The **PL133-37TC-R** is a high-performance, low-power, fan-out buffer integrated circuit (IC) manufactured by Microchip Technology (formerly PhaseLink). It is specifically designed to distribute a high-frequency clock signal to multiple destinations with minimal signal degradation. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Function** | 1:3 Low Power LVCMOS Fan-out Buffer | | **Input Frequency Range** | 1MHz to 150MHz | | **Operating Voltage (VDD)** | 2.25V to 3.63V | | **Output Type** | 3 LVCMOS Outputs | | **Package Type** | SOT23-6L | | **Operating Temperature** | 0°C to +70°C (Commercial) | | **Packaging Method** | Tape and Reel (-R) | --- ### 2. Functional Description The device acts as a "distributor" for clock signals. It takes a single reference clock input and provides three identical copies at the output pins. * **Low Phase Noise:** It is engineered to add minimal jitter, ensuring that the timing integrity of the clock remains stable. * **Power Management:** The "TC" variant is optimized for low power consumption, making it ideal for battery-operated or green-energy applications. * **Output Drive:** The outputs are designed to drive 15pF loads while maintaining fast rise and fall times. --- ### 3. Pin Configuration (SOT23-6L) | Pin Number | Name | Type | Description | | :---: | :--- | :--- | :--- | | 1 | OUT1 | Output | Clock Output 1 | | 2 | GND | Power | Ground Connection | | 3 | OUT2 | Output | Clock Output 2 | | 4 | OUT0 | Output | Clock Output 0 | | 5 | VDD | Power | Power Supply (2.5V - 3.3V) | | 6 | FIN | Input | Reference Clock Input | --- ### 4. Part Number Breakdown The suffixing provides specific information about the packaging and physical properties: * **PL133-37**: Base part number for the 1:3 Fan-out Buffer. * **T**: Package Code (SOT23). * **C**: Temperature Range (Commercial: 0°C to 70°C). * **-R**: Shipping Media (Tape and Reel). --- ### 5. Application Use Cases 1. **Server & Storage:** Distributing a reference clock to multiple controllers or PHYs. 2. **Embedded Systems:** Synchronizing different microcontrollers (MCUs) or FPGAs on a single PCB. 3. **Communication Equipment:** Providing stable clocking for routers and switches.