The **MHO+74TCD-R** belongs to a specific category of high-precision electronic components, typically classified as an **Oven Controlled Crystal Oscillator (OCXO)** or a high-stability **Clock Oscillator**, often manufactured by companies like MtronPTI. --- ### 1. Technical Specifications This component is designed for applications requiring extreme frequency stability over varying temperatures. Below are the typical technical characteristics for this series: | Parameter | Typical Value / Range | | :--- | :--- | | **Component Type** | Crystal Oscillator (OCXO/TCXO derivative) | | **Output Type** | CMOS / TTL Compatible | | **Package Style** | 14-pin DIP (Full size) or 4-pin square | | **Voltage Supply** | 3.3V or 5.0V DC | | **Frequency Stability** | ±50ppm to ±100ppm (Standard) | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **RoHS Status** | Compliant (indicated by the 'R' suffix) | --- ### 2. Breakdown of the Part Number While manufacturers vary slightly, the nomenclature usually breaks down as follows: * **MHO:** Series prefix (typically indicating a Metal Hermetic package / High Output). * **74:** Internal code for package size and pin configuration (e.g., 5x7mm SMD or 14-pin DIP). * **T:** Temperature range indicator (often representing Wide/Industrial temperature). * **C:** Symmetry/Duty Cycle specification (e.g., 45/55%). * **D:** Voltage code (frequently 3.3V). * **-R:** **RoHS Compliant.** This indicates the part is lead-free and meets environmental safety standards. --- ### 3. Key Internal Features 1. **Quartz Crystal Resonator:** The heart of the part, providing the fundamental mechanical vibration. 2. **Compensation Circuitry:** Unlike standard crystals, this part includes active circuitry to maintain frequency despite power fluctuations. 3. **Hermetic Sealing:** The "Metal" designation implies the internal components are sealed in a vacuum or inert gas to prevent aging and moisture interference. --- ### 4. Common Applications Due to its stability, the MHO+74TCD-R is commonly found in: * **Networking Gear:** Routers, switches, and base stations. * **Test & Measurement:** Oscilloscopes and signal generators. * **Industrial Control:** Embedded systems requiring precise timing for automation. * **Data Communications:** Synchronizing high-speed data transfers. ---