The **MHO+53FAD-R** is a high-performance **Crystal Oscillator (XO)** manufactured by MtronPTI. It belongs to the MHO+ series, which is specifically designed for high-reliability applications, often involving military or aerospace standards. --- ## 1. Technical Specifications The part number follows a specific coding structure that defines its electronic characteristics: | Parameter | Specification | Description | | :--- | :--- | :--- | | **Type** | Crystal Oscillator | Fixed frequency reference source | | **Output Type** | HCMOS / TTL | High-speed CMOS / Transistor-Logic compatible | | **Voltage Supply** | 5.0 V | Operates on a standard 5V DC rail | | **Package Style** | 14-pin DIP (Full Size) | Through-hole metal canister package | | **Stability** | ±100 ppm (Typical) | Frequency deviation over temperature/time | | **Operating Temp** | -40°C to +85°C | Industrial temperature grade range | --- ## 2. Key Components & Construction The MHO+53FAD-R is an integrated timing module consisting of: 1. **Quartz Crystal Resonator:** The heart of the part, providing the fundamental frequency vibration. 2. **Oscillator IC:** An internal circuit that maintains the oscillation and buffers the output signal. 3. **Bypass Capacitance:** Internal filtering to reduce power supply noise. 4. **Hermetic Metal Header:** The electronic components are sealed in a vacuum or inert gas to prevent environmental degradation (moisture/oxidation). --- ## 3. Pin Configuration Since this is a standard 14-pin DIP footprint (though only 4 pins are usually active), the layout is typically as follows: | Pin Number | Function | Description | | :--- | :--- | :--- | | **Pin 1** | N/C or Tri-State | No connection or Output Enable/Disable | | **Pin 7** | GND | Circuit Ground | | **Pin 8** | Output | Frequency signal output (HCMOS/TTL) | | **Pin 14** | Vcc | +5.0V Power Supply | --- ## 4. Common Applications Due to its robust metal packaging and 5V operation, this part is commonly used in: * **Legacy Computing:** Older industrial motherboards requiring TTL logic. * **Military/Aerospace:** Applications requiring high-reliability hermetic seals. * **Telecommunications:** Clock distribution in base stations. * **Test Equipment:** Frequency reference for oscilloscopes and signal generators. ---