CRYSTAL OSCILLATOR - XO
QEN 49/55-BH/CH
FULL MILITARY DIL XO
These high perform ance DIL clock oscillators are designed for high vibration
and extended tem perature 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 m ounted on
3 points on a true hybrid alum ina substrate with gold printed circuit path
and is well suited for m ilitary and avionics applications. The sam e perfor-
m ances are presented for higher environm ental 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.
Minim um ordering inform ation requirem ent
(See Table 1 for available com binations)
(See page 3-19 for package drawing)
Frequency range
3.5 KHz to 70 MHz
Applications
Exa m p le : QEN 5 5 - BHR 16 MHz AY5 0 S B / T
/
Test equipm ent
Military airborne
Space applications
Package
55 = DIL 4 pins
49 = DIL 14 pins
Option
Features
Tem perature ranges:
Frequency stability:
Supply voltage:
Current consum ption:
Load (BH version):
Load (CH version):
Option duty cycle:
(BH version up to 14 MHz):
(BH/CH version from 14 MHz):
Option
Enable/Disable: Up to 14 MHz:
Option tristate output:
Option external trim m er:
up to -55° C to +125° C
±25 to ±100 ppm
+5 V
10 to 50 m A
25pF/3TTL-gates
15pF-25pF/10TTL-gates
R = 50/50 ± 10 % (or ± 5 %)
I = enable/disable *
J = tristate *
T = trim m er *
Tem perature range
DT = -40° C ~ +85° C •
AY = -55° C ~ +125° C ∞
Frequency stability
± 25 ppm ∞
50/50 ± 5 %
50/50 ± 10 %
Version BH
Version CH ± 50 ppm
3 to 20 pF
± 100 ppm
up to 30 MHz on pin 1
B or S
Screening option: SB / SS •
Tinned pins:T
Option screening:
Ageing (45°C/1st year) : ≤ ± 5 ppm
Note:
1. Options w ith the sam e m arker m ay not be com bined w ith each
other.
2. Frequency stability inclusive of 25° C calibration, tem perature,
Vcc and load change.
Table 1:
Other tem perature ranges
and stability available
Option
Enable / disable on pin 1
Version BH
Option
Tri-state on pin 1
Version CH
QEN 49/ 55-BH
QEN 49/ 55-CH
±25 ppm ±50 ppm
±25 ppm
Yes
±50 ppm
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
3.5 kHz - 14 MHz
14 MHz - 40 MHz
40 MHz - 70 MHz
Yes
Yes
Yes
Yes
Yes
Yes
Lead tim e 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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