The **MHO+55FGG-R** is a specific part number typically associated with **MHO+ Series Crystal Oscillators** manufactured by providers like MtronPTI. These components are essential in electronic circuits for generating stable clock signals. Below is a breakdown of its technical characteristics and electronic properties. --- ### 1. General Specifications Table | Feature | Description | | :--- | :--- | | **Component Type** | Crystal Oscillator (XO) | | **Package Type** | 14-pin DIP (Dual In-line Package) / Full Size | | **Output Type** | HCMOS / TTL Compatible | | **Voltage Supply** | Typically 5.0V (Standard for MHO+ series) | | **Termination** | Through-hole (R suffix often denotes RoHS compliance) | --- ### 2. Key Electronic Parts & Functions #### A. The Quartz Crystal Blank The heart of the device is a precision-cut quartz crystal. When an electric field is applied, it vibrates at a specific frequency (Piezoelectric effect). In the MHO+ series, this blank is designed for high stability. #### B. The Integrated Circuit (IC) Inside the metal can, there is a small CMOS IC that performs two main tasks: * **Oscillation:** It maintains the mechanical vibration of the crystal. * **Output Buffering:** It converts the sine wave of the crystal into a clean square wave (Logic Level) that digital components like CPUs or FPGAs can understand. #### C. The Hermetic Package The "Full Size" metal housing is hermetically sealed. This protects the internal electronic parts from: * **Oxidation:** Prevents the silver or gold electrodes on the crystal from degrading. * **Moisture:** Ensures the frequency does not "drift" due to humidity changes. --- ### 3. Deciphering the Part Number (MHO+55FGG-R) While specific manufacturer coding can vary slightly, the MHO+ nomenclature generally breaks down as follows: * **MHO+**: Series name (High-speed CMOS/TTL, 5.0V). * **55**: Often represents the frequency stability (e.g., ±50ppm or ±100ppm). * **F**: Temperature Range (Usually 0°C to +70°C or similar commercial grade). * **GG**: Output symmetry/Duty cycle specifications. * **-R**: **RoHS Compliant**. This indicates the pins are lead-free. --- ### 4. Typical Application Circuit When using this part, it is standard practice to place a **0.01µF to 0.1µF bypass capacitor** between the Vcc (Pin 14) and Ground (Pin 7) to filter out electronic noise. ```mermaid graph LR VCC((+5V)) --> Pin14[Oscillator VCC] GND((GND)) --> Pin7[Oscillator GND] Pin14 --> Output[Pin 8: Square Wave Out] Output --> Logic[MCU / FPGA Clock Input] ``` ---