The **MHO+44TFD-R** is a specific part number for a high-performance **Quartz Crystal Oscillator**, typically manufactured by companies like MtronPTI. These components are used to provide a precise clock signal for electronic circuits. Below is a detailed breakdown of its specifications and characteristics. --- ### 1. Technical Specifications The part number is alphanumeric, where each section represents a specific characteristic of the component. | Feature | Specification | Description | | :--- | :--- | :--- | | **Component Type** | XO (Crystal Oscillator) | A complete timing module (Crystal + IC). | | **Package Style** | 14-pin DIP (Full Size) | A metal "can" package with 4 active pins. | | **Output Type** | HCMOS / TTL | Compatible with high-speed CMOS and TTL logic. | | **Voltage Supply** | 5.0V DC | Standard operating voltage for legacy and industrial systems. | | **Frequency Range** | 1.0 MHz to 157 MHz | Custom frequencies available within this range. | | **Stability** | ±100 ppm | Standard frequency stability over temperature. | --- ### 2. Pin Configuration (Functional) Although it uses a 14-pin DIP footprint, only four pins are typically used for operation: * **Pin 1:** NC (No Connection) or Tri-state Enable/Disable. * **Pin 7:** Case Ground (GND). * **Pin 8:** Output (The clock signal). * **Pin 14:** Vcc (+5V Power Supply). --- ### 3. Key Features * **Hermetically Sealed:** The metal package is vacuum-sealed or filled with nitrogen to protect the quartz crystal from moisture and oxidation, ensuring long-term aging stability. * **Through-Hole Mounting:** Designed for traditional PCB mounting or socketing, making it robust for high-vibration environments. * **Tight Symmetry:** Provides a stable duty cycle (usually 40/60% or 45/55%), which is critical for synchronous digital circuits. --- ### 4. Applications The MHO series is commonly found in: 1. **Industrial Controls:** Reliability in harsh electrical environments. 2. **Telecommunications:** Network timing and synchronization. 3. **Microprocessor Clocks:** Providing the "heartbeat" for CPUs and Microcontrollers. 4. **Legacy Computing:** Replacement parts for older hardware requiring 5V logic. --- ### 5. Identification Logic (Part Number Breakdown) | Prefix | Package | Voltage/Symmetry | Stability | Lead Finish | | :--- | :--- | :--- | :--- | :--- | | **MHO** | **+** | **4** | **TFD** | **-R** | | Mtron High-Speed Osc | RoHS Compliant | 5.0V / 45/55% Symmetry | Stability/Temp Code | RoHS Compliant |