EH1400SJETTS-77.760M EH14 00 SJ ET RoHS TS -77.760M Series RoHS Compliant 5.0V Plastic J-Lead SMD HCMOS/TTL High Frequency Oscillator Nominal Frequency 77.760MHz Frequency Tolerance/Stability 100ppm Maximum Package Pin 1 Connection Tri-State (Disabled Output: High Impedance) Duty Cycle 50 10(%) Operating Temperature Range -40C to +85C ELECTRICAL SPECIFICATIONS Nominal Frequency 77.760MHz Frequency Tolerance/Stability 100ppm Maximum (Inclusive of all conditions: Calibration Tolerance at 25C, Frequency Stability over the Operating Temperature Range, Supply Voltage Change, Output Load Change, 1st Year Aging at 25C, Shock, and Vibration) Aging at 25C 5ppm/year Maximum Operating Temperature Range -40C to +85C Supply Voltage 5.0Vdc 10% Input Current 50mA Maximum (No Load) Output Voltage Logic High (Voh) 2.4Vdc Minimum with TTL Load, Vdd-0.4Vdc Minimum with HCMOS Load, IOH = -16mA Output Voltage Logic Low (Vol) 0.4Vdc Maximum with TTL Load, 0.5Vdc Maximum with HCMOS Load, IOL = +16mA Rise/Fall Time 4nSec Maximum (Measured at 0.8Vdc to 2.0Vdc with TTL Load; Measured at 20% to 80% of waveform with HCMOS Load) Duty Cycle 50 10(%) (Measured at 50% of waveform) Load Drive Capability 5TTL Load or 15pF HCMOS Load Maximum Output Logic Type CMOS Pin 1 Connection Tri-State (Disabled Output: High Impedance) Tri-State Input Voltage (Vih and Vil) +2.2Vdc Minimum to enable output, +0.8Vdc Maximum to disable output (High Impedance), No Connect to enable output. Absolute Clock Jitter 250pSec Maximum, 100pSec Typical One Sigma Clock Period Jitter 50pSec Maximum, 30pSec Typical Start Up Time 10mSec Maximum Storage Temperature Range -55C to +125C ENVIRONMENTAL & MECHANICAL SPECIFICATIONS ESD Susceptibility MIL-STD-883, Method 3015, Class 1, HBM: 1500V Fine Leak Test MIL-STD-883, Method 1014, Condition A (Internal Crystal Only) Flammability UL94-V0 Gross Leak Test MIL-STD-883, Method 1014, Condition C (Internal Crystal Only) Mechanical Shock MIL-STD-202, Method 213, Condition C Moisture Resistance MIL-STD-883, Method 1004 Resistance to Soldering Heat MIL-STD-202, Method 210, Condition K Resistance to Solvents MIL-STD-202, Method 215 Solderability MIL-STD-883, Method 2003 Temperature Cycling MIL-STD-883, Method 1010, Condtion B Vibration MIL-STD-883, Method 2007, Condition A www.ecliptek.com | Specification Subject to Change Without Notice | Rev E 3/12/2011 | Page 1 of 5 EH1400SJETTS-77.760M MECHANICAL DIMENSIONS (all dimensions in millimeters) 5.080 0.203 PIN CONNECTION 1 Tri-State (High Impedance) 2 Ground 3 Output 4 Supply Voltage 0.25 MIN 3 4 9.8 MAX 7.620 0.203 4.7 MAX 0.510 0.203 MARKING ORIENTATION 1 2 14.0 MAX LINE MARKING 1 ECLIPTEK 2 77.760M 3 XXXXXX XXXXXX=Ecliptek Manufacturing Identifier Suggested Solder Pad Layout All Dimensions in Millimeters 1.27 (X4) 3.0 (X4) Solder Land (X4) 5.8 3.81 All Tolerances are 0.1 www.ecliptek.com | Specification Subject to Change Without Notice | Rev E 3/12/2011 | Page 2 of 5 EH1400SJETTS-77.760M CLOCK OUTPUT TRI-STATE INPUT OUTPUT WAVEFORM & TIMING DIAGRAM VIH VIL VOH 80% or 2.0VDC OUTPUT DISABLE (HIGH IMPEDANCE STATE) 50% or 1.4VDC 20% or 0.8VDC VOL tPLZ Fall Time Rise Time tPZL TW T Duty Cycle (%) = TW/T x 100 Test Circuit for TTL Output Output Load Drive Capability RL Value (Ohms) CL Value (pF) 10TTL 5TTL 2TTL 10LSTTL 1TTL 390 780 1100 2000 2200 15 15 6 15 3 Oscilloscope Table 1: RL Resistance Value and CL Capacitance Value Vs. Output Load Drive Capability + + Power Supply _ Current Meter _ Supply Voltage (VDD) Frequency Counter Probe (Note 2) RL (Note 4) Output + Voltage Meter _ + 0.01F (Note 1) 0.1F (Note 1) Ground CL (Note 3) Power Supply _ No Connect or Tri-State Note 1: An external 0.1F low frequency tantalum bypass capacitor in parallel with a 0.01F high frequency ceramic bypass capacitor close to the package ground and VDD pin is required. Note 2: A low capacitance (<12pF), 10X attenuation factor, high impedance (>10Mohms), and high bandwidth (>300MHz) passive probe is recommended. Note 3: Capacitance value CL includes sum of all probe and fixture capacitance. Note 4: Resistance value RL is shown in Table 1. See applicable specification sheet for 'Load Drive Capability'. Note 5: All diodes are MMBD7000, MMBD914, or equivalent. www.ecliptek.com | Specification Subject to Change Without Notice | Rev E 3/12/2011 | Page 3 of 5 EH1400SJETTS-77.760M Test Circuit for CMOS Output Frequency Counter Oscilloscope + + Power Supply _ Current Meter _ Supply Voltage (VDD) Probe (Note 2) Output + Voltage Meter _ 0.01F (Note 1) 0.1F (Note 1) Ground CL (Note 3) No Connect or Tri-State Note 1: An external 0.1F low frequency tantalum bypass capacitor in parallel with a 0.01F high frequency ceramic bypass capacitor close to the package ground and VDD pin is required. Note 2: A low capacitance (<12pF), 10X attenuation factor, high impedance (>10Mohms), and high bandwidth (>300MHz) passive probe is recommended. Note 3: Capacitance value CL includes sum of all probe and fixture capacitance. www.ecliptek.com | Specification Subject to Change Without Notice | Rev E 3/12/2011 | Page 4 of 5 EH1400SJETTS-77.760M Recommended Solder Reflow Methods Critical Zone TL to T P Temperature (T) TP Ramp-up Ramp-down TL TS Max TS Min tL t S Preheat t 25C to Peak tP Time (t) Low Temperature Infrared/Convection 240C TS MAX to TL (Ramp-up Rate) Preheat - Temperature Minimum (TS MIN) - Temperature Typical (TS TYP) - Temperature Maximum (TS MAX) - Time (tS MIN) Ramp-up Rate (TL to TP) Time Maintained Above: - Temperature (TL) - Time (tL) Peak Temperature (TP) Target Peak Temperature (TP Target) Time within 5C of actual peak (tp) Ramp-down Rate Time 25C to Peak Temperature (t) Moisture Sensitivity Level 5C/second Maximum N/A 150C N/A 60 - 120 Seconds 5C/second Maximum 150C 200 Seconds Maximum 240C Maximum 240C Maximum 1 Time / 230C Maximum 2 Times 10 seconds Maximum 2 Times / 80 seconds Maximum 1 Time 5C/second Maximum N/A Level 1 Low Temperature Manual Soldering 185C Maximum for 10 seconds Maximum, 2 times Maximum. High Temperature Manual Soldering 260C Maximum for 5 seconds Maximum, 2 times Maximum. www.ecliptek.com | Specification Subject to Change Without Notice | Rev E 3/12/2011 | Page 5 of 5