Q-Tech QT581 User Manual

Q-TECH

COR PORATI ON

ULTRA-LOW CURRENT, HIGH-TEMPERATURE REAL TIME CLOCK OSCILLATORS

Description

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 or IT
cut quartz crystals. The design and construction of the
QT581 and QT588 series will make accuracy­improvement 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.

QT581 AND QT588 SERIES

2.5Vdc and 3.3Vdc - 32.768kHz

Features

• 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

• RoHS compliant

Applications

• Real-time clock driver

• 32.768kHz output crystal modules

Q-T ECH Co rpo rat ion - 1 015 0 W. J efferson Boulevard, Culver City 90232 - Tel: [phone] - Fax: [phone] - www.q-t e c h.c om

QPDS-0007 (Rev A, January 2013) (ECO #10336)

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Q-TECH

COR PORATI ON

Electrical Characteristics

Parameters +3.3Vdc +2.5Vdc

QT581 AND QT588 SERIES

ULTRA-LOW CURRENT, HIGH-TEMPERATURE REAL TIME CLOCK OSCILLATORS

2.5Vdc and 3.3Vdc - 32.768kHz

Output frequency range (Fo)

Supply voltage (Vdd)

Maximum Applied Voltage
(Vdd max.)

Frequency stability (∆F/∆T) See Ordering Information

Operating temperature (Topr) See Ordering Information

Storage temperature (Tsto) -55ºC to + 125ºC

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) 10ms max.

Output voltage (Voh/Vol)

Output Current (Ioh/Iol)

Enable/Disable function Pin 1

+3.3Vdc ± 10%

0.42 mA typ., 0.7mA max.

50/50% typ., 45/55% max.

0.9 x Vdd min.; 0.1 x Vdd max.

VIL ≤ 0.3Vdd: High Impedance

Stand-by current: 10µA max.

32.768kHz

+5Vdc

0.2µs typ., 1µs max.

15pF

± 2mA min.

VIH ≥ 0.7Vdd: Active

+2.5Vdc ± 10%

0.24 mA typ., 0.5mA max.

Aging ± 5ppm max. first year / ± 2ppm max. per year thereafter

Q-T ECH Co rpo rat ion - 1 015 0 W. J efferson Boulevard, Culver City 90232 - Tel: [phone] - Fax: [phone] - www.q-te ch .com

QPDS-0007 (Rev A, January 2013) (ECO #10336)

2 of 7

Q-TECH

(5.080 ± 0.13)

0.200 ± .005

0.040
(1.02)

0.197 ± .006

(5.00 ± 0.15)

0.276 ± .006

(7.0 ± 0.2)

(2.54)

0.100

12

43

0.018±.003

(.46±0.08)

(.20 ± 0.03)

0.008 ± .001

(5.08 ± 0.2)

0.200 ± .008

max.

0.205 ± .010

(5.20 ± 0.25)

R 0.20

(R .008)

(4X)

(0.20)

0.008

0.200±.005

(5.80±0.13)

0.028
(0.72)

P/N
FREQ.
D/C S/N

0.197 ± .006
(5.00 ± 0.15)

0.276 ± .006

(7.0 ± 0.2)

12

4 3

(5.08 ± 0.2)

0.200 ± .008

R 0.20

(R .008)

(4X)

0.060 ± .003

(1.52 ± 0.08)

(.203)

0.008

(1.40 ± 0.08)

0.055 ± .003

0.216

(5.49)

(2.54)

0.100
max.

0.018±.003
(.46±0.08)

(0.20)

0.008

0.028

(0.72)

P/N
FREQ.
D/C S/N

3º to 5º typ.

detail A’

A’

(1.40 ± 0.08)

0.055± .003

0.216

(5.49)

(.203)

0.008

0.197 ± .006
(5.00 ± 0.15)

0.276 ± .006

(7.0 ± 0.2)

(5.08 ± 0.2)

0.200 ± .008

R 0.200

(R .008)

(4X)

0.060 ± .003

(1.52 ± 0.08)

(2.54)

0.100
max.

0.018±.003

(.46±0.08)

(0.20)

0.008

0.028

(0.72)

2

43

1

P/N
FREQ.
D/C S/N

A’

3º to 5º typ.

detail A’

.102

(2.6)

0.055

(1.4)

0.040

(1.0)

(2.0)

0.079

12

34

max.

0.197±.006

(5.00±0.15)

0.276±.006

(7.0±0.2)

12

4 3

(5.08±0.2)

0.2±.008

R 0.200

(R .008)

(4X)

P/N
FREQ.
D/C S/N

0.290±0.005

(7.37±0.13)

0.350±0.005

(8.89±0.13)

0.100±0.005

(2.54±0.13)

0.200±0.005

(5.08±0.13)

0.170 Max.

(4.32)

0.018±0.003

(0.457±0.076)

0.315 max.

(8.00 max.)

0.240±0.005

(6.10±0.13)

0.040 Max.

(1.02)

FREQ.

Q-TECH

D/C S/N

12

43

P/N

1

2

4

3

0.350±0.005

0.290±0.005

0.130

0.018±.003

(8.00 max.)

(5.080±0.13)

0.100±.005

0.200±.005

(.457±0.076)

(8.89±0.13)

(7.37±0.13)

(2.54±0.13)

(5.080±0.13)

(3.30)

0.050

(1.27)

(.203)

FREQ.

Q-TECH

D/C S/N

0.315 max.

0.200±.005

0.008

MAX.

P/N

.190 MAX.

(4.826 MAX.)

(.203)

(8.00 max.)

(10.16 ± .13)

.008

.315 max.

.400 TYP.

1

2

4

3

.350 ± .005

.290 ± .005

.100 ± .005

.200 ± .005

(8.89 ± .13)

(7.37 ± .13)

(2.54 ± .13)

(5.08 ± .13)

FREQ.

Q-TECH

D/C S/N

4 X

.048 ± .002

(1.22 ± .051)

4 X

.018 ± .003

(.457 ± .076)

P/N

4 X

.290 ± .005

.190 MAX.

(1.396 ± .13)

.200 ± .005

.048 ± .002

(1.22 ± .051)

(7.37 ± .13)

(5.08 ± .13)

.100 ± .005

(2.54 ± .13)

(4.826 MAX.)

(.203) (2.794 ± .13)

(8.00 max.)

.315 max.

.055 ± .005

.008

.110 ± .005

1 2

4 3

.350 ± .005

(8.89 ± .13)

P/N
FREQ.

Q-TECH

D/C S/N

4 X

.018 ± .003

(.457 ± .076)

ULTRA-LOW CURRENT, HIGH-TEMPERATURE REAL TIME CLOCK OSCILLATORS

COR PORATI ON

Package Outline and Pin Connections - Dimensions are in inches (mm)

QT581 AND QT588 SERIES

2.5Vdc and 3.3Vdc - 32.768kHz

QT581

QT588

QT582

QT589

QT583

QT590

QT584

QT592

QPDS-0007 (Rev A, January 2013) (ECO #10336)

Package Information

Nickel Underplate: 100μ ~ 250μ inches

3

Pin No.

1
2
3
4

Function

TRISTATE

GND/CASE

OUTPUT

VDD

• Package material: 91% AL2O

• Lead material: Kovar

• Lead finish: Gold Plated: 50μ ~ 80μ inches

• Weight: 0.6g typ., 3.0g max.

Q-T ECH Co rpo rat ion - 1 015 0 W. J efferson Boulevard, Culver City 90232 - Tel: [phone] - Fax: [phone] - www.q-t e c h.c om

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