The **MHO+75TGD-R** is a specific type of **Crystal Oscillator** (often referred to as a Clock Oscillator). It is commonly used in digital circuits to provide a precise, stable frequency for microprocessors and logic systems. Below is a detailed breakdown of its specifications and electronic characteristics. --- ### 1. General Specifications The part number typically follows the naming convention of the manufacturer (often **MtronPTI**). Here is the technical profile: | Feature | Specification (Typical) | | :--- | :--- | | **Component Type** | Quartz Crystal Oscillator (SPXO) | | **Package Style** | 14-pin DIP (Thru-hole) - Large metal "Full Size" can | | **Output Frequency** | 75.000 MHz (indicated by the '75' in the code) | | **Operating Voltage** | +5.0V DC | | **Output Type** | TTL / HCMOS Compatible | | **Stability** | Usually ±50ppm or ±100ppm | --- ### 2. Pin Configuration (Internal Connectivity) Though it has 14 physical pins, only 4 are electrically connected to the internal circuit. The rest are present for physical stability on the PCB. | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | NC / Tri-state | No connection or Output Enable (OE) | | **7** | GND | Ground (Case is usually grounded) | | **8** | Output | The 75MHz Clock signal | | **14** | Vcc | +5V Power Supply | --- ### 3. Key Electronic Characteristics #### A. Frequency Stability The "MHO" series is known for high reliability in industrial environments. The quartz crystal inside is cut to vibrate at exactly 75MHz. Unlike a simple ceramic resonator, this part maintains its frequency even as temperature fluctuates. #### B. Output Waveform The device outputs a **Square Wave**. Since it is HCMOS/TTL compatible, it can drive multiple logic gates (Fan-out) without significant signal degradation. #### C. The "R" Suffix In modern electronic labeling, the **-R** suffix almost always indicates **RoHS Compliance**. This means the part is manufactured without lead (Pb) and other hazardous substances, making it legal for sale and use in modern regulated markets. --- ### 4. Common Applications * **Legacy Computing:** Providing the master clock for older CPU architectures. * **Telecommunications:** Timing for data transmission hardware. * **Industrial Control:** Synchronizing logic operations in PLC-like environments. * **RF Equipment:** Local oscillators for frequency conversion. ---