XE20 - 100 Series (TTL), 5 V High Reliability Hybrid Microcircuit Crystal Oscillators ( Similar to M55310/09 ) Ruggedized 4 Point Crystal Mount Tristate Output Option Radiation Tolerant to 10K Rads 100% Screening Options Low Phase Noise Hermetically Sealed Metal Package ECCN: EAR99 High Shock & Vibration Applications Navigation Systems Aerospace Instrumentation Benign Space Applications Gun Launched Munitions Package Specifications & Outline: • • • • • • Header & Leads Material: Kovar Cover Material: Nickel Seal: Hermetic – Resistance Welded Weight: 1.0 Gms typical, 1.2 Gms Max. o Thermal Resistance, Junction to Case ( θJC ): 30 C / Watt o Lead Soldering, Temp./Time: 260 C, 10 Secs. Max. E/D ( Enable/Disable ) Input: A “Low” level at the input disables the Output into a high impedance state. E/D Input has internal pull-up. It can be left floating or connected to Vdd. Header & Lead Finish: 50 to 80 μ inches gold over 100 to 250 μ inches nickel Hot Solder Tinning per MIL-PRF-55310 is optional at additional cost. Contact Xsis Electronics at [email protected] for any special requirements. ORDERING INFORMATION ( Please build your part number from options below ) : o Output Frequency 5.0 V TTL, + 50 PPM over -55 C to +125 C, Tristate Output, 883B Screening and 24.000 MHz Tristate Options G = Tristate Blank = No Tristate HI-REL Screening is similar to * Frequency Stability Options 5, 6 & 7 are not available for all operating temperature ranges. Xsis Electronics, Inc., 12620 W. 63rd St., Shawnee, KS 66216 883B = MIL Screening H = HI-REL Screening Blank = No Screening

XE20 - 100 Series (TTL), 5 V High Reliability Hybrid Microcircuit Crystal Oscillators ( Similar to M55310/09 ) Electrical Specifications: Parameter Specification Limits Output Frequency Range Frequency Stability Vs Temperature See Ordering Information on Page 1 Operating Temperature Range See Ordering Information on Page 1 Input Current (no Load ) Output Waveform Square Wave, TTL Compatible Output Duty Cycle Output High Level Output Load Rise & Fall Times ( Typical Load ) E/D Input > 3.5V or Open : Normal Output E/D Input < 0.8V: High Impedance Enable/Disable ( E/D) Start-Up Time Phase Jitter...

XE20 - 100 Series (TTL), 5 V High Reliability Hybrid Microcircuit Crystal Oscillators ( Similar to M55310/09 ) Packaging: ESD protective conductive foam tray Junction to case Thermal Constant ( θJC ): 28 C / Watt o Junction to Ambient ( Device floating in free air) Thermal Constant ( θJA ): 135 C / Watt Hi-Rel Screening: When HI-REL option is selected, Xsis Oscillators are subjected to 100% screening similar to Class “S” screening in accordance with MIL-PRF-55310. Refer to www.xsis.com for additional details about HI-REL screening. Typical Phase Noise (dbc/Hz): Output Frequency Environmental...

XE20 - 100 Series (TTL), 5 V High Reliability Hybrid Microcircuit Crystal Oscillators ( Similar to M55310/09 ) TTL Test Circuit – 10 TTL Loads Power Supply High Level CL = 20 PF, Includes Probe Capacitance RL = 270 Ohms; RS = 6 K Ohms All Diodes are 1N4148 or Equivalent E/D ( Enable/Disable ) Input has an internal pull-up resistor. It can be left floating or connected to Vdd. Typical Freq. Stability Vs. Temperature 50 Xsis Electronics, Inc., 12620 W. 63rd St., Shawnee, KS 66216 Page 4 of 4 Tel. 913-631-0448 Fax. 913-631-1170, www.xsis.com, email xsis@xsis.