## MHO+13TFD-R: Technical Overview The **MHO+13TFD-R** is a specific series of **Crystal Oscillators** typically manufactured by companies like **MtronPTI**. These components are precision frequency control devices used to provide a stable clock signal for electronic circuits. --- ### 1. Key Technical Specifications Based on the standard nomenclature for the MHO series, here are the primary electrical characteristics: | Parameter | Value / Description | | :--- | :--- | | **Component Type** | XO (Crystal Oscillator) | | **Package Style** | 14-pin DIP (Full Size) or 8-pin DIP (Half Size) | | **Output Type** | HCMOS / TTL Compatible | | **Supply Voltage ($V_{cc}$)** | Typically 5.0V (Standard for "+" series) | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **Stability** | ±100ppm, ±50ppm, or ±25ppm (depending on sub-coding) | | **Frequency Range** | Typically 1.000 MHz to 150.000 MHz | --- ### 2. Breakdown of the Part Number The alphanumeric string defines the specific "build" of the oscillator: * **MHO**: Indicates the product series (Metal package, Thru-hole Oscillator). * **+**: Usually denotes a specific supply voltage (5.0V) and RoHS compliance. * **13**: Refers to the **Stability** and **Temperature Range**. "13" often signifies ±100ppm stability over the industrial temperature range (-40°C to +85°C). * **T**: Indicates the output load type (e.g., TTL/CMOS compatible). * **FD**: Defines the **Duty Cycle** (typically 40/60% or 45/55%). * **-R**: Denotes **RoHS Compliance** (Lead-free). --- ### 3. Physical Construction The device is housed in a **hermetically sealed metal package**. This design offers several advantages: 1. **EMI Shielding:** The metal casing reduces electromagnetic interference. 2. **Environmental Protection:** Protects the internal quartz crystal from moisture and atmospheric pressure changes. 3. **Durability:** High resistance to mechanical shock and vibration. --- ### 4. Common Applications These oscillators are generally found in legacy industrial equipment and high-reliability systems: * **Networking Gear:** Hubs, routers, and switches. * **Industrial Control:** Programmable Logic Controllers (PLCs). * **Data Communications:** Modems and signal processing units. * **Embedded Systems:** Providing master clocks for microprocessors. --- ### 5. Circuit Connection Diagram In a standard 14-pin DIP package, only 4 pins are usually active: ```text Pin 1: NC (No Connection) or Tri-state Enable Pin 7: Case Ground Pin 8: Output (Frequency Signal) Pin 14: +5.0V DC (Supply) ```