The **MHO+42TAAD-R** is a specific part number typically associated with **Crystal Oscillators**, manufactured by companies like MtronPTI. These components are critical for providing a stable clock signal in digital circuits. --- ### 1. Technical Specifications Below is a breakdown of the typical characteristics for this series: | Parameter | Specification | | :--- | :--- | | **Component Type** | Crystal Oscillator (XO) | | **Package / Case** | 14-pin DIP (Full size) or 8-pin DIP (Half size) equivalent | | **Output Type** | CMOS / TTL Compatible | | **Voltage Supply** | Usually 5.0V (Standard for MHO series) | | **Frequency Stability** | Typically ±100ppm or ±50ppm (varies by suffix) | | **Operating Temperature** | 0°C to +70°C (Standard commercial grade) | | **RoHS Status** | Compliant (Indicated by the "R" suffix) | --- ### 2. Part Number Breakdown The alphanumeric code follows a specific nomenclature used by manufacturers: 1. **MHO**: Represents the series (Metal-can, High-reliability Oscillator). 2. **+**: Often indicates a specific revision or lead-free process. 3. **42**: Refers to the technical configuration (Frequency stability and Voltage). 4. **T**: Usually denotes "TTL/CMOS" output compatibility. 5. **AAD**: Internal factory codes for frequency and specific customer requirements. 6. **R**: **RoHS Compliant**. This confirms the part is manufactured without hazardous substances like lead. --- ### 3. Key Functions and Applications The MHO+42TAAD-R acts as the "heartbeat" of an electronic system. Its primary roles include: * **Clock Generation:** Providing a precise square wave frequency to microprocessors or FPGAs. * **Timing Synchronization:** Ensuring that data transmission between different integrated circuits (ICs) happens at the correct intervals. * **Common Applications:** * Legacy industrial control systems. * Network routers and switches. * Test and measurement equipment. * Embedded systems requiring a robust metal-can package for EMI shielding. --- ### 4. Typical Pinout (14-pin DIP Package) While it occupies a 14-pin footprint, only 4 pins are usually active: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | NC or Tri-state | No connection or Output Enable/Disable | | **7** | GND | Circuit Ground | | **8** | Output | The generated clock signal | | **14** | Vcc | Positive Power Supply (+5V) |