The **MHO+56TBD-R** refers to a high-precision, high-frequency **Crystal Oscillator** (specifically a TCXO or a specialized Clock Oscillator) typically manufactured by companies like MtronPTI. These components are essential for providing a stable frequency reference in telecommunications and data processing hardware. --- ### 1. Component Specifications The alphanumeric code describes the electrical characteristics and physical packaging of the device. | Feature | Specification | Description | | :--- | :--- | :--- | | **Part Type** | Crystal Oscillator | Provides a fixed-frequency square or sine wave signal. | | **Output Type** | CMOS / TTL | Standard digital logic output levels. | | **Supply Voltage** | 5.0V (Typical) | The standard operating voltage for the "MHO" series. | | **Frequency Range** | 1.0 MHz to 150+ MHz | Depends on the specific factory calibration. | | **Package Style** | 14-pin DIP (Full Size) | A metal "can" package with 4 active pins. | | **RoHS Status** | Compliant (-R) | The "R" suffix indicates Lead-Free/RoHS compliance. | --- ### 2. Pinout Configuration Although it fits in a 14-pin footprint, usually only 4 pins are physically present or functional. | Pin Number | Function | Description | | :--- | :--- | :--- | | **Pin 1** | N/C or Tri-state | Often used for Output Enable (OE) or left unconnected. | | **Pin 7** | Ground (GND) | Connected to the metal case for shielding. | | **Pin 8** | Output | The generated clock signal. | | **Pin 14** | Vcc | Positive power supply input. | --- ### 3. Key Electronic Characteristics * **Frequency Stability:** These oscillators are designed for low "jitter" and high stability, often maintaining precision within ±25ppm to ±100ppm across temperature ranges. * **Hermetic Sealing:** The metal casing is resistance-welded to protect the quartz crystal from atmospheric moisture and EMI (Electromagnetic Interference). * **Load Capacitance:** Typically optimized for a 15pF to 50pF load. --- ### 4. Common Applications Due to its robust metal packaging and reliable through-hole design, it is frequently used in: * **Legacy Computing:** Motherboards and industrial controllers. * **Networking:** Routers, switches, and high-speed modems. * **Test Equipment:** Oscilloscopes and signal generators requiring a steady timebase. ---