The **MHO+74FAAD-R** is a specific part number for a **Crystal Oscillator**, typically manufactured by companies like MtronPTI. These components are essential in electronic circuits for providing a stable clock signal or frequency reference. --- ### 1. Technical Specifications Breakdown The part number follows a specific nomenclature. Below is a breakdown of the typical characteristics associated with this series: | Parameter | Specification Details | | :--- | :--- | | **Component Type** | Crystal Oscillator (XO) | | **Package / Case** | 14-Pin Dip (Full Size) - Metal Can | | **Output Type** | CMOS / TTL Compatible | | **Operating Voltage** | Typically 5.0V (Standard for MHO+ series) | | **Frequency Stability** | Usually ±100ppm or better (Standard Industrial) | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **RoHS Status** | "R" suffix indicates RoHS Compliant | --- ### 2. Key Internal Components A crystal oscillator like the MHO+74FAAD-R is more than just a piece of quartz. It is an **integrated circuit (IC)** and a **crystal** combined in one housing. * **Quartz Crystal:** The heart of the device, which vibrates at a precise frequency via the piezoelectric effect. * **Oscillator IC:** Provides the feedback loop and amplification required to maintain the vibration. * **Load Capacitors:** Internal capacitors tuned to ensure the frequency stays within the specified tolerance. * **Metal Housing:** Acts as a Faraday shield to protect the internal signal from Electromagnetic Interference (EMI) and provides mechanical protection. --- ### 3. Pin Configuration (14-Pin Full Size) Though it is a "14-pin" package, many pins are usually omitted, leaving four primary connections: | Pin Number | Function | Description | | :--- | :--- | :--- | | **Pin 1** | NC / Tri-state | No Connection or Output Enable/Disable | | **Pin 7** | GND | Circuit Ground / Case Ground | | **Pin 8** | Output | The Square Wave / Clock Signal output | | **Pin 14** | Vcc | Positive Power Supply (5.0V) | --- ### 4. Common Applications These parts are "legacy" style components often found in: * **Industrial Control Systems:** Used in PLCs and older automation hardware. * **Telecommunications:** Network timing and synchronization. * **Embedded Systems:** Providing a master clock for Microcontrollers or FPGAs. * **Test Equipment:** Oscilloscopes and signal generators. ---