M55310/21
5Pages

Catalog excerpts

INCH-POUND MIL-PRF-55310/21G 14 November 2008 SUPERSEDING MIL-PRF-55310/21F 09 June 2008 PERFORMANCE SPECIFICATION SHEET OSCILLATOR, CRYSTAL CONTROLLED, TYPE 1 (CRYSTAL OSCILLATOR (XO)), 1.0 MHz THROUGH 60.0 MHz, HERMETIC SEAL, SQUARE WAVE, TTL This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the product described herein shall consist of this specification sheet and MIL-PRF-55310. FIGURE 1. Dimensions and configuration.

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2. Metric equivalents are given for general information only. 3. Unless otherwise specified, tolerances are ±.005 (0.13 mm) for three place decimals and ±.02 (0.5 mm) for two place decimals. 4. The leads shall be symmetrical with respect to the package so that the spacing between the first lead and the end of the package shall be equidistant on each side. 5. Unit shall meet all requirements with pin 13 and pin 20 simultaneously tied to supply voltage. 6. Lead numbers are for reference only and need not be marked on unit. 7. All pins with NC function may be connected internally and are...

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MIL-PRF-55310/21G Supply voltage: 5.0 V dc ±10 percent. Input current: At designated supply voltage (see table I). Output frequency: Frequency as designated at time of acquisition (see table I). Output voltage: At designated TTL load (see table I). Logic 1: 2.4 V dc, minimum. Logic 0: 0.5 V dc, maximum. Rise and fall times: See table I. Duty cycle: See table I. Initial accuracy at reference temperature (up to 30 days after shipment): See table I. Initial frequency-temperature accuracy (one-half temperature cycle): Verification applicable. 1/ Frequency-temperature tolerance (one-half...

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TABLE I. Dash numbers and operating characteristics. 1/ Maximum input current for no load condition. Actual configuration of TTL loads must be added to determine power supply requirements. 2/ A TTL unit load is defined as: 1.6 mA sink, 0.04 mA source, and 2 pF capacitance. Frequency-voltage tolerance: ±4 ppm maximum for a ±10 percent change in supply voltage. Measurements taken at reference temperature and operating temperature range end points. Frequency aging: Measurements shall be taken at +70°C ±0.2°C at intervals of not more than every 72 hours for 30 days minimum (see table I). ±10...

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MIL-PRF-55310/21G Reflow soldering: Reflow soldering of the unit at +230°C ±10°C for 15 seconds shall not degrade the performance. Reflow soldering temperatures shall not be applied to the case but to the ribbon leads only. Part or Identifying Number (PIN): Consists of “M” prefix followed by specification sheet number, a dash and coded alphas, and numeric number. See example: EXAMPLE M55310/21- M prefix and specification sheet number Product level (S, B, or C) Dash number (see table I) Operating temperature range (A, B, or C) (see table I) Frequency Reference documents. In addition to...

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