The **MHO+64FAAD-R** is a high-performance, industrial-grade **Crystal Oscillator (XO)**. It is primarily used in telecommunications, networking, and high-speed data transmission equipment where precise timing is critical. --- ### 1. Key Technical Specifications Based on the part number nomenclature (typically associated with manufacturers like **MtronPTI**), here are the primary electronic characteristics: | Parameter | Specification | | :--- | :--- | | **Output Type** | HCMOS / TTL | | **Frequency Stability** | ±50 ppm to ±100 ppm (Standard) | | **Supply Voltage (Vcc)** | +5.0V DC | | **Package Style** | 14-pin DIP (Dual In-line Package) - Full Size | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **RoHS Status** | Compliant (Indicated by the '-R' suffix) | --- ### 2. Functional Components Internal to the metal housing, the device consists of several integrated parts: 1. **Quartz Crystal Blank:** The core resonator that determines the fundamental frequency. 2. **Oscillator IC:** An integrated circuit that provides the gain needed to sustain oscillation and buffers the output signal. 3. **Bypass Capacitors:** Internal components that filter noise from the power supply to ensure signal integrity. 4. **Hermetic Seal:** The metal "can" package is resistance-welded to protect the internal components from humidity and atmospheric contaminants. --- ### 3. Pin Configuration (14-Pin DIP) Although it has a 14-pin footprint, only four pins are typically active: | Pin Number | Function | Description | | :--- | :--- | :--- | | **Pin 1** | N/C or Tri-State | No connection or Output Enable/Disable | | **Pin 7** | GND | Circuit Ground | | **Pin 8** | Output | The generated clock signal (Square Wave) | | **Pin 14** | Vcc | +5.0V Power Supply | --- ### 4. Part Number Breakdown The suffixing and prefixing follow a specific logic: * **MHO:** Series designation (High-speed HCMOS/TTL). * **64:** Specific package and voltage variant (usually 5.0V, Full Size). * **F:** Stability/Temperature code (e.g., ±100ppm over Industrial range). * **AA:** Internal frequency/Output code. * **D:** Duty Cycle specification (typically 40/60% or 45/55%). * **-R:** RoHS Compliant (Lead-free). --- ### 5. Common Applications * **Legacy Networking:** Used in routers and switches requiring a 5V clock source. * **Industrial Controllers:** Timing for PLCs (Programmable Logic Controllers). * **Test Equipment:** Providing a stable reference clock for measuring instruments.