The **MHO+23FBG-R** is a high-precision, high-frequency crystal oscillator, typically used in telecommunications and data networking. It belongs to the MHO series of **Clock Oscillators (XO)** manufactured by companies like MtronPTI. --- ### 1. Technical Specifications The part number follows a specific nomenclature. Here is the breakdown of its primary electronic characteristics: | Parameter | Specification | Description | | :--- | :--- | :--- | | **Type** | Crystal Oscillator (XO) | Uses a quartz crystal to generate a stable clock signal. | | **Package** | 4-Pin DIP (Full Size) | Metal can package for through-hole mounting. | | **Output Type** | HCMOS / TTL | Compatible with high-speed CMOS and TTL logic levels. | | **Supply Voltage** | 5.0 VDC | Standard operating voltage for legacy and industrial systems. | | **Stability** | ±100 ppm (Typical) | Frequency stability over the operating temperature range. | | **Frequency Range** | 1.0 MHz to 150 MHz | The specific frequency is usually marked on the top of the can. | --- ### 2. Physical Construction and Pins The "FBG" and "R" suffixes often denote specific temperature ranges and RoHS compliance. * **Housing:** Hermetically sealed metal package to reduce Electromagnetic Interference (EMI) and protect the internal quartz from moisture. * **Pinout Configuration:** 1. **Pin 1 (NC/Enable):** No Connection or Output Enable/Disable. 2. **Pin 7 (GND):** Case ground and circuit return. 3. **Pin 8 (Output):** The generated square wave frequency. 4. **Pin 14 (Vcc):** +5V Power Supply. --- ### 3. Key Electronic Features * **Low Jitter:** Designed for timing-sensitive applications like Ethernet, Fibre Channel, and SONET. * **Tri-State Functionality:** Often includes an enable/disable function on Pin 1, allowing the output to be placed in a high-impedance state for testing or power saving. * **RoHS Compliant:** The "-R" suffix indicates that the part meets the Restriction of Hazardous Substances directive (Lead-free). --- ### 4. Application Areas Because of its 5V operation and robust metal casing, it is commonly found in: * Industrial automation controllers. * Legacy networking hardware (Routers/Switches). * Test and measurement instrumentation. * Medical electronic devices.