The **MHO+55TAAD-R** is a specific part number for a high-stability **Crystal Oscillator** manufactured by MtronPTI. These components are essential in electronic circuits for providing a precise and stable clock signal. --- ### 1. Technical Specifications The part number is coded with specific parameters regarding its frequency, stability, and physical characteristics. | Parameter | Specification | | :--- | :--- | | **Component Type** | XO (Crystal Oscillator) | | **Package Style** | 14-pin DIP (Full size) | | **Output Type** | HCMOS / TTL | | **Operating Voltage** | 5.0 VDC | | **Frequency Stability** | ±50 ppm (Typical for '55' series) | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **RoHS Status** | Compliant (Indicated by '-R') | --- ### 2. Key Internal Components The "Electronic Parts" inside or associated with this module include: * **AT-Cut Quartz Crystal:** The primary resonating element that determines the fundamental frequency. * **Oscillator IC:** A CMOS integrated circuit that provides the necessary gain to maintain oscillation and buffers the output signal. * **Bypass Capacitor:** Internal ceramic capacitors used to filter noise from the DC power supply input. * **Gold-Plated Headers:** The 14-pin DIP housing uses robust pins for through-hole PCB mounting. --- ### 3. Pin Configuration (Typical 14-Pin DIP) While it uses a 14-pin footprint, only four pins are typically active: 1. **Pin 1:** N/C (No Connection) or Tri-state Control. 2. **Pin 7:** Case Ground (VSS). 3. **Pin 8:** Output Signal (The clock frequency). 4. **Pin 14:** Supply Voltage (VDD / +5V). --- ### 4. Common Applications Due to its rugged DIP packaging and industrial temperature rating, it is commonly used in: * **Legacy Computing:** Motherboards and industrial controllers. * **Telecommunications:** Base stations and timing synchronization. * **Test Equipment:** Oscilloscopes and signal generators. * **Embedded Systems:** Providing the heartbeat for microprocessors and FPGAs.