The **MHO+17TFD-R** is a high-precision, high-frequency **TCXO (Temperature Compensated Crystal Oscillator)** manufactured by **MtronPTI**. This component is specifically designed for telecommunications and networking hardware where timing stability is critical. --- ## 1. Technical Specifications The following table highlights the primary electrical characteristics of the MHO+ series oscillators: | Parameter | Specification | | :--- | :--- | | **Frequency Range** | Typically 1.0 MHz to 160.0 MHz | | **Package Style** | 14-pin DIP (Compatible with 4-pin footprints) | | **Input Voltage (Vcc)** | +5.0 VDC (Standard) or +3.3 VDC | | **Output Type** | HCMOS / TTL Compatible | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **Frequency Stability** | ±1.0 ppm to ±5.0 ppm | | **Control Voltage (Vc)** | Available if configured as a VCTCXO | --- ## 2. Key Electronic Features ### A. Temperature Compensation Unlike standard crystals, the "T" in the part number signifies **Temperature Compensation**. It utilizes an internal sensing circuit that adjusts the load capacitance of the crystal to counteract frequency "drift" caused by external temperature changes. ### B. Output Waveform (HCMOS/TTL) The device provides a square wave output. * **High Logic:** Minimum 90% of Vcc. * **Low Logic:** Maximum 10% of Vcc. * **Rise/Fall Time:** Fast transition times (typically <5ns) to ensure low jitter in digital circuits. ### C. Mechanical Interface The **14-pin DIP package** (though often only 4 pins are active) provides superior mechanical stability and shielding against Electromagnetic Interference (EMI) compared to smaller surface-mount devices (SMD). --- ## 3. Pin Configuration (Typical) While the physical housing has 14 pins, the electrical connection usually follows this standard layout: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | Vc or N/C | Voltage Control (for tuning) or No Connect | | **7** | GND | Case and Circuit Ground | | **8** | Output | The generated clock signal | | **14** | Vcc | Positive Supply Voltage | --- ## 4. Common Applications * **Telecommunications:** Base stations and small cells. * **Networking:** High-speed routers and switches. * **Test Equipment:** Frequency counters and synthesizers. * **Military/Aerospace:** Due to the robust DIP package and wide temperature range.