The **MHO+43FDG-R** is a specific model within the category of crystal oscillators, typically manufactured by companies like **Mercury Electronic**. These components are critical for providing a stable clock signal in digital circuits. --- ### 1. Component Overview The "MHO" series generally refers to **Metal Hybrid Oscillators**. These are active components, meaning they require a power supply to generate an oscillating signal, unlike passive quartz crystals. ### 2. Technical Specifications Based on the standard nomenclature for this series, here are the likely technical parameters: | Parameter | Specification | | :--- | :--- | | **Type** | Clock Oscillator (SPXO) | | **Package Style** | 14-pin DIP (Full size) or 8-pin DIP (Half size) Metal Can | | **Frequency Range** | Typically 1.0 MHz to 150 MHz (Model specific) | | **Output Type** | TTL / HCMOS Compatible | | **Operating Voltage** | Usually 5.0V (Standard for FDG series) | | **Frequency Stability** | ±25ppm to ±100ppm | | **Termination** | Through-hole (R suffix often denotes RoHS compliance) | --- ### 3. Pin Configuration (Typical 14-pin DIP) Though it has 14 pins physically, most are missing or "No Connect" (NC) to simplify the PCB layout. Only four pins are functional: 1. **Pin 1:** NC (No Connection) or Tri-state Control. 2. **Pin 7:** Ground (GND). 3. **Pin 8:** Output (Clock Signal). 4. **Pin 14:** Supply Voltage (Vcc). --- ### 4. Part Number Breakdown The alphanumeric string provides specific details about the component's build: * **MHO:** Series prefix (Metal Hybrid Oscillator). * **4:** Accuracy/Stability code (often implies ±50ppm or ±100ppm depending on the datasheet version). * **3:** Voltage code (typically indicates 5.0V or 3.3V operation). * **FDG:** Specifically refers to the output logic type (Fast CMOS/TTL) and duty cycle (45/55%). * **-R:** Indicates **RoHS Compliance** (Lead-free). --- ### 5. Application Areas * **Microprocessors:** Providing the base clock for CPUs. * **Networking:** Timing for Ethernet and switching hardware. * **Industrial:** Controlling PLCs and automation timing. * **Legacy Hardware:** Often used in older computer repairs and industrial boards due to the DIP package.