The **MHO+74TAAD-R** is a high-performance **Quartz Crystal Oscillator** manufactured by MtronPTI. This specific part belongs to the MHO series, which is characterized by its 14-pin DIP (Dual In-line Package) compatible metal canister, often used in industrial and military-grade applications due to its durability. --- ### 1. Technical Specifications Below are the primary technical parameters for the MHO+74TAAD-R: | Parameter | Specification | | :--- | :--- | | **Package Type** | 14-pin DIP Compatible (Full Size) | | **Frequency Range** | Typically customized (Standard range 1.0 MHz to 150.0 MHz) | | **Output Logic** | HCMOS/TTL | | **Operating Voltage** | 5.0V DC | | **Frequency Stability** | ±100 ppm (Standard for this series) | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **RoHS Status** | RoHS Compliant | --- ### 2. Key Components & Construction The device is an "Active Oscillator," meaning it contains more than just a raw crystal. Internally, it consists of: * **Quartz Crystal Blank:** The mechanical vibrating element that determines the base frequency. * **Oscillator IC:** A CMOS integrated circuit that provides the necessary amplification and feedback to sustain oscillation. * **Metal Encapsulation:** A hermetically sealed metal "can" that protects the internal components from moisture and electromagnetic interference (EMI). * **Bypass Capacitor:** Internal decoupling to reduce power supply noise. --- ### 3. Pin Configuration The MHO series follows a standard 4-pin layout within a 14-pin footprint: 1. **Pin 1:** NC (No Connection) or Tri-state Control (Enable/Disable). 2. **Pin 7:** Case Ground (Vss). 3. **Pin 8:** Output (The clock signal). 4. **Pin 14:** Supply Voltage (Vcc +5.0V). --- ### 4. Application Areas Because of its rugged metal housing and wide temperature range, this part is commonly found in: * **Embedded Systems:** Providing a master clock for microprocessors. * **Telecommunications:** Timing for networking hardware. * **Industrial Controllers:** Systems requiring stability in harsh thermal environments. * **Legacy Hardware:** Maintenance of older circuit boards that use through-hole DIP components. ---