CRYSTAL OSCILLATOR - XO
QEN 49/55-BH/CH
FULL MILITARY DIL XO
These high performance DIL clock oscillators are designed for high vibration
and extended temperature range up to -55° C to +125° C.
The QEN55-BH/CH utilize HCMOS active circuit technology up to 40 MHz and
an ACMOS technology up to 70 MHz. The crystal resonator is mounted on
3 points on a true hybrid alumina substrate with gold printed circuit path
and is well suited for military and avionics applications. The same perfor-
mances are presented for higher environmental severity in a 14 pins DIL
package under the designation QEN49-BH/CH.
In the overlapping range between 14 MHz and 40 MHz, the choice depends
on the other available options such as duty cycle tolerance and the tristate
output.
Frequency range
3.5 KHz to 70 MHz
Applications
Test equipment
Military airborne
Space applications
Features
Temperature ranges:
up to -55° C to +125° C
Frequency stability:
±25 to ±100 ppm
Supply voltage:
+5 V
Current consumption:
10 to 50 mA
Load (BH version):
25pF/3TTL-gates
Load (CH version):
15pF-25pF/10TTL-gates
Option duty cycle:
(BH version up to 14 MHz):
50/50 ± 5 %
(BH/CH version from 14 MHz):
50/50 ± 10 %
Option
Enable/Disable: Up to 14 MHz:
Version BH
Option tristate output:
Version CH
Option external trimmer:
3 to 20 pF
up to 30 MHz on pin 1
Option screening:
B or S
Ageing (45°C/1
st
year) :
≤
± 5 ppm
Minimum ordering information requirement
(See
Table 1
for available combinations)
(See page
3-19
for package drawing)
Example: QEN 55 - BHR 16 MHz AY50 SB / T
/
Package
55 = DIL 4 pins
49 = DIL 14 pins
Option
R = 50/50 ± 10 % (or ± 5 %)
I = enable/disable
*
J = tristate
*
T = trimmer
*
Temperature range
DT = -40° C ~ +85° C
•
AY = -55° C ~ +125° C
∞
Frequency stability
± 25 ppm
∞
± 50 ppm
± 100 ppm
Screening option:
SB / SS
•
Tinned pins: T
Note:
1. Options with the same marker may not be combined with each
other.
2. Frequency stability inclusive of 25° C calibration, temperature,
Vcc and load change.
Option
Enable / disable on pin 1
Version BH
Option
Tri-state on pin 1
Version CH
Table 1:
Other temperature ranges
and stability available
QEN 49/55-BH
±25 ppm
±50 ppm
QEN 49/55-CH
±25 ppm
±50 ppm
3.5 kHz - 14 MHz
14 MHz - 40 MHz
40 MHz - 70 MHz
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
“1”on pin 1 =
disable on pin 8
“0”on pin 1 =
enable on pin 8
“1”on pin 1 =
enable on pin 8
“0”on pin 1 =
High Z on pin 8
Lead time between input signal and output reaction
≤
20 ns
Attention: should pin 1 not be used, please always tie to Vcc
3-15
Vol. 2
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