QT78 SERIES
Q-TECH
CORPORATION
HIGH-RELIABILITY MINIATURE CLOCK OSCILLATORS
1.8 to 5.0Vdc - 15kHz to 150MHz
Description
Q-Tech’s surface-mount QT78 Series oscillators consist
of an IC 5Vdc, 3.3Vdc, 2.5Vdc, 1.8Vdc clock square
wave generator and a round AT high-precision quartz
crystal built in a rugged surface-mount ceramic J-lead
miniature package.
Features
• Made in the USA
• ECCN: EAR99
• DFARS 252-225-7014 Compliant:
Electronic Component Exemption
• USML Registration # M17677
• Available as QPL MIL-PRF-55310/27, /28, and /30
• Broad frequency range from 15kHz to 150MHz
• Rugged 4 point mount design for high shock and
vibration
• ACMOS, HCMOS, TTL or LVHCMOS logic
• Tri-State Output Option (D)
• Hermetically sealed ceramic SMD package
• Fundamental and 3rd Overtone designs
• Low phase noise
• Custom designs available
• Q-Tech does not use pure lead or pure tin in its
products
• RoHS compliant
Package Specifications and Outline
0.550±.0.005
(13.970±0.13)
4
3
Q-TECH
P/N
FREQ.
D/C S/N
Pin No.
0.350±0.005
(8.89±0.13)
1
2
3
4
TRISTATE or NC
GND/CASE
OUTPUT
VDD
Function
1
2
0.100±.005
(2.54±0.13)
0.200±.005
(5.080±0.13)
0.170 MAX.
(4.318 MAX.)
0.018±.003
(0.46±0.08)
0.39
(9.91)
0.27
(6.86)
0.07
(1.78)
0.13
(3.30)
0.375±0.005
(9.525±0.13)
.130 MAX.
0.13
(3.30)
Applications
3.302 MAX.
0.20
(5.08)
0.300±.005
(7.620±0.13)
• Designed to meet today’s requirements for low voltage
applications
• Wide military clock applications
• Smart munitions
• Navigation
• Industrial controls
• Microcontroller driver
Dimensions are in inches (mm)
Package material: 90% AL2O3
Lead material: Kovar
Lead finish:
• Gold Plated: 50µ ~ 80µ inches
• Nickel Underplate: 100µ ~ 250µ inches
Q-TECH Corporation - 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-t ec h.com
QT78 (Revision C, July 2008) (ECO #9380)
1
QT78 SERIES
Electrical Characteristics
Output frequency range (Fo)
Supply voltage (Vdd)
Frequency stability (∆F/∆T)
Storage temperature (Tsto)
Operating supply current
(Idd) (No Load)
Symmetry
(50% of ouput waveform or
1.4Vdc for TTL)
Rise and Fall times
(with typical load)
CORPORATION
Q-TECH
HIGH-RELIABILITY MINIATURE CLOCK OSCILLATORS
1.8 to 5.0Vdc - 15kHz to 150MHz
QT78HC
QT78T
QT78L
QT78N
QT78R
Parameters
QT78AC
15kHz — 85.000MHz (*)
5.0Vdc ± 10%
15kHz — 150.000MHz (*)
See Option codes
-62ºC to + 125ºC
3.3Vdc ± 10%
125.000kHz — 133.000MHz
2.5Vdc ± 10%
125.000kHz — 100.000MHz
1.8Vdc ± 10%
Operating temperature (Topr)
20 mA max. -
25 mA max. -
35 mA max. -
45 mA max. -
15kHz ~ < 16MHz
16MHz ~ < 32MHz
32MHz ~ < 60MHz
60MHz ~ ≤ 85MHz
See Option codes
3 mA max. - 15kHz ~ < 500kHz
6 mA max. - 500kHz ~ < 16MHz
10 mA max. - 16MHz ~ < 32MHz
20 mA max. - 32MHz ~ < 60MHz
30 mA max. - 60MHz ~ < 100MHz
40 mA max. - 100MHz ~ < 130MHz
50 mA max. - 130MHz ~ ≤150MHz
45/55% max. - 15kHz ~ < 15MHz
40/60% max. - 15 ~ ≤ 150MHz
(Tighter symmetry available)
6ns max. - 15kHz ~ < 40MHz
3ns max. - 40 ~ ≤ 150MHz
(between 10% to 90%)
(30pF max. for F ≤ 50MHz)
15pF // 10kohms
3 mA max. - 125kHz
6 mA max. - 500kHz
15 mA max. - 40MHz
25 mA max. - 60MHz
35 mA max. - 85MHz
~ < 500kHz
~ < 40MHz
~ < 60MHz
~ < 85MHz
~ ≤ 133MHz
4 mA max. - 125kHz
10 mA max. - 40MHz
20 mA max. - 50MHz
25 mA max. - 85MHz
~ < 40MHz
~ < 50MHz
~ < 85MHz
~ ≤ 100MHz
6ns max. - Fo < 30MHz
3ns max. - Fo ≥ 30 - 85MHz
(between 10% to 90%)
50pF max. or 10TTL
for (Fo < 60MHz)
30pF max. or 6TTL
for (Fo ≥ 60MHz)
15pF // 10kohms
45/55% max. - 15kHz ~ < 15MHz
40/60% max. - 15 ~ ≤ 85MHz
(Tighter symmetry available)
7ns max. - Fo < 30MHz
3ns max. - Fo ≥ 30 - 85MHz
(between 10% to 90%)
15pF // 10kohms
(2LSTTL)
5ns max. - Fo < 30MHz
3ns max. - Fo ≥ 30 - 85MHz
(between 0.8V to 2.0V)
10TTL (Fo < 60MHz)
6TTL (Fo ≥ 60MHz)
45/55% max. - 125kHz ~ < 15MHz
40/60% max. - 15 ~ ≤ 133MHz
(Tighter symmetry available)
5ns max. - 125kHz ~ < 40MHz
3ns max. - 40 ~ ≤ 133MHz
(between 10% to 90%)
45/55% max. - 125kHz~ < 15MHz
40/60% max. - 15 ~ ≤ 100MHz
(Tighter symmetry available)
5ns max. - 125kHz ~ < 40MHz
3ns max. - 40 ~ ≤ 100MHz
(between 10% to 90%)
15pF // 10kohms
Output Load
Output voltage (Voh/Vol)
Output Current (Ioh/Iol)
Enable/Disable
Tristate function Pin 1
Start-up time (Tstup)
0.9 x Vdd min.; 0.1 x Vdd max.
± 24mA max.
± 8mA max.
2.4V min.; 0.4V max.
-1.6 mA/TTL
+40 µA/TTL
5ms max.
0.9 x Vdd min.; 0.1 x Vdd max.
± 4mA max.
VIH ≥ 0.7 x Vdd Oscillation;
VIL ≤ 0.3 x Vdd High Impedance
Jitter RMS 1σ (at 25ºC)
Aging (at 70ºC)
8ps typ. - < 40MHz
5ps typ. - ≥ 40MHz
VIH ≥ 2.2V Oscillation;
VIL ≤ 0.8V High Impedance
± 5ppm max. first year / ± 2ppm max. per year thereafter
15ps typ. - < 40MHz
8ps typ. - ≥ 40MHz
(*) Frequency as low as 1kHz without tristate function available. Contact Q-Tech for details.
Q-TECH Corporation
-
10150 W. Jefferson Boulevard, Culver City 90232
-
Tel: 310-836-7900 - Fax: 310-836-2157
-
www.q-te c h.c om
QT78 (Revision C, July 2008) (ECO #9380)
2
QT78 SERIES
Q-TECH
Ordering Information
CORPORATION
HIGH-RELIABILITY MINIATURE CLOCK OSCILLATORS
1.8 to 5.0Vdc - 15kHz to 150MHz
Tristate Option D
1
4
5
6
9
10
11
12
14
15
=
=
=
=
=
=
=
=
=
=
AC = ACMOS
HC = HCMOS
T = TTL
QT78XX — D — XX — M — 85.000MHz
5.0Vdc
(Left blank if no Tristate)
Screened to
MIL-PRF-55310,level B
0ºC
0ºC
-20ºC
-55ºC
-55ºC
-55ºC
-40ºC
-40ºC
-20ºC
-40ºC
(Left blank if no screening)
Output frequency
QT78L — D — XX — M —150.000MHz
3.3Vdc
Tristate Option D
1
4
5
6
9
10
11
12
14
15
=
=
=
=
=
=
=
=
=
=
± 100ppm at
± 50ppm at
± 25ppm at
± 50ppm at
± 50ppm at
± 100ppm at
± 50ppm at
± 100ppm at
± 20ppm at
± 25ppm at
to
to
to
to
to
to
to
to
to
to
+70ºC
+70ºC
+70ºC
+105ºC
+125ºC
+125ºC
+85ºC
+85ºC
+70ºC
+85ºC
(Left blank if no Tristate)
Screened to
MIL-PRF-55310,level B
0ºC
0ºC
-20ºC
-55ºC
-55ºC
-55ºC
-40ºC
-40ºC
-20ºC
-40ºC
(Left blank if no screening)
Output frequency
± 100ppm at
± 50ppm at
± 25ppm at
± 50ppm at
± 50ppm at
± 100ppm at
± 50ppm at
± 100ppm at
± 20ppm at
± 25ppm at
to
to
to
to
to
to
to
to
to
to
+70ºC
+70ºC
+70ºC
+105ºC
+125ºC
+125ºC
+85ºC
+85ºC
+70ºC
+85ºC
QT78N — D — XX — M — 133.000MHz
2.5Vdc
Tristate Option D
1
4
5
6
9
10
11
12
14
15
=
=
=
=
=
=
=
=
=
=
(Left blank if no Tristate)
Screened to
MIL-PRF-55310,level B
0ºC
0ºC
-20ºC
-55ºC
-55ºC
-55ºC
-40ºC
-40ºC
-20ºC
-40ºC
(Left blank if no screening)
Output frequency
QT78R — D — XX — M — 100.000MHz
1.8Vdc
Tristate Option D
1
4
5
6
9
10
11
12
14
15
=
=
=
=
=
=
=
=
=
=
± 100ppm at
± 50ppm at
± 25ppm at
± 50ppm at
± 50ppm at
± 100ppm at
± 50ppm at
± 100ppm at
± 20ppm at
± 25ppm at
to
to
to
to
to
to
to
to
to
to
+70ºC
+70ºC
+70ºC
+105ºC
+125ºC
+125ºC
+85ºC
+85ºC
+70ºC
+85ºC
(Left blank if no Tristate)
Screened to
MIL-PRF-55310,level B
0ºC
0ºC
-20ºC
-55ºC
-55ºC
-55ºC
-40ºC
-40ºC
-20ºC
-40ºC
(Left blank if no screening)
Output frequency
± 100ppm at
± 50ppm at
± 25ppm at
± 50ppm at
± 50ppm at
± 100ppm at
± 50ppm at
± 100ppm at
± 20ppm at
± 25ppm at
to
to
to
to
to
to
to
to
to
to
+70ºC
+70ºC
+70ºC
+105ºC
+125ºC
+125ºC
+85ºC
+85ºC
+70ºC
+85ºC
Packaging Options
For Non-Standard requirements, contact Q-Tech Corporation at Sales@Q-Tech.com
• Solder Dip Sn/Pb 60/40%
• P. I. N. D. test
Frequency stability vs. temperature codes may not be available in all frequencies.
• Standard packaging in anti-static plastic tube (60pcs/tube)
• Tape and Reel (800pcs/reel) is available for an additional
charge.
Other Options Available For An Additional Charge
Specifications subject to change without prior notice.
Q-TECH Corporation - 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-t ec h.com
QT78 (Revision C, July 2008) (ECO #9380)
3
QT78 SERIES
Q-TECH
Reflow Profile
•
•
•
•
•
CORPORATION
HIGH-RELIABILITY MINIATURE CLOCK OSCILLATORS
1.8 to 5.0Vdc - 15kHz to 150MHz
The five transition periods for the typical reflow process are:
Preheat
Flux activation
Thermal equalization
Reflow
Cool down
Embossed Tape and Reel Information For QT78
FEEDING (PULL) DIRECTION
2.0±0.1
1.75±0.1
0.3±.005
ø1.5
4.0±0.1
5.5±0.1
14.53
±0.1
ø1.5
16±0.1
10.01±0.1
26
2.0
5º MAX
TYPICAL REFLOW PROFILE FOR Sn-Pb ASSEMBLY
TEMP(*C)
Ramp up (3ºC/s Max)
250
225
200
175
150
240º
4.80±0.1
Ramp down (6ºC/s Max)
225º min.
240º max.
60s min.
150s max.
60s min.
120s max.
ø13.0±0.5
2.5
ø178±1
or
ø330±1
Time (s)
125
100
75
50
25
0
0
20
40
60
60s min.
120s max.
80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 420
Dimensions are in mm. Tape is compliant to EIA-481-A.
120º
Reel size vs. quantity:
178
330
Reel size (Diameter in mm)
Qty per reel (pcs)
250
1000
Environmental Specifications
Q-Tech Standard Screening/QCI (MIL-PRF55310) is available for all of our QT78 Products. Q-Tech can also customize screening
and test procedures to meet your specific requirements. The QT78 product is designed and processed to exceed the following test
conditions:
Environmental Test
Temperature cycling
Constant acceleration
Seal Fine Leak
Burn-in
Aging
Vibration sinusoidal
Shock, non operating
Thermal shock, non operating
Ambient pressure, non operating
Resistance to solder heat
Moisture resistance
Terminal strength
Resistance to solvents
Solderability
Test Conditions
MIL-STD-883, Method 1010, Cond. B
MIL-STD-883, Method 2001, Cond. A, Y1
MIL-STD-883, Method 1014, Cond. A
160 hours, 125°C with load
30 days, 70°C, ±1.5ppm max
MIL-STD-202, Method 204, Cond. D
MIL-STD-202, Method 213, Cond. I (See Note 1)
MIL-STD-202, Method 107, Cond. B
MIL-STD-202, 105, Cond. C, 5 minutes dwell time minimum
MIL-STD-202, Method 210, Cond. B
MIL-STD-202, Method 106
MIL-STD-202, Method 211, Cond. C
MIL-STD-202, Method 215
MIL-STD-202, Method 208
Note 1: Additional shock results successfully passed on 16MHz, 40MHz, and 80MHz
• Shock 850g peak, half-sine, 1 ms duration (MIL-STD-202, Method 213, Cond. D modified)
• Shock 1,500g peak, half-sine, 0.5ms duration (MIL-STD-883, Method 2002, Cond. B)
Q-TECH Corporation - 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-t ec h.com
QT78 (Revision C, July 2008) (ECO #9380)
Please contact Q-Tech for higher shock requirements
4
24.0±0.3
QT78 SERIES
Q-TECH
Output Waveform (Typical)
SYMMETRY =
TH
T
x 100%
CORPORATION
HIGH-RELIABILITY MINIATURE CLOCK OSCILLATORS
1.8 to 5.0Vdc - 15kHz to 150MHz
Test Circuit
Typical test circuit for CMOS logic
+ mA
4
+
Vdc
-
3
Output
Tr
VOH
Tf
Vdd
0.9xVdd
+
Power
supply
-
QT78
0.1µF
or
2
1
0.01µF
15pF
(*)
10k
Ground
0.5xVdd
0.1xVdd
VOL
TH
GND
Tristate Function
Frequency vs. Temperature Curve
T
40
30
20
10
PPM
The Tristate function on pin 1 has a built-in pull-up resistor typical 50kΩ, so it
can be left floating or tied to Vdd without deteriorating the electrical performance.
(*) CL includes probe and jig capacitance
Frequency-Temperature Curves QT78RD-70MHz 1.8Vdc
0
-10
-20
-30
-40
-55 -50 -45 -40 -35 -30 -25 -20 -15 -10
-5
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95 100 105 110 115 120 125
Temp (ºC)
Thermal Characteristics
The heat transfer model in a hybrid package is described in
figure 1.
D/A epoxy
Die
D/A epoxy
45º
Heat
Hybrid Case
45º
Substrate
Heat spreading occurs when heat flows into a material layer of
increased cross-sectional area. It is adequate to assume that
spreading occurs at a 45° angle.
The total thermal resistance is calculated by summing the
thermal resistances of each material in the thermal path
between the device and hybrid case.
RT = R1 + R2 + R3 + R4 + R5
R1
R2
R3
R4
R5
Die
D/A epoxy
The total thermal resistance RT (see figure 2) between the heat
source (die) to the hybrid case is the Theta Junction to Case
(Theta JC) in°C/W.
(Figure 1)
Substrate
D/A epoxy
Hybrid Case
T
CA
• Theta junction to case (Theta JC) for this product is 30°C/W.
• Theta case to ambient (Theta CA) for this part is 100°C/W.
• Theta Junction to ambient (Theta JA) is 130°C/W.
Maximum power dissipation PD for this package at 25°C is:
• PD(max) = (TJ (max) – TA)/Theta JA
• With TJ = 175°C (Maximum junction temperature of die)
• PD(max) = (175 – 25)/130 = 1.15W
A
T
C
JC
T
J
Die
JC
CA
JA
(Figure 2)
Q-TECH Corporation - 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-t ec h.com
QT78 (Revision C, July 2008) (ECO #9380)
5
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