The **MHO+15FFD-R** is a high-performance **Crystal Oscillator (XO)** produced by **MtronPTI**. It belongs to the MHO series, which is specifically designed for high-reliability applications, often involving defense, aerospace, or high-end industrial systems. --- ### 1. Key Technical Specifications | Feature | Specification Details | | :--- | :--- | | **Component Type** | Fixed Frequency Crystal Oscillator (XO) | | **Package Style** | 14-pin DIP (Dual In-line Package) - Full Size | | **Output Type** | HCMOS / TTL Compatible | | **Supply Voltage ($V_{cc}$)** | +5.0 VDC (Standard) | | **Frequency Range** | Typically ranges from 1.0 MHz to 100.0 MHz | | **Operating Temperature** | Often rated for -40°C to +85°C (Industrial/Military) | | **RoHS Status** | Compliant (indicated by the "-R" suffix) | --- ### 2. Part Number Breakdown (Nomenclature) To understand the specific capabilities, we can decode the part number structure: * **MHO**: Represents the MtronPTI product series (High-speed CMOS/TTL). * **+**: Indicates a specific design revision or enhanced voltage tolerance. * **1**: Usually denotes the supply voltage (1 = 5.0V). * **5**: Refers to the frequency stability (typically ±25ppm or ±50ppm depending on the specific datasheet revision). * **F**: Represents the symmetry/duty cycle (e.g., 40/60% or 45/55%). * **FD**: Designates the operating temperature range and specific output load. * **-R**: Indicates **RoHS Compliance** (Lead-Free). --- ### 3. Electronic Characteristics * **Logic Levels:** It provides a square wave output. It is designed to drive multiple TTL loads or high-speed CMOS inputs. * **Tri-state Functionality:** Many models in this series feature an "Output Enable/Disable" (Pin 1), allowing the output to be placed in a high-impedance state for testing or power saving. * **Stability:** These oscillators are "Fixed Frequency," meaning they rely on a high-quality quartz crystal blank to maintain a precise clock signal despite changes in temperature or voltage. --- ### 4. Common Applications Due to its 14-pin DIP through-hole form factor and high reliability, it is commonly found in: 1. **Legacy Industrial Equipment:** Replacing older timing components. 2. **Military Communications:** Where robust through-hole mounting is preferred over surface mount for vibration resistance. 3. **Test and Measurement:** Used as a stable base clock for frequency counters or signal generators. --- ### 5. Pin Configuration (Standard 14-Pin DIP) | Pin Number | Function | | :--- | :--- | | **1** | N/C or Output Enable (Tri-state) | | **7** | Case Ground / Negative Supply | | **8** | Output Signal | | **14** | Supply Voltage ($V_{cc}$) |