The **MCSO2EU/VDE** is a high-performance, high-reliability clock oscillator specifically designed for high-temperature applications and harsh environments. It is manufactured by **Micro Crystal**, a company renowned for its precision timing components. --- ### ## Technical Specifications Overview The MCSO2EU series is characterized by its wide temperature range and low power consumption. | Feature | Specification | | :--- | :--- | | **Component Type** | CMOS Crystal Oscillator | | **Package Type** | Ceramic SMD (4-Pad) | | **Standard Frequency** | Commonly available from 10 kHz to 225 MHz | | **Supply Voltage (Vdd)** | 1.8V, 2.5V, 3.3V, or 5.0V (Variant dependent) | | **Operating Temperature** | -55°C to +125°C (Standard) / up to +210°C (High Temp) | | **Output Type** | CMOS / HC-MOS | | **Stability** | ±20 ppm to ±100 ppm | --- ### ## Key Electronic Characteristics ### 1. Low Current Consumption Unlike standard industrial oscillators, the MCSO2EU is optimized for low power. At lower frequencies (e.g., 32.768 kHz), the current draw is minimal, making it suitable for battery-operated mission-critical devices. ### 2. High Stability and Precision The "VDE" suffix often refers to specific screening or qualification standards (often related to military or high-reliability automotive/industrial benchmarks). The internal crystal is chemically etched to ensure long-term aging stability. ### 3. Protection and Durability * **Hermetic Sealing:** The unit is sealed in a ceramic package with a metal lid using gold-tin (AuSn) preform, ensuring vacuum or inert gas integrity. * **Shock/Vibration Resistance:** Designed to withstand high G-forces, common in downhole drilling or aerospace applications. --- ### ## Pin Configuration The device uses a standard 4-pad layout for Surface Mount Technology (SMT). | Pin # | Function | Description | | :--- | :--- | :--- | | 1 | E/D or NC | Enable/Disable (Tristate) or No Connection | | 2 | GND | Ground | | 3 | Fout | Frequency Output (CMOS) | | 4 | Vdd | Supply Voltage | --- ### ## Common Applications * **Downhole Tools:** Oil and gas drilling sensors where temperatures exceed 150°C. * **Aerospace & Defense:** Avionics and communication systems requiring wide temperature range tolerance. * **Automotive:** Under-the-hood electronics and engine control units (ECU). * **Medical:** High-reliability monitoring equipment.