The **MHO 68TAAD-R** is a specific type of **Crystal Oscillator** (specifically an XO - Clock Oscillator). These components are essential in electronics for providing a stable, precise frequency signal used as a heartbeat for microprocessors and digital circuits. Below is a detailed breakdown of its specifications and electronic characteristics. --- ### 1. General Specifications Based on the part numbering convention (typically associated with manufacturers like MtronPTI), here are the technical attributes: | Feature | Description | | :--- | :--- | | **Component Type** | Crystal Clock Oscillator | | **Package Style** | 14-pin DIP (Dual In-line Package) - Full Size | | **Output Type** | TTL / HCMOS Compatible | | **Frequency Stability** | Usually ±100ppm or ±50ppm (standard for this series) | | **Operating Voltage** | Typically 5.0V DC | --- ### 2. Pin Configuration (Internal Structure) Although it uses a 14-pin footprint, most oscillators of this type only utilize 4 active pins. | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | N/C or Tri-State | No connection or Output Enable/Disable control | | **7** | GND | Circuit Ground | | **8** | Output | The generated clock signal (Square Wave) | | **14** | Vcc | Positive Power Supply (+5V) | --- ### 3. Electronic Characteristics The "MHO" series is known for several key performance factors: * **HCMOS/TTL Compatibility:** It can drive both high-speed CMOS and standard TTL logic gates, making it versatile for older industrial equipment and modern digital boards. * **Through-Hole Mounting:** The "68" designation refers to the physical package size (DIP-14), which is mounted by soldering pins through holes in the PCB. This provides high mechanical stability compared to surface-mount (SMD) parts. * **Thermal Stability:** These parts are designed to maintain a consistent frequency even as the internal temperature of the device rises during operation. ### 4. Decoding the Part Number * **MHO:** Series prefix (Metal Hermetic Oscillator). * **6:** Denotes the package style (Full size 14-pin DIP). * **8:** Specific voltage or stability rating (usually 5V operation). * **TAAD:** Often refers to specific frequency tolerances and temperature ranges (e.g., 0°C to 70°C). * **-R:** Indicates RoHS compliance (Lead-free). --- ### Summary of Use Cases The MHO 68TAAD-R is commonly found in: 1. **Industrial Controllers:** Where physical durability and 5V logic are required. 2. **Legacy Computing:** Replacing old timing crystals in vintage hardware. 3. **Communication Equipment:** Providing the base clock for data transmission.