The **PL602-03HOC-R** is a high-performance, low-phase-noise clock generator/buffer integrated circuit (IC) developed by Microchip Technology (formerly PhaseLink). It is specifically designed to produce high-frequency outputs with minimal jitter, making it ideal for communication and networking applications. ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Function** | Low Phase Noise Clock Generator | | **Output Type** | CMOS / TTL | | **Output Frequency** | Up to 100MHz | | **Input Type** | Fundamental Crystal (10MHz - 30MHz) or Reference Clock | | **Operating Voltage** | 2.5V to 3.3V (±10%) | | **Operating Temperature** | 0°C to +70°C (Commercial) | | **Package Type** | SOT23-6L | | **Jitter Performance** | < 1ps RMS (typical) | --- ### 2. Functional Description The PL602-03HOC-R acts as a **frequency multiplier**. It takes a relatively low-frequency input from a crystal or an external clock and utilizes an internal Phase-Locked Loop (PLL) to generate a higher-frequency output. * **HOC Designation:** The "HOC" suffix usually indicates a specific multiplier configuration or performance grade (High Output CMOS). * **Multiplier Logic:** This specific part typically functions as a **3x multiplier** (e.g., a 25MHz crystal input yields a 75MHz output). * **Low Phase Noise:** It is engineered to keep the "noise floor" very low, which prevents data errors in high-speed serial communication. --- ### 3. Pin Configuration (SOT23-6L) | Pin Number | Name | Description | | :--- | :--- | :--- | | 1 | XIN / CLK | Crystal input or reference clock input. | | 2 | GND | Ground connection. | | 3 | XOUT | Crystal output (leave floating if using an external clock). | | 4 | CLKOUT | The synthesized high-frequency output signal. | | 5 | VDD | Power supply (2.5V or 3.3V). | | 6 | OE / PDB | Output Enable or Power Down (logic dependent). | --- ### 4. Common Applications * **Networking:** Used in Gigabit Ethernet and Fibre Channel switches. * **Storage:** SAS/SATA host bus adapters. * **Consumer Electronics:** High-definition video equipment requiring precise timing. * **FPGA Clocking:** Providing stable reference clocks to FPGA or CPLD logic. --- ### 5. Part Number Breakdown * **PL602:** Product Series (Low Phase Noise PLL). * **-03:** Specific Configuration/Multiplier variant. * **H:** High-speed CMOS output. * **O:** Operating temperature range (Commercial). * **C:** Package code (SOT23). * **-R:** Tape and Reel packaging.