Q-Tech QT78 User Manual
Q-TECH
0.170 MAX.
0.018±.003
(0.46±0.08)
(4.318 MAX.)
0.550±.0.005
(13.970±0.13)
0.350±0.005
(8.89±0.13)
0.100±.005
0.200±.005
(2.54±0.13)
(5.080±0.13)
(7.620±0.13)
(9.525 max.)
P/N
FREQ.
D/C S/N
Q-TECH
4
3
1
2
.130 MAX.
0.300±.005
0.375 max.
3.302 MAX.
0.39
(9.91)
0.13
(3.30)
0.13
(3.30)
0.07
(1.78)
0.20
(5.08)
0.27
(6.86)
COR PORATI ON
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.
QT78 SERIES
HIGH RELIABILITY MINIATURE CRYSTAL CLOCK OSCILLATORS
1.8 to 5.0Vdc - 15kHz to 150MHz
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
Pin No.
1
2
3
4
Function
TRISTATE or NC
GND/CASE
OUTPUT
VDD
Applications
• Designed to meet today’s requirements for low
voltage applications
• Wide military clock applications
• Smart munitions
• Navigation
• Industrial controls
• Microcontroller driver
Q-TECH Corporation - 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-t ech.c om
QT78 (Revision H, January 2011) (ECO #10085)
Dimensions are in inches (mm)
Package Information
• Package material: 90% AL2O
• Lead material: Kovar
• Lead finish: Gold Plated: 50μ ~ 80μ inches
Nickel Underplate: 100μ ~ 250μ inches
• Weight: 1.1g typ., 3.0g max.
3
1
Q-TECH
COR PORATI ON
Electrical Characteristics
QT78 SERIES
HIGH RELIABILITY MINIATURE CRYSTAL CLOCK OSCILLATORS
1.8 to 5.0Vdc - 15kHz to 150MHz
Parameters QT78AC
Output frequency range (Fo)
Supply voltage (Vdd) 5.0Vdc ± 10% 3.3Vdc ± 10%
Maximum Applied Voltage
(Vdd max.)
Frequency stability (∆F/∆T)
Operating temperature (Topr)
Storage temperature (Tsto)
25 mA max. - 16MHz ~ < 32MHz
Operating supply current
(Idd) (No Load)
Symmetry
(50% of ouput waveform or
1.4Vdc for TTL)
Rise and Fall times
(with typical load)
Output Load
6ns max. - Fo < 30MHz
3ns max. - Fo ≥ 30 - 85MHz
(between 10% to 90%)
15pF // 10kohms
50pF max. or 10TTL
for (Fo < 60MHz)
30pF max. or 6TTL
for (Fo ≥ 60MHz)
35 mA max. - 32MHz ~ < 60MHz
45 mA max. - 60MHz ~ ≤ 85MHz
45/55% max. - 15kHz ~ < 15MHz
QT78HC
15kHz — 85.000MHz (*) 15kHz — 150.000MHz (*)
-0.5 to +7.0Vdc -0.5 to +5.0Vdc
20 mA max. - 15kHz ~ < 16MHz
40/60% max. - 15 ~ ≤ 85MHz
(Tighter symmetry available)
7ns max. - Fo < 30MHz
3ns max. - Fo ≥ 30 - 85MHz
(between 10% to 90%)
15pF // 10kohms
(2LSTTL)
QT78T
5ns max. - Fo < 30MHz
3ns max. - Fo ≥ 30 - 85MHz
(between 0.8V to 2.0V)
10TTL (Fo < 60MHz)
6TTL (Fo ≥ 60MHz)
QT78L
See Option codes
See Option codes
-62ºC to + 125ºC
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%)
15pF // 10kohms
(30pF max. for F ≤ 50MHz)
QT78N
125.000kHz — 133.000MHz
2.5Vdc ± 10%
3 mA max. - 125kHz ~ < 500kHz
6 mA max. - 500kHz ~ < 40MHz
15 mA max. - 40MHz ~ < 60MHz
25 mA max. - 60MHz ~ < 85MHz
35 mA max. - 85MHz ~ ≤ 133MHz
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%)
15pF // 10kohms
QT78R
125.000kHz — 100.000MHz
1.8Vdc ± 10%
4 mA max. - 125kHz ~ < 40MHz
10 mA max. - 40MHz ~ < 50MHz
20 mA max. - 50MHz ~ < 85MHz
25 mA max. - 85MHz ~ ≤ 100MHz
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%)
Start-up time (Tstup) 5ms max.
Output voltage (Voh/Vol)
Output Current (Ioh/Iol)
Enable/Disable
Tristate function Pin 1
Jitter RMS 1σ (at 25ºC)
Aging (at 70ºC)
0.9 x Vdd min.; 0.1 x Vdd max. 2.4V min.; 0.4V max.
± 24mA max.
± 8mA max.
VIH ≥ 2.2V Oscillation;
VIL ≤ 0.8V High Impedance
8ps typ. - < 40MHz
5ps typ. - ≥ 40MHz
(*) Frequency as low as 1kHz without tristate function available. Contact Q-Tech for details.
-1.6 mA/TTL
+40 µA/TTL
± 5ppm max. first year / ± 2ppm max. per year thereafter
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
15ps typ. - < 40MHz
8ps typ. - ≥ 40MHz
Q-TECH Corporation - 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-t e ch.co m
QT78 (Revision H, January 2011) (ECO #10085)
2
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