The **MHO+17FDD-R** is a high-performance **Crystal Oscillator** (specifically a Clock Oscillator) manufactured by MtronPTI. These components are critical in electronic circuits for providing a precise and stable frequency reference (clock signal). --- ## 1. Technical Specifications The part number follows a specific nomenclature used by MtronPTI. Below are the primary electronic characteristics of this series: | Parameter | Specification | | :--- | :--- | | **Output Type** | HCMOS / TTL Compatible | | **Supply Voltage ($V_{DD}$)** | +5.0 VDC (Standard) | | **Package Style** | 14-pin DIP (Full Size) - 4 pins used | | **Frequency Range** | 1.000 MHz to 100.000 MHz | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **Stability** | ±100 ppm (Standard for the "F" suffix) | | **Symmetry/Duty Cycle** | 40/60% to 50/50% | --- ## 2. Key Electronic Features The MHO+ series is designed with several internal electronic protections and functional stages: ### A. Frequency Generation It utilizes a high-quality quartz crystal resonator integrated with an oscillation circuit. The "F" in the part number typically denotes the **Frequency Stability** rating, ensuring the clock pulse remains accurate across temperature fluctuations. ### B. Output Drive (HCMOS/TTL) The output is designed to drive multiple logic gates. It provides a rail-to-rail square wave, making it compatible with both older TTL logic and modern HCMOS microcontrollers and FPGAs. ### C. Tri-state Functionality The "D" in the suffix usually refers to the **Tristate (Enable/Disable)** function. - When Pin 1 is High (or floating), the oscillator outputs the frequency. - When Pin 1 is Low, the output goes into a high-impedance state, allowing for power saving or bus-sharing. --- ## 3. Pin Configuration (14-Pin DIP) Despite the large "14-pin" footprint, only 4 pins are electrically active: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | E/D or NC | Enable/Disable Control (Tri-state) | | **7** | Case Ground | Connected to the metal header for shielding | | **8** | Output | The Clock Signal output | | **14** | $+V_{DD}$ | Power Supply Input (+5V) | --- ## 4. Typical Applications Due to its robust DIP packaging and industrial temperature rating, this part is commonly found in: 1. **Legacy Industrial Control Systems:** Replacing older clock generators. 2. **Telecommunications:** Providing timing for data transmission. 3. **Embedded Systems:** Serving as the master clock for CPUs or Microprocessors. 4. **Test & Measurement Equipment:** Where a stable 5V signal is required.