QT78 SERIES
Q-TECH
CORPORATION
HIGH-RELIABILITY MINIATURE CLOCK OSCILLATORS
1.8 to 5.0Vdc - 15kHz to 150MHz
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.
Description
•
•
•
•
•
•
•
Features
•
•
•
•
•
•
•
•
Made in the USA
ECCN: EAR99
DFARS (Berry Amendment) Compliant
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)
• Designed to meet today’s requirements for low voltage
applications
• Wide military clock applications
• Smart munitions
• Navigation
• Industrial controls
• Microcontroller driver
Applications
3.302 MAX.
0.20
(5.08)
0.300±.005
(7.620±0.13)
Dimensions are in inches (mm)
Package material: 90% AL2O3
Lead material: Kovar
Lead finish:
• Gold Plated: 60µ ~ 90µ inches typical
• Nickel Underplate: 100µ ~ 220µ inches typical
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 B, January 2008) (ECO #9217)
1
QT78
Electrical Characteristics
Output frequency range (Fo)
Supply voltage (Vdd)
Operating temperature (Topr)
Storage temperature (Tsto)
20 mA max. -
25 mA max. -
35 mA max. -
45 mA max. -
15kHz ~ < 16MHz
16MHz ~ < 32MHz
32MHz ~ < 60MHz
60MHz ~ ≤ 85MHz
Frequency stability (∆F/∆T)
5.0Vdc ± 10%
See Option codes
See Option codes
CORPORATION
Q-TECH
QT78HC
15kHz — 150.000MHz (*)
3.3Vdc ± 10%
HIGH-RELIABILITY MINIATURE CLOCK OSCILLATORS
1.8 to 5.0Vdc - 15kHz to 150MHz
QT78T
QT78L
QT78N
Parameters
15kHz — 85.000MHz (*)
QT78AC
125.000kHz — 133.000MHz
2.5Vdc ± 10%
125.000kHz — 100.000MHz
QT78R
1.8Vdc ± 10%
-62ºC to + 125ºC
Operating supply current
(Idd) (No Load)
Symmetry
(50% of ouput waveform or
1.4Vdc for TTL)
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
(2LSTTL)
15pF // 10kohms
7ns max. - Fo < 30MHz
3ns max. - Fo ≥ 30 - 85MHz
(between 10% to 90%)
45/55% max. - 15kHz ~ < 15MHz
40/60% max. - 15 ~ ≤ 85MHz
(Tighter symmetry available)
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)
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
Rise and Fall times
(with typical load)
5ns max. - Fo < 30MHz
3ns max. - Fo ≥ 30 - 85MHz
(between 0.8V to 2.0V)
10TTL (Fo < 60MHz)
6TTL (Fo ≥ 60MHz)
6ns max. - 15kHz ~ < 40MHz
3ns max. - 40 ~ ≤ 150MHz
(between 10% to 90%)
45/55% max. - 125kHz ~ < 15MHz
40/60% max. - 15 ~ ≤ 133MHz
(Tighter symmetry available)
Output Load
(30pF max. for F ≤ 50MHz)
15pF // 10kohms
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)
15pF // 10kohms
5ns max. - 125kHz ~ < 40MHz
3ns max. - 40 ~ ≤ 100MHz
(between 10% to 90%)
Start-up time (Tstup)
Output voltage (Voh/Vol)
Output Current (Ioh/Iol)
Enable/Disable
Tristate function Pin 1
± 24mA max.
0.9 x Vdd min.; 0.1 x Vdd max.
± 8mA max.
2.4V min.; 0.4V max.
-1.6 mA/TTL
+40 µA/TTL
8ps typ. - < 40MHz
5ps typ. - ≥ 40MHz
VIH ≥ 2.2V Oscillation;
VIL ≤ 0.8V High Impedance
5ms max.
0.9 x Vdd min.; 0.1 x Vdd max.
± 4mA max.
Jitter RMS 1σ (at 25ºC)
Aging (at 70ºC)
± 5ppm max. first year / ± 2ppm max. per year thereafter
(*) Frequency as low as 1kHz without tristate function available. Contact Q-Tech for details.
15ps typ. - < 40MHz
8ps typ. - ≥ 40MHz
VIH ≥ 0.7 x Vdd Oscillation;
VIL ≤ 0.3 x Vdd High Impedance
Q-TECH Corporation
-
10150 W. Jefferson Boulevard, Culver City 90232
-
Tel: 310-836-7900 - Fax: 310-836-2157
-
www.q-tech .co m
QT78 (Revision B, January 2008) (ECO #9217)
2
QT78 SERIES
Q-TECH
Ordering Information
CORPORATION
HIGH-RELIABILITY MINIATURE CLOCK OSCILLATORS
1.8 to 5.0Vdc - 15kHz to 150MHz
Tristate Option D
(Left blank if no Tristate)
1
4
5
6
9
10
11
12
14
15
=
=
=
=
=
=
=
=
=
=
AC = ACMOS
HC = HCMOS
T = TTL
QT78XX — D — XX — M — 85.000MHz
5.0Vdc
± 100ppm at
± 50ppm at
± 25ppm at
± 50ppm at
± 50ppm at
± 100ppm at
± 50ppm at
± 100ppm at
± 20ppm at
± 25ppm at
0ºC
0ºC
-20ºC
-55ºC
-55ºC
-55ºC
-40ºC
-40ºC
-20ºC
-40ºC
Screened to
MIL-PRF-55310,level B
(Left blank if no screening)
to
to
to
to
to
to
to
to
to
to
+70ºC
+70ºC
+70ºC
+105ºC
+125ºC
+125ºC
+85ºC
+85ºC
+70ºC
+85ºC
Output frequency
QT78L — D — XX — M —150.000MHz
3.3Vdc
Tristate Option D
(Left blank if no Tristate)
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
0ºC
0ºC
-20ºC
-55ºC
-55ºC
-55ºC
-40ºC
-40ºC
-20ºC
-40ºC
Screened to
MIL-PRF-55310,level B
(Left blank if no screening)
to
to
to
to
to
to
to
to
to
to
+70ºC
+70ºC
+70ºC
+105ºC
+125ºC
+125ºC
+85ºC
+85ºC
+70ºC
+85ºC
Output frequency
QT78N — D — XX — M — 133.000MHz
2.5Vdc
Tristate Option D
(Left blank if no Tristate)
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
0ºC
0ºC
-20ºC
-55ºC
-55ºC
-55ºC
-40ºC
-40ºC
-20ºC
-40ºC
Screened to
MIL-PRF-55310,level B
(Left blank if no screening)
to
to
to
to
to
to
to
to
to
to
+70ºC
+70ºC
+70ºC
+105ºC
+125ºC
+125ºC
+85ºC
+85ºC
+70ºC
+85ºC
Output frequency
QT78R — D — XX — M — 100.000MHz
1.8Vdc
Tristate Option D
(Left blank if no Tristate)
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
0ºC
0ºC
-20ºC
-55ºC
-55ºC
-55ºC
-40ºC
-40ºC
-20ºC
-40ºC
Screened to
MIL-PRF-55310,level B
(Left blank if no screening)
to
to
to
to
to
to
to
to
to
to
+70ºC
+70ºC
+70ºC
+105ºC
+125ºC
+125ºC
+85ºC
+85ºC
+70ºC
+85ºC
Output frequency
• Standard packaging in anti-static plastic tube (60pcs/tube)
• Tape and Reel (800pcs/reel) is available for an additional
charge.
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.
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 B, January 2008) (ECO #9217)
3
QT78 SERIES
Q-TECH
Reflow Profile
CORPORATION
HIGH-RELIABILITY MINIATURE CLOCK OSCILLATORS
1.8 to 5.0Vdc - 15kHz to 150MHz
TYPICAL REFLOW PROFILE FOR Sn-Pb ASSEMBLY
14.53
±0.1
TEMP(*C)
Ramp up (3ºC/s Max)
250
225
200
175
150
ø1.5
240º
4.80±0.1
16±0.1
10.01±0.1
Ramp down (6ºC/s Max)
225º min.
240º max.
60s min.
150s max.
60s min.
120s max.
26
ø13.0±0.5
2.0
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. E.
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 B, January 2008) (ECO #9217)
Please contact Q-Tech for higher shock requirements
4
24.0±0.3
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
5º MAX
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
1
2
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 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
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 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
R1
R2
R3
R4
R5
Die
D/A epoxy
• 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.
• PD(max) = (TJ (max) – TA)/Theta JA
• With TJ = 175°C (Maximum junction temperature of die)
• PD(max) = (175 – 25)/130 = 1.15W
Maximum power dissipation PD for this package at 25°C is:
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
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 B, January 2008) (ECO #9217)
5
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