The **MHO371TAG-R** is a high-performance, surface-mount (SMD) **Crystal Oscillator**. It is specifically designed for applications requiring high precision and reliability in timing, such as telecommunications, networking, and industrial computing. Below is a detailed breakdown of its electronic characteristics and technical specifications. --- ## 1. Core Technical Specifications The "MHO" series generally refers to metal-housed oscillators with specific CMOS outputs. | Parameter | Typical Value / Range | | :--- | :--- | | **Component Type** | Crystal Oscillator (XO) | | **Output Type** | HCMOS / TTL Compatible | | **Frequency Stability** | ±25ppm to ±100ppm (depending on grade) | | **Supply Voltage (Vdd)** | 3.3V or 5.0V (Standard) | | **Package Type** | SMD (Surface Mount Device) | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **Mounting Type** | J-Lead or Gull-wing (4-pin/14-pin equivalent footprint) | --- ## 2. Key Electronic Features ### A. HCMOS/TTL Output The device provides a square wave output that is compatible with most modern digital logic circuits (microcontrollers, FPGAs, and ASICs). This eliminates the need for external load capacitors typically required by basic quartz crystals. ### B. Tri-State Functionality (Enable/Disable) The "TAG" designation often implies specific pin configurations or features like **Tri-state control**. - **Pin 1 (Enable):** When high or left open, the oscillator functions normally. - **Pin 1 (Disable):** When pulled low, the output goes into a high-impedance state, reducing power consumption. ### C. J-Lead Package Design The "R" suffix often indicates the packaging or a specific revision. The physical housing is typically a metal "DIP-style" header converted for surface mount use (J-Lead), providing: * Excellent EMI shielding due to the metal casing. * Resistance to mechanical shock and vibration. --- ## 3. Pin Configuration (Typical) | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | E/D or NC | Enable/Disable Control or No Connection | | **2** | GND | Circuit Ground | | **3** | Output | Frequency Output Signal | | **4** | Vdd | DC Power Supply Input | --- ## 4. Typical Applications * **Networking:** Routers, switches, and high-speed modems. * **Industrial:** PLCs (Programmable Logic Controllers) and automation sensors. * **Computing:** Clock generation for motherboards and embedded systems. ---