The **MHO+31FCG-R** is a specific part number belonging to the **MHO series** of high-precision, high-stability Crystal Oscillators manufactured by **Mercury Electronic**. Below is a detailed breakdown of its electronic characteristics and specifications. --- ### 1. General Specifications The MHO series is primarily designed for high-density surface mounting and offers excellent frequency stability over a wide temperature range. | Feature | Specification Details | | :--- | :--- | | **Component Type** | Crystal Oscillator (SPXO - Simple Packaged Crystal Oscillator) | | **Package Type** | Full-Size (14-pin DIP compatible) or Half-Size (8-pin DIP) | | **Output Type** | HCMOS / TTL Compatible | | **Mounting Type** | Through-Hole (R-series often denotes specific lead forming or RoHS compliance) | --- ### 2. Part Number Breakdown While specific manufacturer codes can vary slightly, here is the standard decoding for the MHO series: * **MHO:** Series name (Metal Hermetic Oscillator). * **+ (Plus Sign):** Usually indicates **RoHS Compliance** (Lead-Free). * **3:** Indicates the Operating Voltage. Typically **3.3V DC** (whereas '5' would be 5.0V). * **1:** Frequency Stability code. Usually represents **±100ppm** or **±50ppm** depending on the specific catalog year. * **F:** Frequency Control/Enable Function (often denotes Pin 1 is "No Connect" or "Tri-state"). * **CG:** Temperature Range code. "C" usually stands for **0°C to +70°C** (Commercial grade). * **R:** Packaging/Revision suffix (e.g., Radial, RoHS, or specific lead length). --- ### 3. Electrical Characteristics These parts are known for providing a steady clock signal for microprocessors and digital circuits. | Parameter | Typical Value | | :--- | :--- | | **Supply Voltage (Vdd)** | 3.3V DC (±10%) | | **Frequency Range** | Typically 1.0 MHz to 125.0 MHz (Specific to the crystal cut) | | **Output Load** | 15pF to 50pF | | **Duty Cycle** | 40/60% to 45/55% | | **Rise/Fall Time** | 6ns to 10ns (Max) | | **Current Consumption** | 15mA to 35mA (Frequency dependent) | --- ### 4. Pin Configuration For the standard 14-pin DIP footprint (where only 4 pins are actually used): 1. **Pin 1:** N/C (No Connection) or Tri-state (Output Enable/Disable). 2. **Pin 7:** Ground (Case Ground). 3. **Pin 8:** Output (Clock Signal). 4. **Pin 14:** Vcc (+3.3V). --- ### 5. Common Applications * **Networking:** Routers, Switches, and Hubs. * **Industrial:** PLCs and embedded controllers. * **Consumer Electronics:** Set-top boxes and digital clocks. * **Computing:** Motherboards and peripheral timing.