The **M3V64T1CJ-R** is a specific type of high-frequency, voltage-controlled crystal oscillator (VCXO). It is commonly used in telecommunications and data processing equipment where precise clock synchronization is required. --- ## 1. Technical Specifications Below is a breakdown of the core electronic characteristics of the M3V series: | Parameter | Typical Specification | | :--- | :--- | | **Component Type** | VCXO (Voltage Controlled Crystal Oscillator) | | **Package Size** | 5.0 x 3.2 mm (SMD) | | **Output Type** | CMOS / TTL | | **Supply Voltage (Vcc)** | 3.3V (Standard for 'V' series) | | **Frequency Stability** | ±50 ppm or ±25 ppm (Depending on grade) | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **Control Voltage** | 1.65V ± 1.65V | --- ## 2. Key Electronic Parts & Functions The device consists of three primary internal sub-systems integrated into a single miniature package: ### A. The Quartz Crystal Blank * **Function:** Acts as the high-Q resonator. * **Detail:** The "64" in the part number often refers to the center frequency (e.g., 64.000 MHz). It provides the fundamental mechanical vibration that translates into an electrical signal. ### B. Varactor Diode (The "VC" element) * **Function:** Changes capacitance based on input voltage. * **Detail:** This allows the user to "pull" or slightly adjust the output frequency by changing the voltage on the Control Pin (Pin 1). This is critical for Phase-Locked Loops (PLLs). ### C. Integrated Circuit (IC) / Buffer * **Function:** Sustains oscillation and conditions the output. * **Detail:** The internal ASIC ensures the CMOS output levels are consistent and provides the "Tri-state" (Enable/Disable) functionality. --- ## 3. Pin Configuration For a standard 6-pin 5x3.2mm VCXO like the M3V series: | Pin # | Function | Description | | :--- | :--- | :--- | | **1** | **V_control** | Voltage input to adjust frequency | | **2** | **OE or NC** | Output Enable (High = Active) | | **3** | **GND** | Ground | | **4** | **Output** | Frequency signal output | | **5** | **NC** | No Connection | | **6** | **Vcc** | Supply Voltage (3.3V) | --- ## 4. Typical Applications * **Network Switches:** Synchronizing data packets across high-speed Ethernet. * **Phase-Locked Loops (PLL):** Used as the adjustable clock source to lock onto a reference signal. * **Digital Video:** Used in broadcast equipment to reduce "jitter" in video signals.