The **MHO363FCG-R** is a high-performance, oven-controlled crystal oscillator (OCXO) manufactured by **Mercury Electronic**. It is designed for applications requiring extreme frequency stability and low phase noise. --- ## 1. Core Specifications The following table outlines the primary electronic characteristics of the MHO363 series: | Parameter | Specification Details | | :--- | :--- | | **Component Type** | Oven Controlled Crystal Oscillator (OCXO) | | **Frequency Range** | Typically 10.0 MHz to 40.0 MHz | | **Supply Voltage ($V_{cc}$)** | +3.3V or +5.0V DC | | **Output Waveform** | CMOS / HCMOS | | **Package Style** | Through-hole (DIP-14 compatible footprint) | | **Operating Temperature** | -40°C to +85°C (Standard Industrial) | | **Stability vs Temp** | $\pm$10 ppb to $\pm$100 ppb | --- ## 2. Key Electronic Features ### Oven Control Mechanism The "MHO" designation signifies that the crystal is housed inside a miniature temperature-controlled oven. * **Heating Element:** Internal circuitry maintains the quartz crystal at a specific "turning point" temperature where its frequency-to-temperature slope is near zero. * **Warm-up Time:** Requires a short duration (usually < 3 minutes) to reach stable operating temperature. ### Frequency Adjustment (Voltage Control) The suffix "-R" often denotes specific RoHS compliance or a particular revision. Most units in this series include an electronic frequency tuning (EFC) pin: * Allows the user to apply a small control voltage ($V_c$) to fine-tune the output frequency. * Compensates for long-term aging of the crystal. --- ## 3. Pin Configuration For the standard 14-pin DIP package layout used by the MHO363 series: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | $V_c$ / N.C. | Voltage Control (Tuning) or No Connection | | **7** | GND | Ground Case / Circuit | | **8** | Output | HCMOS/CMOS Square Wave Output | | **14** | $V_{cc}$ | Supply Voltage Input | --- ## 4. Typical Applications Due to its high stability, the MHO363FCG-R is commonly found in: 1. **Telecommunications:** Base stations (LTE, 5G) and small cells. 2. **Instrumentation:** Frequency counters and signal generators. 3. **Network Timing:** Synchronous Ethernet (SyncE) and IEEE 1588 PTP clocks. 4. **Satellite Comms:** Up/Down converters.