32.768 kHz
QT581 AND QT588 SERIES
Q-TECH
CORPORATION
EXTREME CURRENT, HIGH-TEMPERATURE REAL TIME CLOCK DRIVER 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 round or 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 on
cut quartz crystals. The design and construction of the
QT581 and QT588 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 +200°C
Tight frequency stability (±40ppm to ±250ppm)
Ultra-low current suitable for battery operation
Excellent AT and IT cut crystal temperature characteristics
Tristate output standard
Fundamental design
Fast start-up time
Hermetically sealed package
100% testing over temperature
Features
• Real-time clock driver
• 32.768kHz output crystal modules
Applications
Q-TECH Corporation - 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-te ch.com
QPDS-0007 (Rev B, June 2015
ECO#11537)
1 of 7
32.768 kHz
QT581 AND QT588 SERIES
Q-TECH
CORPORATION
EXTREME CURRENT, HIGH-TEMPERATURE REAL TIME CLOCK DRIVER OSCILLATORS
2.5Vdc and 3.3Vdc - 32.768kHz
Electrical Characteristics
Output frequency (Fo)
Supply voltage (Vdd)
Parameters
+3.3Vdc
+3.3Vdc ± 10%
32.768kHz
+5Vdc
+2.5Vdc
+2.5Vdc ± 10%
Maximum Applied Voltage
(Vdd max.)
Frequency stability (∆F/∆T)
Storage temperature (Tsto)
Operating temperature (Topr)
Operating supply current
(Idd) (No Load)
Symmetry
(50% of ouput waveform)
Rise and Fall times
(Tr, Tf betweeen 10% and 90% of output waveform)
Output Load
Start-up time (Tstup)
See Ordering Information
See Ordering Information
0.42 mA typ., 0.7mA max.
-55ºC to + 125ºC
0.24 mA typ., 0.5mA max.
50/50% typ., 45/55% max.
0.2µs typ., 1µs max.
10ms max.
15pF
Output voltage (V ol)
oh/V
Output Current (Ioh/Iol)
0.9 x Vdd min.; 0.1 x Vdd max.
VIH ≥ 0.7Vdd: Active
VIL ≤ 0.3Vdd: High Impedance
Stand-by current: 10µA max.
± 2mA min.
Enable/Disable function Pin 1
Aging
± 5ppm max. first year / ± 2ppm max. per year thereafter
Q-TECH Corporation - 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-te ch.com
QPDS-0007 (Rev B, June 2015
ECO#11537)
2 of 7
32.768 kHz
QT581 AND QT588 SERIES
Q-TECH
CORPORATION
EXTREME CURRENT, HIGH-TEMPERATURE REAL TIME CLOCK DRIVER OSCILLATORS
2.5Vdc and 3.3Vdc - 32.768kHz
Package Outline and Pin Connections -
Dimensions are in inches (mm)
QT581
(4X)
R 0.20
(R .008)
0.276 ± .006
(7.0 ± 0.2)
4
3
(4X)
R .200
(R .008)
4
3
QT582
.276 ± .006
(7.00 ± .200)
QT583
.276 ± .006
(7.00 ± .200)
4
3
(4X)
R .200
(R .008)
QT84
.276 ± .006
(7.01 ± .152)
4
3
(4X)
R .006
(R .152)
0.197 ± .006
(5.00 ± 0.15)
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
2
P/N
FREQ.
D/C S/N
1
2
.200 ± .008
(5.08 ± .200)
P/N
.197 ± .006
(5.00 ± .150)
FREQUENCY
D/C S/N
1
.200 ± .008
(5.08 ± .203)
2
.197 ± .006
(5.00 ± .150)
ESD SYMBOL
FOR PIN NO. 1
ESD SYMBOL
FOR PIN NO. 1
.200 ± .008
(5.08 ± .200)
0.100
max.
(2.54)
0.028
(0.72)
0.040
(1.02)
.008
(.200)
.100
max.
(2.54)
.028
(.720)
.057 ± .005
(1.45 ± .130)
.008
(.200)
.100
max.
(2.54)
.028
(.720)
.079
(2.00)
max.
0.008
(0.20)
0.200±.005
(5.80±0.13)
.018 ± .003
(.460 ± .080)
.018±.003
(.46 ± .08)
.063 ± .005
(1.60 ± .130)
1
2
3
0.018±.003
(.46±0.08)
.216
(5.49)
.197 ± .006
(5.00 ±.152)
.216
(5.49)
4
A’
0.200 ± .005
0.008 ± .001
(.20 ± 0.03)
0.205 ± .010
(5.20 ± 0.25)
(5.080 ± 0.13)
.008
(.203)
.062 ± .005
(1.57 ± .130)
A’
.055
.040
(1.01)
.102
(2.60)
3º to 5º typ.
detail A’
.008
(.203)
(1.40)
.047 ± .005
(1.20 ± .130)
QT588
.350 ± .005
(8.89 ± .130)
4
3
QT589
0.350±0.005
(8.89±0.13)
4
3
QT590
.350 ± .005
(8.89 ± .13)
4
3
QT592
.350 ± .005
(8.89 ± .13)
4
3
.290 ± .005
(7.37 ± .130)
Q-TECH
P/N
FREQ.
D/C S/N
0.290±0.005
(7.37±0.13)
Q-TECH
P/N
FREQ.
D/C S/N
Q-TECH
P/N
FREQ.
D/C S/N
.290 ± .005
(7.37 ± .13)
Q-TECH
P/N
FREQ.
D/C S/N
.290 ± .005
(7.37 ± .13)
1
.100 ± .005
(2.54 ± .130)
2
1
0.100±.005
(2.54±0.13)
2
1
2
.100 ± .005
(2.54 ± .13)
1
2
.100 ± .005
(2.54 ± .13)
.200 ± .005
.200 ± .005
(5.08 ± .130)
0.200±.005
(5.080±0.13)
.200 ± .005
(5.08 ± .13)
(5.08 ± .13)
.170 Max.
(4.32)
0.130
(3.30)
MAX.
.190 MAX.
(4.826 MAX.)
.048 ± .002
4X
.190 MAX.
(4.826 MAX.)
.018 ± .003
(.457 ± .076)
0.050
(1.27)
0.018±.003
.315 max.
(8.00 max.)
.048 ± .002
(1.22 ± .051)
.018 ± .003
(.457 ± .076)
4X
(1.22 ± .051)
.018 ± .003
4X
4X
(.457 ± .076)
.315 max.
(.457±0.076)
.315 max.
(8.00 max.)
0.315 max.
(8.00 max.)
(8.00 max.)
.040
(1.02)
.025
(0.66)
Max.
Min.
.240 ± .005
(6.10 ± .130)
.055 ± .005
(1.396 ± .13)
.008
.110 ± .005
(2.794 ± .13)
0.200±.005
(5.080±0.13)
.400 TYP.
0.008
(.203)
.008
(.203)
(.203)
(10.16 ± .13)
• 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.
Package Information
Pin No.
1
2
3
4
TRISTA
TE
GND/CASE
OUTPUT
VDD
Function
Q-TECH Corporation - 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-te ch.com
ECO#11537)
QPDS-0007 (Rev B, June 2015
3 of 7
32.768 kHz
QT581 AND QT588 SERIES
Q-TECH
CORPORATION
EXTREME CURRENT, HIGH-TEMPERATURE REAL TIME CLOCK DRIVER OSCILLATORS
2.5Vdc and 3.3Vdc - 32.768kHz
Ordering Information
Q T5 81L 80M - 32 .7 68k Hz
Q T 5 81 L
Solder Dip Option:
T =
Standard
S = Solder Dip
(*)
G = Solder Dip
(*)
(Sample part number)
80
M - 32. 768 kHz
High Temperature
Real Time Clock Oscillator
(See page 3)
Screening Option:
Blank = No Screening
M = Per MIL-PRF-55310, Level B
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
±40ppm
±75ppm
±40ppm
±75ppm
±75ppm
±75ppm
±100ppm
±150ppm
±200ppm
±250ppm
±200ppm
±250ppm
±250ppm
±200ppm
±250ppm
±250ppm
±250ppm
±250ppm
Operating Temperature Option:
@ 0ºC to +175ºC (Operable up to + 185ºC)
@ 0ºC to +175ºC (Operable up to + 185ºC)
@ -20ºC to +175ºC (Operable up to + 185ºC)
@ -20ºC to +175ºC (Operable up to + 185ºC)
@ 0ºC to +185ºC
@ -20ºC to +185ºC
@ -20ºC to +185ºC
@ -20ºC to +185ºC
@ -20ºC to +175ºC (Operable up to + 185ºC)
@ -40ºC to +175ºC (Operable up to + 185ºC)
@ -40ºC to +185ºC
@ -40ºC to +185ºC
@ -55ºC to +185ºC
@ 0ºC to +200ºC
@ 0ºC to +200ºC
@ -20ºC to +200ºC
@ -40ºC to +200ºC
@ -55ºC to +200ºC
Output Frequency
Package:
Logic & Supply Voltage:
L = LVHCMOS +3.3V
N = LVHCMOS +2.5V
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
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-te ch.com
QPDS-0007 (Rev B, June 2015
ECO#11537)
4 of 7
32.768 kHz
QT581 AND QT588 SERIES
Q-TECH
CORPORATION
EXTREME CURRENT, HIGH-TEMPERATURE REAL TIME CLOCK DRIVER OSCILLATORS
2.5Vdc and 3.3Vdc - 32.768kHz
Reflow Profile
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 QT588
FEEDING (PULL) DIRECTION
2.0±0.1 4.0±0.1
1.75±0.1
0.3±.005
5°Max
Ø1.5
11.5
16±0.1
Ø1.5
2.0
26
Ø178±1
or
Ø330±1
9.271
TEMP(*C)
Ramp up (3ºC/s Max)
250
225
200
175
150
240º
4.699±0.1
Ramp down (6ºC/s Max)
225º min.
240º max.
60s min.
150s max.
60s min.
120s max.
7.747±0.1
Ø13.0±0.5
2.5
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.
120°
Reel size vs. quantity:
Reel size (Diameter in mm)
178
330
Qty per reel (pcs)
150
800
Q-Tech Standard Screening/QCI (MIL-PRF55310) is available for all of our QT581 and QT588 series. Q-Tech can also customize
screening and test procedures to meet your specific requirements. The QT581 and QT588 series are designed and processed to exceed
the following test conditions:
Environmental Test
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
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
Note 1:
Additional shock results successfully passed on 16MHz, 20MHz, 24MHz, 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)
• Shock 36,000g peak, half-sine, 0.12 ms duration
Q-TECH Corporation - 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-te ch.com
QPDS-0007 (Rev B, June 2015
ECO#11537)
Please contact Q-Tech for higher shock requirements
5 of 7
24.0±0.3
P/N
FREQUENCY
D/C S/N
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