QT481 AND QT488 SERIES Q-TECH CORPORATION ULTRA-LOW CURRENT REAL TIME CLOCK OSCILLATORS 2.5Vdc and 3.3Vdc - 32.768kHz Description Q-Tech's leaded or surface-mount miniature QT481 and QT488 oscillators consist of an IC 3.3Vdc and 2.5Vdc, clock square wave generator and a miniature round or strip AT quartz crystal built in a low profile ceramic package with gold plated contact terminals. Features * * * * * * Made in the USA ECCN: EAR99 +3.3Vdc or +2.5Vdc operation 32.768kHz square wave CMOS output Wide operating temperature (*) Stand-by function: High Impedance in stand-by mode oscillator stops * Excellent AT cut crystal temperature characteristics * Tristate output option (D) * Fundamental design * Able to meet 36,000g shock half-sine * Fast Start-up time * RoHS compliant (*) Available in high temperature for down-hole application. Call Q-Tech for details Applications * Real-time clock driver * 32.768kHz output crystal modules Package Information * Package material: 90% AL2O3 * Lead material: Kovar * Lead finish: Gold Plated: 50 ~ 80 inches Nickel Underplate: 100 ~ 250 inches * Weight: 0.6g typ., 3.0g max. 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 (Revision -, October 2010) 1 QT481 AND QT488 SERIES ULTRA-LOW CURRENT REAL TIME CLOCK OSCILLATORS 2.5Vdc and 3.3Vdc - 32.768kHz Q-TECH CORPORATION Electrical Characteristics Parameters +3.3Vdc +2.5Vdc 32.768kHz Output frequency range (Fo) Supply voltage (Vdd) +2.5Vdc 10% +3.3Vdc 10% Maximum Applied Voltage (Vdd max.) +5Vdc Frequency stability (F/T) See Ordering Information Operating temperature (Topr) See Ordering Information Storage temperature (Tsto) -55C to + 125C Operating supply current (Idd) (No Load) Symmetry (50% of ouput waveform) Rise and Fall times (Tr, Tf betweeen 10% and 90% of output waveform) 0.24 mA typ., 0.5mA max. 0.42 mA typ., 0.7mA max. 50/50% typ., 45/55% max. 0.2s typ., 1s 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. VIH 0.7Vdd: Active VIL 0.3Vdd: High Impedance Stand-by current: 10A max. Enable/Disable function Pin 1 Aging Q-TECH Corporation 5ppm max. first year / 2ppm max. per year thereafter - QT481 and QT488 Series (Revision -, October 2010) 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-tech .co m 2 QT481 AND QT488 SERIES ULTRA-LOW CURRENT REAL TIME CLOCK OSCILLATORS 2.5Vdc and 3.3Vdc - 32.768kHz Q-TECH CORPORATION Package Outline and Pin Connections QT481 QT482 0.276 .006 QT483 0.276 .006 (4X) R 0.20 (R .008) (7.0 0.2) 4 Dimensions are in inches (mm) 0.276 .006 (4X) R 0.20 (7.0 0.2) 4 3 4 0.197 .006 D/C S/N (5.00 0.15) 1 0.197 .006 (5.00 0.15) 1 0.197 .006 (5.00 0.15) FREQ. D/C S/N 0.028 (0.72) 0.200.005 0.008 (0.20) 0.040 (1.02) (5.800.13) (5.000.15) D/C S/N 2 2 0.2.008 0.200 .008 (5.08 0.2) (5.08 0.2) 0.100 max. (2.54) 0.197.006 FREQ. 1 2 0.200 .008 (5.08 0.2) 3 P/N 1 0.200 .008 (R .008) 4 D/C S/N (5.080.2) 0.100 max. (2.54) 0.008 (0.20) (1.52) 0.018.003 max. (2.0) 0.028 (0.72) 0.060 0.018.003 (.460.08) 0.079 0.100 max. (2.54) 0.008 (0.20) 0.028 (0.72) (4X) R 0.200 (7.00.2) P/N FREQ. 2 0.276.006 (R .008) 3 3 P/N FREQ. (4X) R 0.200 (7.0 0.2) (R .008) P/N QT484 0.018.003 0.060 (.460.08) (1.52) (.460.08) 0.216 (5.49) 0.216 (5.49) (5.080 0.13) (.20 0.03) 0.205 .010 .102 (2.6) 0.008 0.050 0.055 0.040 (1.27) (1.4) (1.0) 0.050 (1.27) QT488 0.3500.005 QT489 QT490 0.3500.005 0.350.0.005 0.2900.005 (7.370.13) 4 Q-TECH P/N FREQ. D/C S/N 0.2900.005 (7.370.13) Q-TECH P/N FREQ. D/C S/N 0.2900.005 (7.370.13) 2 1 2 (8.890.13) 3 4 Q-TECH P/N FREQ. D/C S/N 0.350.0.005 3 4 3 QT492 (8.890.13) (8.890.13) (8.890.13) 1 3 (.203) (5.20 0.25) 4 2 4 0.008 (.203) 0.200 .005 0.008 .001 1 0.1000.005 0.100.005 (2.540.13) (2.540.13) Q-TECH P/N FREQ. D/C S/N 0.2900.005 (7.370.13) 1 2 1 3 2 0.100.005 0.100.005 (2.540.13) (2.540.13) 0.200.005 0.2000.005 0.200.005 (5.080.13) (5.080.13) 0.200.005 (5.0800.13) (5.0800.13) 0.170 Max. 0.130 (4.32) (3.30) 0.190 MAX. MAX. (4.826 MAX.) 0.190 MAX. (4.826 MAX.) 0.0180.003 0.048.002 (0.4570.076) 0.050 (1.27) 0.315 max. (.4570.076) (8.00 max.) 0.018.003 (.4570.076) 0.018.003 0.315 max. 6X (1.220.051) (8.00 max.) 0.315 max. (8.00 max.) 0.040 Max. 0.315 max. 0.055.005 (1.02) (8.00 max.) (1.3960.13) 0.2400.005 (6.100.13) 0.200.005 0 008 Pin No. 1 2 3 4 0.400TYP. 0.008 (10.1600.13) (.203) 0.008 0.110.005 (.203) (2.7940.13) (5 0800 13) Function TRISTATE or NC GND/CASE OUTPUT VDD 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 (Revision -, October 2010) 3 QT481 AND QT488 SERIES ULTRA-LOW CURRENT REAL TIME CLOCK OSCILLATORS 2.5Vdc and 3.3Vdc - 32.768kHz Q-TECH CORPORATION Ordering Information Sample part number QT488LD10M-32.768kHz Q T 4 88 L D 10 M - 32.768kHz T = Standard S = Solder Dip (*) Model #: (See page 3) Logic: L = +3.3Vdc N = +2.5Vdc Tristate Option Blank = No Tristate D = Tristate Output frequency Screening Options: Blank = No Screening M = Per MIL-PRF-55310, Level B 1 4 5 6 9 10 11 12 Frequency vs. Temperature Code: = 100ppm at 0C to +70C = 50ppm at 0C to +70C = 25ppm at -20C to +70C = 50ppm at -55C to +105C = 50ppm at -55C to +125C = 100ppm at -55C to +125C = 50ppm at -40C to +85C = 100ppm at -40C to +85C Frequency stability vs. temperature codes may not be available in all frequencies. For Non-Standard requirements, contact Q-Tech Corporation at Sales@Q-Tech.com Packaging Options * Standard packaging in anti-static plastic tube (60pcs/tube) * Tape and Reel (800pcs/reel) is available for an additional charge. Other Options Available For An Additional Charge * (*) Hot Solder Dip Sn60 per MIL-PRF 55310 * P. I. N. D. test (MIL-STD 883, Method 2020) 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-tech.com QT481 and QT488 Series (Revision -, October 2010) 4 QT481 AND QT488 SERIES ULTRA-LOW CURRENT REAL TIME CLOCK OSCILLATORS 2.5Vdc and 3.3Vdc - 32.768kHz Q-TECH CORPORATION Reflow Profile Embossed Tape and Reel Information For QT488 FEEDING (PULL) DIRECTION 1.750.1 2.00.1 4.00.1 O1.5 0.3.005 9.271 24.00.3 5Max 11.5 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 TEMP(*C) Ramp up (3C/s Max) 240 4.6990.1 250 O1.5 7.7470.1 160.1 225 Ramp down (6C/s Max) 200 225 min. 240 max. 175 O13.00.5 60s min. 150s max. 150 2.5 60s min. 120s max. 125 26 2.0 O1781 or O3301 100 75 60s min. 120s max. 50 25 120 0 0 20 40 60 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 vs. quantity: Environmental Specifications Reel size (Diameter in mm) Qty per reel (pcs) 178 330 150 800 Q-Tech Standard Screening/QCI (MIL-PRF55310) is available for all of our QT481 and QT488 series. Q-Tech can also customize screening and test procedures to meet your specific requirements. The QT481 and QT488 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, 125C with load 30 days, 70C, 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 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 Please contact Q-Tech for higher shock requirements 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 (Revision -, October 2010) 5 QT481 AND QT488 SERIES ULTRA-LOW CURRENT REAL TIME CLOCK OSCILLATORS 2.5Vdc and 3.3Vdc - 32.768kHz Q-TECH CORPORATION Output Waveform (Typical) Test Circuit Typical test circuit for CMOS logic + mA + Power supply - 4 + Vdc - Output 3 QT88 0.1F or 1 2 0.01F 10k 15pF (*) Ground Tristate Function (*) CL includes probe and jig capacitance The Tristate function on pin 1 has a built-in pull-up resistor typical 50k, so it can be left floating or tied to Vdd without deteriorating the electrical performance. Frequency vs. Temperature Curve Start up Time Type: QT88LD8M Vcc Input:3.3 Out Freq:32.768Khz +/-250ppm@ 0 to 200 deg.C 250 200 Frequency Stability (PPM) 150 100 50 0 -50 -100 -150 -200 -250 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 Temperature (C) Thermal Characteristics The heat transfer model in a hybrid package is described in figure 1. Heat spreading occurs when heat flows into a material layer of increased cross-sectional area. It is adequate to assume that spreading occurs at a 45 angle. The total thermal resistance is calculated by summing the thermal resistances of each material in the thermal path between the device and hybrid case. D/A epoxy Die D/A epoxy 45 45 Substrate Heat Hybrid Case R1 R2 Die D/A epoxy RT = R1 + R2 + R3 + R4 + R5 R3 Substrate R4 R5 D/A epoxy Hybrid Case (Figure 1) The total thermal resistance RT (see figure 2) between the heat source (die) to the hybrid case is the Theta Junction to Case (Theta JC) inC/W. T A CA * Theta junction to case (Theta JC) for this product is 30C/W. * Theta case to ambient (Theta CA) for this part is 100C/W. * Theta Junction to ambient (Theta JA) is 130C/W. T C T J JC Die Maximum power dissipation PD for this package at 25C is: * PD(max) = (TJ (max) - TA)/Theta JA * With TJ = 175C (Maximum junction temperature of die) * PD(max) = (175 - 25)/130 = 1.15W JA JC CA (Figure 2) 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 (Revision -, October 2010) 6