Q-TECH
10150 West Jefferson Boulevard
Culver City, CA 90232
Corporation
High-Reliability
Surface Mount
Crystal Oscillators
Small Size!
actual size, .550 x .350
(13.97 x 8.89)
Features.....
Tel: 310.836.7900
Fax: 310.836.2157
Email: sales@q-tech.com
www.q-tech.com
• CMOS and TTL Drive Capability
• Wide Temperature Range Availability
• Wide Frequency Range, now to 125 MHz
• Industry Standard Surface Mount Package
• Vapor Phase and Infrared Reflow Compatible
• Industry Standard Supply Voltages, 5V & 3.3V
• High-Performance Under Severe Environmental Conditions
Pictured-
QT75V,
VCXO
-
with out J leads
Voltage Controlled
Surface Mount Oscillators.
Please consult the factory.
Now offering a wide range
of
VCOs
and
VCXOs
in these
same package styles.
MIL-PRF-55310 Equivalency Table
Model#
(product catalog)
QT78TD
QT78HCD
MIL. Equiv.
/28
/27
MIL. Frequency Range
1.000 to 85.000 MHz
1.000 to 85.000 MHz
How to Order.....
Please visit our web site at
www.q-tech.com
for additional information
and the latest updates on
this product line.
Model #
QT75, QT78
Output Options
T=TTL
HC=HCMOS
AC=ACMOS
L=Low
Voltage, 3.3V
QT78
AC
10
M
-
sample part number
QT78AC10M-48.000 MHz
48.000 MHz
Frequency Options
TTL-
15 KHz to 85 MHz
HCMOS-
30 Hz to 125 MHz
ACMOS-
15 KHz to 125 MHz
Low Voltage-
15 KHz to 125 MHz
Stability
Please refer to
the stability table
next page.
Screening
Designate
M
for
Class B MIL-PRF
Screening.
If your specific requirements can not
be expressed in this manner, please
consult the factory. A custom part
number will then be assigned.
Meeting high shock
and vibration
requirements!
D*=Tri-State
Output
(add “D’ as a suffix to the
above listed logic options)
Q-TECH
10150 West Jefferson Boulevard
Culver City, CA 90232
Corporation
w/o J leads
with J leads
High-Reliability
Surface Mount
Crystal Oscillators
Pin Connections
4
3
*Optional Enable Function
Enable Control Output
Logic “1”
Enabled
Logic “0”
Disabled
(high impedance)
Pin #
1
2
3
4
Function
Enable (optional)*
Ground
Output
Vcc
.310
(7.87)
1
.550
2
.180 max
(4.57)
(13.97)
1
2
.115 max
(2.92)
leedless,
QT75
Options.....
• Low Phase Jitter
• Tri-State Output
• Low Current Designs
.350
(8.89)
4
(5.08)
3
.200
Package
Outline
Drawing
Tel: 310.836.7900
Fax: 310.836.2157
Email: sales@q-tech.com
www.q-tech.com
• Screening per MIL-PRF-55310 level B
• Various Lead and Pad Configurations
• Voltage Controlled
(request data sheet)
.390
Suggested PCB Footprint
Temperature Vs.
Stability Options
Code +/-PPM
1
100
5
50
25
50
50
100
50
100
3*
4
5
6
9
10
11
12
Temp.
o
C
0 to +70
0 to +50
0 to +70
-20 to +70
-55 to +105
-55 to +125
-55 to +125
-45 to +85
-45 to +85
• Solder Dipped Leads / Solderability Testing
• Temperature Sensor
(consult the factory)
.130
(3.30)
(9.91)
.130
(3.30)
.070
(1.78)
.200
(5.08)
.270
R
T
I
F
I
E
D
C
E
•
(6.86)
•
•
•
•
Q
-
T
e
c
h
9 0 0 1
ISO
•
•
•
•
•
R
E
G
I
S
T
E
R
E
D
i
o
a
t
C
o
r
p
o
r
n
Electrical
Specifications.....
TTL
Frequency Range:
Temperature Stability:
Supply Voltage:
Symmetry
(max.)
:
30 Hz to 15 KHz
15 KHz to 15 MHz
15 MHz to 85 MHz
85 MHz to 100 MHz
100 MHz to 125 MHz
Supply Current
(max.)
:
30 Hz to 15 KHz
15 KHz to 15 MHz
5 MHz to 30 MHz
30 MHz to 60 MHz
60 MHz to 85 MHz
85 MHz to 100 MHz
100 MHz to 125 MHz
Rise Time / Fall Times
(max.)
:
30 Hz to 30 MHz
30 MHz to 85 MHz
85 MHz to 100 MHz
100 MHz to 125 MHz
Load:
15 KHz to 85 MHz
See Table
+5.0V +/-10%
(@ 1.4V)
n/a
45/55%
40/60%
n/a
n/a
no load condition-
*requires external tuning, consult the factory
HCMOS
30 Hz to 125 MHz
See Table
+5.0V +/-10%
(@ 1/2 VCC)
45/55%
45/55%
45/55%
40/60%
40/60%
20 mA
20 mA
15 mA
35 mA
45 mA
45 mA
55 mA
10/10 nS
5/5 nS
5/5 nS
3/3 nS
10K Ohm +15 pF
ACMOS
15 KHz to 125 MHz
See Table
+5.0V +/-10%
(@ 1/2 VCC)
n/a
45/55%
45/55%
40/60%
40/60%
n/a
20 mA
15 mA
35 mA
45 mA
45 mA
55 mA
3/3 nS
3/3 nS
3/3 nS
3/3 nS
15 pF
Low Voltage
15 KHz to 125 MHz
See Table
+3.3V +/-10%
(@ 1/2 VCC)
n/a
45/55%
45/55%
40/60%
40/60%
n/a
6 mA
7 mA
12 mA
30 mA
30 mA
30 mA
3/3 nS
3/3 nS
3/3 nS
3/3 nS
15 pF
Applications.....
All Military Ruggedized Aps.
Commercial Aircraft
Cellular Base Stations
PCS Base Stations
Test Equiptment
Synthesizers
Avionics
n/a
10 mA
15 mA
25 mA
40 mA
n/a
n/a
5/5 nS
3/3 nS
n/a
n/a
10 TTL, < 85 MHz
6 TTL, > 85 MHz
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