The **MHO311FCG-R** is an electronic component primarily classified as a **Crystal Oscillator**. It is commonly used in telecommunications, networking, and data processing equipment to provide a precise and stable timing reference (clock signal). Below is a detailed breakdown of its electronic specifications and characteristics. --- ### 1. General Specifications The MHO series is often produced by manufacturers like **MtronPTI**. This specific part is a Fixed-Frequency Crystal Oscillator (XO) designed for high-reliability applications. | Feature | Specification (Typical) | | :--- | :--- | | **Component Type** | Crystal Clock Oscillator (XO) | | **Output Type** | CMOS / TTL Compatible | | **Frequency Range** | Typically 1.0 MHz to 150 MHz (varies by sub-code) | | **Supply Voltage ($V_{cc}$)** | 5.0V (Common for MHO3 series) | | **Package Style** | 14-pin DIP (DIL) - Often uses only 4 pins | | **Operating Temperature** | Commercial (0°C to +70°C) or Industrial (-40°C to +85°C) | --- ### 2. Pin Configuration Although it sits in a 14-pin footprint, most standard MHO oscillators only utilize 4 active pins: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | NC / Tri-state | No connection or Output Enable/Disable control | | **7** | GND | Ground connection | | **8** | Output | The generated square wave (Clock Signal) | | **14** | $V_{cc}$ | Positive Supply Voltage (+5V) | --- ### 3. Key Electronic Characteristics * **Frequency Stability:** Usually ranges from ±25ppm to ±100ppm depending on the specific grade. This determines how much the frequency deviates due to temperature changes or aging. * **Load Capacitance:** Optimized for driving standard CMOS loads (usually 15pF to 50pF). * **Duty Cycle:** Maintains a 40/60% to 50/50% symmetry, ensuring reliable digital logic triggering. * **Rise/Fall Time:** Designed with fast transition times (typically < 10ns) to reduce jitter in high-speed digital circuits. --- ### 4. Part Number Decoding (Typical) * **MHO:** Series designation (MtronPTI High Reliability). * **3:** Represents the voltage and package type (3 = 5V, 14-pin DIP). * **11:** Stability and Temperature code. * **F:** Frequency Control / Symmetry specification. * **CG:** Specific internal manufacturing revision or frequency code. * **R:** RoHS Compliant (Lead-free). --- ### 5. Application Usage The MHO311FCG-R is typically found on older or high-reliability Industrial PCBs (Printed Circuit Boards) for: 1. **Microprocessor Clocks:** Providing the base heartbeat for CPUs. 2. **Baud Rate Generators:** For serial communication (RS-232/485). 3. **Industrial Controllers:** Where a through-hole (DIP) component is preferred over surface mount for mechanical durability.