supply Current:
Operating Temperature
Commercial:
Industrial:
Storage Temperature:
Start-up Time:
Ageing:
Tristate Function (Pad 1):
Packaging:
1.8, 2.5 or 3.3Volts ±5%,
HCMOS/LSTTL
15pF (
50%±10% [50%±5% also available]
ENVIRONMENTAL PERFORMANCE SPECIFICATION
-10° to +70°C
-40° to +85°C
-50° to +100°C
10ms max.
±3ppm max.
Enable/Disable function is standard for
XO21. Output (Pad 3) is active if Pad 1
not connected or Pad 1 is 'HIGH'.
Output high impedance when 'LOW'
or GROUND is applied to Pad 1.
8mm tape, 180mm reel,
1k or 2k pieces per reel
RoHS Status:
Storage Temperature Range:
Humidity:
Hermetic Seal:
Solderability:
Reflow:
Vibration:
Shock:
Compliant
-55° to +105°C
85% RH, 85°C for 48 hours
Leak rate 2x10-8 ATM -cm3/s max.
MIL-STD-202F Method 208E
260°C for 10 sec (see diagram)
MIL-STD-202F Method 204,
35±5 mins, 50 to 2000Hz
MIL-STD-202F Method 213B, test
Condition E, 50g 11ms.
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 [email protected] www.euroquartz.co.uk
EURO QUARTZ
XO21 Series Oscillators
2.0 x 1.6 x 0.75mm SMD HCMOS
2.5MHz to 50MHz
Page
2 of 2
SOLDER TEMPERATURE PROFILE
PART NUMBERING
Example:
20.000MHz XO21050UCTA
Frequency
Series Designation XO21
Temperature Stability*
100 = ±100ppm
050 = ±50ppm
025 = ±25ppm
Output CMOS/LSTTL
Operating Temp. Range
C = Commercial -10° to +70°C
I = Industrial -40° to +85°C
Tristate Function
Supply Voltage
A = 3.3 Volts
B = 2.5 Volts
C = 1.8 Volts
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 [email protected] www.euroquartz.co.uk
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