Based on the part number provided, the **MHO+27FGG-R** belongs to a series of high-precision **Crystal Oscillators**, typically manufactured by companies like MMD Monitor/Quartztek (now part of ILSI/Abracon). Below is a detailed breakdown of its electronic specifications and characteristics. --- ### 1. General Specifications The "MHO" series generally refers to **Metal Half-Size** (DIP-8) or standard clock oscillators known for their ruggedness and stability in industrial applications. | Feature | Specification | | :--- | :--- | | **Package Type** | Half-Size DIP (4-pin) or SMD equivalent | | **Output Type** | HCMOS / TTL Compatible | | **Frequency Range** | Usually fixed (the "27" often denotes 27.000 MHz) | | **Operating Voltage** | Typically 5.0V or 3.3V (Check specific datasheet) | | **Stability** | Usually ±25ppm to ±100ppm | --- ### 2. Part Number Deciphering While naming conventions vary slightly by manufacturer, the suffix **FGG-R** usually breaks down as follows: * **MHO+**: The series prefix (High-speed CMOS/TTL Oscillator). * **27**: Base frequency (27.000 MHz). * **F**: Often represents the Frequency Stability (e.g., ±100ppm or ±50ppm). * **GG**: Operating Temperature Range (Commonly -40°C to +85°C for industrial grade). * **-R**: RoHS Compliant (Lead-free). --- ### 3. Pin Configuration For a standard MHO series oscillator in a 4-pin Half-Size DIP package, the pinout is typically: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | NC or E/D | No Connection or Output Enable/Disable | | **4** | GND | Ground | | **5** | Output | The generated clock signal | | **8** | Vcc | Supply Voltage (e.g., +5VDC) | --- ### 4. Key Electronic Characteristics * **Symmetry/Duty Cycle:** Usually 40/60% or 45/55%. * **Rise/Fall Time:** Fast transition times (typically < 10ns) to support high-speed digital logic. * **Load Capacitance:** Standard 15pF to 50pF drive capability. * **Hermetic Seal:** These parts are usually housed in a metal can, resistance-welded to provide protection against moisture and atmospheric interference. --- ### 5. Applications The 27.000 MHz frequency is a standard clock rate for: 1. **Video Processing:** Used in MPEG decoders and digital video interfaces. 2. **Networking:** Base clock for Ethernet or USB controllers. 3. **Microcontrollers:** Providing an external master clock for high-stability timing.