32.768 kHz
QT381 AND QT386 SERIES
Q-TECH
CORPORATION
ULTRA-LOW CURRENT, HIGH-TEMPERATURE REAL TIME CLOCK OSCILLATORS
2.5Vdc and 3.3Vdc - 32.768kHz
Q-Tech’s high temperature real time clock oscillators consist of
a source clock square wave generator and a miniature strip
quartz crystal built in a low profile hermetically ceramic
package with gold plated contact terminals.
The device provides a precision clock for timekeeping for most
down-hole electronic applications by using AT cut quartz
crystals. The design and construction of the QT381 and QT386
series will make accuracy-improvement techniques over the
traditional RTC with a 32.768kHz quartz tuning-fork crystal,
which due to its parabolic characteristics that do not provide
much accuracy over a wide temperature range. As a result,
there is a gaining or losing up to seconds per day and tens of
minutes per year.
The device is built using high temperature materials and
processes suitable for long life and highest reliability.
Description
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Made in the USA
ECCN: EAR99
+3.3Vdc and +2.5Vdc operation
32.768kHz square wave CMOS output
Wide operating temperature -55°C to +185°C
Frequency stability (±150ppm to ±250ppm)
Ultra-low current, 70 µA, suitable for battery operation
Excellent AT cut crystal temperature characteristics
Tristate output standard
Fundamental design
4 or 6 leads
Fast start-up time
Hermetically sealed package
100% testing over temperature
Features
• Real-time clock driver
• 32.768kHz output crystal modules
Applications
QPDS-0007 (Rev _, April 2014)
Q-TECH Corporation - 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-t ec h.com
1 of 7
32.768 kHz
QT381 AND QT386 SERIES
Q-TECH
CORPORATION
ABSOLUTE MAXIMUM RATIMGS
Supply Voltage
Output Current
Parameter
Symbol
ULTRA-LOW CURRENT, HIGH-TEMPERATURE REAL TIME CLOCK OSCILLATORS
2.5Vdc and 3.3Vdc - 32.768kHz
Condition
Rating
Unit
Vdd
Iout
Tj
Between Vdd and Vss
Output pin
-0.3 to +7.0
+150
±3
Junction Temperature
Storage Temperature
mA
ºC
ºC
V
Tstg.
-62 to -150
ELECTRICAL CHARACTERISTICS
Parameter
Symbol
Condition
Output frequency
Supply Voltage
Operating Temperature
Frequency Stability
Supply Current
Symmetry
Output load
Vdd
DF/DT
DC
Tr/Tf
Voh
Vih
Vil
Ist
INHN=Low
Vol
Tod
CL
Idd
At 1/2 Vdd
10% to 90%
25ºC, 15pF
Top
Fo
Min.
2.5 ± 10%
Rating
32.768
Typ.
Max.
3.3 ± 10%
Unit
kHz
Vdc
Ppm
µA
pF
µs
V
V
V
µA
ms
V
ns
%
ºC
See Ordering information
See Ordering information
70
50
15
50
45
120
55
Risr and Fall times
Output disable delay
Output voltage High
Output Voltage Low
200
Vdd
0.4
1
Vdd -0.4
0.7 Vdd
0
Tristate input voltage H
Tristate input voltage L
Stand-by current
Start-up time
0.3 Vdd
20
10
Tstup
QPDS-0007 (Rev _, April 2014)
Q-TECH Corporation - 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-t ec h.com
2 of 7
32.768 kHz
QT381 AND QT386 SERIES
Q-TECH
CORPORATION
Package Outline and Pin Connections -
Dimensions are in inches (mm)
QT381
0.276 ± .006
(7.0 ± 0.2)
4
3
ULTRA-LOW CURRENT, HIGH-TEMPERATURE REAL TIME CLOCK OSCILLATORS
2.5Vdc and 3.3Vdc - 32.768kHz
QT382
QT383
4
QT384
(4X)
R 0.20
(R .008)
(4X)
R .200
(R .008)
.276 ± .006
(7.00 ± .200)
3
4
0.197 ± .006
(5.00 ± 0.15)
3
P/N
FREQ.
D/C S/N
1
2
0.200 ± .008
(5.08 ± 0.2)
.197 ± .006
(5.00 ± .150)
P/N
FREQ.
D/C S/N
1
.200 ± .008
(5.08 ± .200)
2
ESD SYMBOL
FOR PIN NO. 1
MCM8064-1M
30.000M
D/C S/N
1
.200 ± .008
(5.08 ± .203)
2
ESD SYMBOL
FOR PIN NO. 1
ESD SYMBOL
FOR PIN NO. 1
0.100
max.
(2.54)
0.028
(0.72)
0.040
(1.02)
.079
.008
(.200)
.100
max.
(2.54)
.028
(.720)
.063 ± .005
(1.60 ± .130)
(2.00)
max.
0.008
(0.20)
0.200±.005
(5.80±0.13)
.276 ± .006
(7.01 ± .152)
0.018±.003
(.46±0.08)
.018±.003
(.46 ± .08)
(4X)
R .006
(R .152)
.216
(5.49)
0.200 ± .005
0.008 ± .001
(.20 ± 0.03)
0.205 ± .010
(5.20 ± 0.25)
(5.080 ± 0.13)
1
2
3
.197 ± .006
(5.00 ±.152)
A’
.008
(.203)
4
QT386
QT387
.047 ± .005
(1.20 ± .130)
.055
(1.40)
.040
(1.01)
.102
(2.60)
QT380
QT385
Pin No.
• Package material: 91% AL2O3
• Lead material: Kovar
• Lead finish: Gold Plated: 50μ ~ 80μ inches
Nickel Underplate: 100μ ~ 250μ inches
• Weight: 0.6g typ., 3.0g max.
QPDS-0007 (Rev _, April 2014)
Package Information
1
2
3
4
GND/CASE
OUTPUT
VDD
Function
TRISTA
TE
Pin No.
1
2
3
4
5
6
Function
TRISTA
TE
N/C
N/C
OUTPUT
VDD
GND/CASE
Q-TECH Corporation - 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-t ec h.com
3 of 7
32.768 kHz
QT381 AND QT386 SERIES
Q-TECH
CORPORATION
ULTRA-LOW CURRENT, HIGH-TEMPERATURE REAL TIME CLOCK OSCILLATORS
2.5Vdc and 3.3Vdc - 32.768kHz
Ordering Information
Q T 3 81 L
Solder Dip Option:
T =
Standard
S = Solder Dip
(*)
G = Solder Dip
(*)
Q T3 81L C7 M -32. 768 kHz
(Sample part number)
C 7 M - 32. 76 8kHz
High Temperature
Real Time Clock Oscillator
(See page 3)
Screening Option:
Blank =
No Screening
M = Per MIL-PRF-55310, Level B
Operating Temperature Option:
A
=
0ºC to + 150ºC
B
=
0ºC to + 175ºC
C
=
0ºC to + 185ºC
E
=
-20ºC to + 150ºC
F
=
-20ºC to + 175ºC
G
=
-20ºC to + 185ºC
I
=
-40ºC to + 150ºC
J
=
-40ºC to + 175ºC
K
=
-40ºC to + 185ºC
M
=
-55ºC to + 150ºC
N
=
-55ºC to + 175ºC
O
=
-55ºC to + 185ºC
Frequency Stability Option:
5
= ±
150ppm
6
= ±
175ppm
7
= ±
200ppm
8
= ±
250ppm
Output Frequency
Package:
Logic & Supply Voltage:
L = LVHCMOS +3.3V
N = LVHCMOS +2.5V
Not every combination of Operating Temperature
range and Frequency Stability will be available.
For Non-Standard requirements, contact Q-Tech Corporation at Sales@Q-Tech.com
• Standard packaging in black foam
• Standard packaging in anti-static plastic tube (60 pcs/tube)
• Tape and Reel (800 pcs/reel) is available for an additional
charge.
Packaging Options
(*) Hot Solder Dip options for an additional cost:
S = Sn60/Pb40 per MIL-PRF 55310
G = Lead free Alloy SAC305 (96.5% Sn, 3% Ag, 0.5% Cu)
• P. I. N. D. test (MIL-STD 883, Method 2020, Condition B)
Other Options Available For An Additional Charge
QPDS-0007 (Rev _, April 2014)
Q-TECH Corporation - 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-t ec h.com
Specifications subject to change without prior notice.
4 of 7
32.768 kHz
QT381 AND QT386 SERIES
Q-TECH
Reflow Profile
CORPORATION
ULTRA-LOW CURRENT, HIGH-TEMPERATURE REAL TIME CLOCK OSCILLATORS
2.5Vdc and 3.3Vdc - 32.768kHz
The five transition periods for the typical reflow process are:
• Preheat
• Flux activation
• Thermal equalization
• Reflow
• Cool down
TYPICAL REFLOW PROFILE FOR Sn-Pb ASSEMBLY
Embossed Tape and Reel Information For QT384
TEMP(*C)
Ramp up (3ºC/s Max)
250
225
200
175
150
240º
Ramp down (6ºC/s Max)
225º min.
240º max.
60s min.
150s max.
60s min.
120s max.
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
Time (s)
Dimensions are in mm. Tape is compliant to EIA-481-A.
Reel size (Diameter in mm)
178
330
Reel size vs. quantity:
Q-Tech Standard Screening/QCI (MIL-PRF55310) is available for all of our QT381 and QT386 series. Q-Tech can also customize
screening and test procedures to meet your specific requirements. The QT381 and QT386 series are designed and processed to exceed
the following test conditions:
Temperature cycling
Constant acceleration
Seal: Fine and Gross 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
ESD Classification
Moisture Sensitivity Level
Environmental Test
Test Conditions
MIL-STD-883, Method 1010, Cond. B
MIL-STD-883, Method 2001, Cond. A, Y1
MIL-STD-883, Method 1014, Cond. A and C
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
MIL-STD-883, Method 3015, Class 1 HBM 0 to 1,999V
J-STD-020, MSL=1
Environmental Specifications
Qty per reel (pcs)
150
800
Note 1:
Additional shock results successfully passed on 16MHz, 20MHz, 24MHz, 40MHz, and 80MHz
• Shock 1,500g peak, half-sine, 0.5ms duration (MIL-STD-883, Method 2002, Cond. B)
• Random Vibration, 3 minuets per axis, (MIL-STD-202, Method 214, Cond. Ik, 46.32 g RMS)
QPDS-0007 (Rev _, April 2014)
Q-TECH Corporation - 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-t ec h.com
Please contact Q-Tech for higher shock requirements
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