EURO
QUARTZ
FEATURES
High temperature operation up to 200°C
Excellent temperature stability
Fast start-up
High shock resistance
Low EMI emission
Hermetically sealed package
HIGH TEMPERATURE OSCILLATORS
CXOHT
CXOMHT
CXOXHT
High Temperature/High Shock SMD Crystal Oscillator
300kHz ~ 50MHz
300kHz ~ 50MHz
1MHz ~ 50MHz
DESCRIPTION
For applications with high operating temperatures oscillators types
CXOHT, CXOMHT and CXOXHT will operate at temperatures as high
as 200°C with a stability of 200ppm at this temperature.
OUTLINE & DIMENSIONS
SPECIFICATION
Specifications are typical at 25°C unless otherwise indicated. Tighter
specifications are available, contact Euroquartz technical sales.
Supply Voltage:
+3.3 or +5.0 Volts ±10%
Calibration Tolerance:
±50ppm or tighter as reqd.
Frequency Stability
25° ~ +150°C: ±100ppm
25° ~ +175°C: ±150ppm
25° ~ +200°C: ±200ppm
Supply Current (Typical)
+3.3V
+5.0V
24MHz:
3.0mA
8.0mA
32MHz:
5.0mA
10.0mA
50MHz:
6.0mA
14.0mA
Output Load:
15pF
Start-up Time:
5ms maximum
Rise and Fall Time:
6ns maximum
Duty Cycle:
60/40%
Shock Survival
Std:
Up to 3,000g, 0.3ms, ½ sine
HG:
Up to 10,000g, 0.3ms, ½ sine
Vibration Survival:
20g, 10~2000Hz swept sine
Operating Temp. Range:
-55°C to 200°C
COMPARISON OF ENABLE/DISABLE OPTIONS
Option 'E'
Option 'T'
When enabled (PIN 1 is high'*)
Output
Oscillator
Current Consumption:
When disabled (PIN 1 'low')
Output
Oscillator
Current Consumption:
When re-enabled
(PIN 1 from low to high)
Output recovery
Freq. Output
Oscillates
Normal
High 'Z' state
Stops
Very low
Freq. Output
Oscillates
Normal
High 'Z' state
Oscillates
Lower than normal
Delayed
Immediate
PACKAGING OPTIONS
High temperature oscillators are available either tray packed
(<250pcs) or tape and reel (>250 pieces).
16mm tape, 178mm or 330mm reels (EIA 418).
* When Pin 1 is allowed to float it is held 'high' by an internal pull-up
resistor.
Option 'N' = Pin 1 not connected internally.
HOW TO ORDER HIGH TEMPERATURE OSCILLATORS
CXOHT
Package Type
CXOHT
CXOMHT
CXOXHT
3
Supply Voltage
4 = 3.3V
5 = 5.0V
S
Blank
= standard
S = special
or custom
HG
E
SM3
-
20.0M,
Frequency
K = kHz
M = MHz
– /
Calibration
Tolerance
at 25°C
–
Frequency
Stability
over
temperature
range
(±ppm)
/ 200
Total
Frequency
Tolerance
(±ppm)
/
H
Enable/Disable
option, E, T or N
Shock Level
Blank =
standard
HG =
high shock
Terminations
Blank = SM1
=Gold plated
SM3 = Solder dipped
SM5 = Solder dipped
(SM1 and SM5 are pB free)
Temp. Range
H = 25° to 200°C
S = customer
specified temp.
range
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 info@euroquartz.co.uk www.euroquartz.co.uk
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