The **MHO+64TDD-R** is a specific high-performance crystal oscillator (XO) commonly used in telecommunications, networking, and precision timing applications. It is part of the **MHO+ series** manufactured by companies like **MtronPTI**. --- ### 1. Technical Specifications The part number follows a specific nomenclature that defines its electronic characteristics: | Parameter | Specification | Description | | :--- | :--- | :--- | | **Type** | Crystal Oscillator (XO) | A fixed-frequency clock source. | | **Output Type** | CMOS / HCMOS | Provides a digital square wave output compatible with standard logic. | | **Package Size** | 14-pin DIP (Full Size) | A metal "Through-Hole" package (often rectangular). | | **Supply Voltage** | 5.0 VDC | Standard operating voltage for the MHO series. | | **Frequency Range** | 1.0 MHz to 156 MHz | Depending on the specific sub-variant. | | **Stability** | ±100 ppm to ±25 ppm | Frequency stability over temperature (D-code specific). | --- ### 2. Breakdown of the Part Number The alphanumeric string defines the component's environmental and electrical limits: * **MHO+**: The series designation (High-speed CMOS, 5.0V, Metal package). * **64**: Represents the frequency stability and operating temperature range (typically $\pm$50ppm over -40°C to +85°C). * **T**: Indicates "Tri-state" functionality. This allows the output pin to enter a high-impedance state, effectively disconnecting it from the circuit. * **DD**: Specific internal manufacturing or frequency codes. * **R**: RoHS Compliant (Lead-free). --- ### 3. Key Electronic Features 1. **Tri-State Enable/Disable:** Pin 1 is usually the control pin. When active, the oscillator outputs the clock; when disabled, it saves power and allows for bus-sharing. 2. **Hermetic Sealing:** The metal "can" (DIP-14) is resistance-welded to protect the quartz crystal from moisture and atmospheric pressure changes, ensuring long-term aging stability. 3. **Low Jitter:** Designed for high-speed data transmission where timing precision is critical to avoid data errors. --- ### 4. Common Pinout (DIP-14 Style) Most MHO+ series oscillators follow this standard configuration: | Pin Number | Function | | :--- | :--- | | **1** | N/C or Tri-state Control | | **7** | Case Ground (GND) | | **8** | Output (Clock Signal) | | **14** | Supply Voltage (+Vcc) | ---