The **MHO+47TCD-R** refers to a high-precision, temperature-compensated crystal oscillator (TCXO) often utilized in telecommunications and high-frequency RF applications. This specific part number follows the naming convention of manufacturers like **MtronPTI**. --- ### 1. Technical Specifications The "MHO" series typically signifies a specific package and technology type (often CMOS/TTL compatible). Below is a breakdown of the technical characteristics generally associated with this part: | Parameter | Specification | | :--- | :--- | | **Type** | TCXO (Temperature Compensated Crystal Oscillator) | | **Frequency Stability** | High (typically ±1.0ppm to ±2.5ppm) | | **Supply Voltage** | Usually 3.3V or 5.0V (Part dependent) | | **Output Type** | CMOS / HCMOS | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **Package Style** | Through-hole (DIP-14 or DIP-8 compatible footprint) | --- ### 2. Breakdown of the Part Number While specific manufacturer codes vary slightly, the string **MHO+47TCD-R** can be decoded as follows: * **MHO:** The product series (Metal package, High-stability Oscillator). * **47:** Often denotes the specific frequency stability or voltage code (e.g., 47 might represent a specific stability over temperature). * **T:** Denotes **Temperature Compensation** circuitry. * **CD:** Often refers to the output type (CMOS/Digital) or specific pinout configuration. * **-R:** **RoHS Compliant** (Lead-free). --- ### 3. Key Components Inside the Part The MHO+47TCD-R is not a single component but an integrated module consisting of: 1. **Quartz Crystal:** The primary resonant element that determines the base frequency. 2. **Varactor Diode:** Used to "pull" the crystal frequency slightly to correct for deviations. 3. **Thermistor Network:** Senses the ambient temperature and provides a compensation voltage to the varactor. 4. **Buffer IC:** Amplifies the signal and ensures the output meets CMOS logic levels (0V to Vcc). --- ### 4. Common Applications Due to its high stability, this component is found in: * **Basestations:** For timing and synchronization in cellular networks. * **GPS Receivers:** Where precise frequency locking is required to acquire satellites. * **Test Equipment:** Frequency counters and signal generators. * **Radio Transceivers:** To prevent frequency drift during long periods of operation. ---