Q-Tech QT488 - Manual (Page 2)

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Q-TECH Corporation - 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-tech.com
QT481 AND QT488 SERIES
ULTRA-LOW CURRENT REAL TIME CLOCK OSCILLATORS
2.5Vdc and 3.3Vdc - 32.768kHz
QPDS-0008 (Revision A, June 2013) (ECO # 10907)
Electrical Characteristics
Parameters +3.3Vdc +2.5Vdc
Output frequency range (Fo) 32.768kHz
Supply voltage (Vdd) +3.3Vdc ± 10% +2.5Vdc ± 10%
Maximum Applied Voltage
(Vdd max.)
+5Vdc
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)
0.42 mA typ., 0.7mA max. 0.24 mA typ., 0.5mA max.
Symmetry
(50% of ouput waveform)
50/50% typ., 45/55% max.
Rise and Fall times
(Tr, Tf betweeen 10% and 90% of output waveform)
0.2µs typ., 1µs max.
Output Load 15pF
Start-up time (Tstup) 10ms max.
Output voltage (Voh/Vol) 0.9 x Vdd min.; 0.1 x Vdd max.
Output Current (Ioh/Iol) ± 2mA min.
Enable/Disable function Pin 1
VIH ≥ 0.7Vdd: Active
VIL ≤ 0.3Vdd: High Impedance
Stand-by current: 10µA max.
Aging ± 5ppm max. first year / ± 2ppm max. per year thereafter
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