The **MHO361TAD-R** is a high-performance **Crystal Oscillator (XO)** manufactured by MtronPTI. It is specifically designed as a surface-mount device (SMD) utilized in timing and frequency control circuits where stability and reliability are critical. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical and physical characteristics of the MHO361 series: | Feature | Specification | | :--- | :--- | | **Component Type** | Quartz Crystal Oscillator (Fixed Frequency) | | **Output Type** | HCMOS / TTL Compatible | | **Supply Voltage (Vcc)** | +5.0 VDC (Standard for this series) | | **Package Style** | 4-Pad Ceramic SMD | | **Frequency Stability** | Typically ±25ppm to ±100ppm (depending on sub-variant) | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **RoHS Compliance** | Yes (indicated by the "-R" suffix) | --- ### 2. Core Electronic Components & Architecture The MHO361TAD-R is an integrated timing solution consisting of several internal stages: 1. **Quartz Crystal Blank:** The heart of the part. It is a precision-cut piece of quartz that vibrates at a specific resonant frequency when an electric field is applied. 2. **Oscillator IC:** A specialized integrated circuit that provides the gain needed to sustain oscillation and converts the sinusoidal wave into a clean square wave (HCMOS/TTL). 3. **Bypass Capacitance:** Internal capacitors to filter power supply noise and ensure signal integrity. 4. **Tri-state Control (Pin 1):** The "T" in the part number often denotes **Tri-state functionality**. This allows the output to be placed in a high-impedance state, effectively disconnecting it from the bus for testing or power-saving purposes. --- ### 3. Pin Configuration The device uses a standard 4-pad layout common in industrial oscillators: | Pad Number | Function | Description | | :--- | :--- | :--- | | **1** | Tri-state / NC | Enable/Disable the output signal. | | **2** | Ground | Case and circuit ground. | | **3** | Output | The generated clock frequency signal. | | **4** | Vcc | Positive supply voltage (+5V). | --- ### 4. Common Applications Due to its robust ceramic packaging and HCMOS output, the MHO361TAD-R is frequently used in: * **Networking Hardware:** Routers, switches, and high-speed modems. * **Industrial Controllers:** PLC units and factory automation systems. * **Embedded Systems:** Microprocessor and FPGA clocking where a 5V rail is available. * **Medical Equipment:** Diagnostic devices requiring stable timing references.