The **MHO+56FDD-R** is a high-performance, crystal-based clock oscillator typically manufactured by companies like **MtronPTI**. It is designed for precision timing in electronic circuits. Below is a detailed breakdown of its specifications, electronic composition, and characteristics. --- ### 1. General Specifications This component is part of a series of Voltage Controlled Crystal Oscillators (VCXO) or standard Clock Oscillators depending on the specific configuration. | Parameter | Specification (Typical) | | :--- | :--- | | **Package Type** | 14-pin DIP (Dual In-line Package) - 4 pins connected | | **Output Type** | CMOS / TTL Compatible | | **Operating Voltage** | 5.0V (Standard) | | **Frequency Range** | 1.000 MHz to 100.000 MHz (Varies by model) | | **Stability** | ±50 ppm or ±100 ppm (depending on suffix) | | **Temperature Range** | 0°C to +70°C (Commercial) or -40°C to +85°C (Industrial) | --- ### 2. Internal Electronic Parts The "MHO" series integrates several internal components into a single hermetically sealed metal package to ensure frequency stability and low noise. * **Quartz Crystal:** The heart of the part. A precision-cut quartz wafer that vibrates at a specific frequency when voltage is applied (Piezoelectric effect). * **Oscillator IC:** An integrated circuit that provides the gain needed to maintain the oscillations and converts the analog sine wave of the crystal into a digital square wave (CMOS/TTL). * **Load Capacitors:** Internal capacitors tuned to ensure the crystal oscillates at the exact intended frequency. * **Varactor Diode (if VCXO):** Allows the frequency to be tuned or modulated slightly by an external control voltage. --- ### 3. Pinout Configuration Although it uses a 14-pin DIP footprint, only four pins are usually functional: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | NC or Control | No Connection or Voltage Control (for VCXO models) | | **7** | GND | Case and Circuit Ground | | **8** | Output | The generated clock signal (Square Wave) | | **14** | Vcc | +5.0V Power Supply | --- ### 4. Part Number Decoding (Breakdown) The alphanumeric code provides specific details about the build: * **MHO:** Series designation (Metal Hermetic Oscillator). * **+:** Usually denotes RoHS compliance (lead-free). * **5:** 5.0V Operating Voltage. * **6:** Stability/Temperature code (often ±50ppm over commercial range). * **FDD:** Specific internal logic or output format (CMOS/TTL). * **R:** Packaging suffix (e.g., Tape & Reel or specific revision). --- ### 5. Common Applications * **Networking:** Providing the "heartbeat" for routers and switches. * **Industrial Control:** Timing for microprocessors and FPGAs. * **Legacy Systems:** Often found in older industrial computers or communication hardware requiring a 5V logic level.