The **MA76TCA-R** is an industrial-grade electronic component, specifically a **Surface Mount Device (SMD) Quartz Crystal Oscillator**. It is commonly utilized in telecommunications, networking, and high-precision timing circuits. Below is a detailed breakdown of its electronic characteristics and specifications. --- ## 1. Core Technical Specifications The "MA-76" series is manufactured by Epson (or similar licensed manufacturers) and belongs to a class of high-stability MHz range oscillators. | Parameter | Specification (Typical) | | :--- | :--- | | **Component Type** | Quartz Crystal Oscillator (SPXO) | | **Frequency Range** | Typically 10 MHz to 60 MHz (Standard) | | **Frequency Tolerance** | ±50 ppm to ±100 ppm | | **Operating Voltage** | 3.3V or 5.0V DC | | **Package Type** | Ceramic SMD (Surface Mount) | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **Output Type** | CMOS / TTL Compatible | --- ## 2. Pin Configuration and Internal Logic The MA76TCA-R usually features a 4-pin or 6-pin layout. The internal logic consists of a high-purity quartz crystal blank paired with a CMOS IC for oscillation and buffering. ### Pinout Functional Description: 1. **Standby (ST) or OE (Output Enable):** Controls whether the oscillator is active. High = Active; Low = High Impedance (Power Saving). 2. **GND:** Ground reference. 3. **OUT:** The generated clock signal (Square Wave). 4. **Vcc:** Power supply input. --- ## 3. Key Electronic Characteristics ### A. Frequency Stability The "TCA" suffix often denotes a specific temperature compensation or stability rating. The device is designed to minimize "drift"—the change in frequency caused by aging or temperature fluctuations—ensuring the digital system stays synchronized. ### B. Load Capacitance It is designed to drive a specific load (usually **15pF**). If the PCB trace capacitance exceeds this, the rise and fall times of the clock signal may degrade, leading to data errors in high-speed microprocessors. ### C. Low Jitter The MA76 series is engineered for low phase noise. This is critical for RF (Radio Frequency) applications where timing "jitter" can cause signal interference or bit-error rates (BER) in data transmission. --- ## 4. Common Applications * **Networking Hardware:** Switches, routers, and modems. * **Industrial Automation:** PLCs (Programmable Logic Controllers) and sensor hubs. * **Consumer Electronics:** High-end audio interfaces and video processing units. * **Automotive:** Infotainment systems and non-safety critical ECU timing. ---