The **MHO+45TAD-R** is a specific series of high-precision crystal oscillators manufactured by **MtronPTI**. These components are critical for providing accurate timing and frequency signals in telecommunications and networking equipment. --- ## 1. Component Overview The MHO series generally refers to **TCXOs (Temperature Compensated Crystal Oscillators)** or high-stability **Clock Oscillators** in a specific metal DIP (Dual In-line Package) footprint. | Attribute | Description | | :--- | :--- | | **Manufacturer** | MtronPTI | | **Package Type** | 14-pin DIP (often 4 pins used) | | **Technology** | HCMOS/TTL Compatible | | **Function** | Provides a stable reference frequency | --- ## 2. Part Number Breakdown While MtronPTI part numbers vary slightly by era, the code typically breaks down as follows: 1. **MHO**: The series designation (Metal package, High reliability). 2. **+**: Often indicates RoHS compliance (lead-free). 3. **4**: Represents the voltage (e.g., 4 = 5.0V or specific stability tiers). 4. **5**: Represents the operating temperature range (e.g., -40°C to +85°C). 5. **TAD**: These letters usually define the **Stability** and **Output Type** (HCMOS). 6. **R**: Indicates RoHS Compliance or specific Reel packaging. --- ## 3. Technical Specifications Typical technical characteristics for this class of oscillator include: ### Electrical Characteristics * **Frequency Range:** Usually ranges from 1.000 MHz to 150.000 MHz (customer specified). * **Supply Voltage ($V_{cc}$):** Typically 5.0V DC or 3.3V DC depending on the sub-model. * **Frequency Stability:** High stability, often $\pm 25$ ppm to $\pm 100$ ppm across the temperature range. * **Output Load:** 15pF to 50pF (HCMOS/TTL). ### Pin Configuration (Standard 14-pin DIP) | Pin Number | Function | | :--- | :--- | | **Pin 1** | N/C or Tri-state Control (Enable/Disable) | | **Pin 7** | Case Ground | | **Pin 8** | Output Signal | | **Pin 14** | Supply Voltage ($V_{cc}$) | --- ## 4. Key Features & Applications * **Hermetically Sealed:** The metal "can" package protects the quartz crystal from humidity and atmospheric interference. * **Tight Tolerance:** Designed for applications where timing drift must be minimized. * **Applications:** * Network Routers and Switches. * Industrial Control Systems. * Microprocessor Clocks. * Data Communications. ---