H-Type Fixed-Frequency Crystal Oscillator (XO) The H-Type Fixed-Frequency Crystal Oscillator (XO) is a hybrid clock oscillator designed for use in CMOS and TTL applications. It is available in commercial or industrial temperature ranges and can be ordered with a tristate option. This option allows the output of the oscillator to be placed in a high-impedance state for boardlevel testing. The H-Type is available in a surface-mount configuration and is packaged in a hermetically sealed metal case which is grounded to minimize RF radiation. The pin through-hole version is compatible with an 8-pin DIP footprint. Typical applications for the H-Type oscillator are to provide clock signals for digital signal processing (DSP) chips and microprocessors. Tight stabilities compatible with SONET and STRATUM 4 telephony requirements are available. Features z z z z z z z Industry Standard Pinout Stability to 20 ppm TTL or CMOS Choice of Temperature Range Tri-State Output Option Hermetically Sealed Metal Package Tape and Reel Configuration Mechanical Characteristics Parameter Mechanical Shock Mechanical Vibration Temperature Cycle Gross Leak Test Fine Leak Test Seal Strength Bend Test Marking ESD Description MIL-STD-883C, Method 2002.3, Condition A. MIL-STD-883C, Method 2007.1, Condition A. MIL-STD-883C, Method 1010, Condition A. All Units 100% leak tested in deionized water. All Units test to MIL-STD-883C, Method 1014, Condition A. 2 lbs. maximum force perpendicular to top and bottom. MIL-STD-202E, Method 211A, Condition C. MIL-STD-202E, Method 215. MIL-STD-883D, Method 3015; 1000v min, HBM; 500v CDM Electrical Characteristics Parameter Symbol Min Typ Max Unit 3.3V 5.0V 3.3V 5.0V 3.3V 5.0V Frequency Range Temperature Range f0 1 to 80 Mhz TO 0 to 70 or -40 to 85 °C ±25, ±50 or ±100 ppm 3.3 (±10%) or 5.0 (±10%) V Stability Options1 Supply Voltage V DD Supply Current 1 to 20 MHz 21 to 80 MHz I DD Output Levels High Low Output Rise/Fall Time2 1 to 20 MHz 21 to 80 MHz V OH V OL 3.0 t R/F Tri-State Out Enable Out Disable (High Imp.) Output Symmetry 4.5 2.0 - 4.0 45 - 10 35 15 50 - 0.3 0.5 - 5 4 8 6 - 0.5 0.8 50 55 mA V ns V % t SU 3 ms Output Load Options - TTL or CMOS, 15 or 50 pF - Storage Temperature TS Start-up Time -55 - 125 °C 1 Inclusive of calibration tolerance at 25°C, over the operating temperature range, and aging. 2 Current consumption is typically 0.4 mA/MHz above 20 MHz frequencies. 3 Transition times are measured between 10% and 90% of VDD Outline Drawing H-type - Gull Wing H-type - Through Hole Standard Frequencies* 1.536 1.544 2.000 3.6864 10.000 12.352 12.500 14.3182 16.667 18.432 20.000 20.480 25.000 29.4912 30.000 31.000 32.768 33.000 34.368 35.000 35.500 37.056 37.632 40.000 46.796 50.000 51.840 55.296 * Other Frequencies available upon request. 4.096 16.000 24.000 32.000 35.200 44.236 66.000 4.9152 16.384 24.576 32.256 35.280 44.736 75.000