The **MHO+72TAAD-R** is a specific part number typically associated with **Quartz Crystal Oscillators**, often manufactured by companies like MtronPTI. These components are used to provide precise timing signals in electronic circuits. Below is a detailed breakdown of its specifications and characteristics. --- ### 1. General Specifications The part number follows a specific nomenclature that defines its physical and electrical properties. | Parameter | Specification | | :--- | :--- | | **Component Type** | Crystal Clock Oscillator | | **Package Style** | 14-pin DIP (Dual In-line Package) - Half Size | | **Output Type** | CMOS / TTL Compatible | | **Supply Voltage** | Typically 5.0V or 3.3V (Depending on the "72" series) | | **RoHS Status** | "R" suffix indicates Lead-Free / RoHS Compliant | --- ### 2. Breakdown of the Part Number While manufacturers vary slightly, the code typically breaks down as follows: * **MHO:** Series designation (Metal Half-size Oscillator). * **+:** Usually denotes an extended temperature range or specific stability rating. * **72:** Voltage and Stability code. (Often indicates 5.0V operation with specific ppm stability). * **T:** Temperature Grade (Typically denotes -40°C to +85°C Industrial range). * **AA:** Internal factory code for frequency or specific output characteristics. * **D:** Duty Cycle (Often 40/60% or 45/55%). * **-R:** RoHS Compliant. --- ### 3. Key Electronic Features #### Frequency Stability These oscillators are designed to maintain a very tight frequency tolerance, usually measured in parts per million (ppm). This ensures that digital clocks or microprocessors remain synchronized over time and temperature fluctuations. #### Logic Compatibility The **TAAD** designation often implies that the output is compatible with both **TTL** (Transistor-Transistor Logic) and **CMOS** (Complementary Metal-Oxide-Semiconductor) circuits, making it versatile for older and modern hardware. #### Physical Construction * **Hermetic Seal:** The crystal is housed in a metal "can" (DIP-8/14 style) to protect it from humidity and atmospheric contaminants. * **Integrated Circuit:** Inside the metal can, there is both a quartz crystal blank and a small IC that provides the oscillation and output buffering. --- ### 4. Applications The MHO+72TAAD-R is commonly found in: * **Industrial Controllers:** Where temperature stability is critical. * **Embedded Systems:** Providing the primary clock source for MCUs. * **Legacy Hardware:** Maintenance and repair of telecommunications or computing equipment using through-hole technology. ---