The **575L20HD** is a high-precision, low-profile Surface Mount Device (SMD) **Crystal Oscillator** manufactured by **CTS Electronic Components**. It is widely used in networking, storage, and wireless communication applications due to its stability and differential signaling capabilities. --- ### ## Technical Specifications The following table outlines the primary electrical and mechanical characteristics of the 575L20HD: | Parameter | Specification | | :--- | :--- | | **Frequency** | 20.000 MHz (Typical for this series) | | **Output Type** | LVDS (Low Voltage Differential Signaling) | | **Supply Voltage (Vcc)** | +3.3 VDC (Standard) | | **Frequency Stability** | ±50 ppm (Standard for the '575' series) | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **Package Size** | 7.0mm x 5.0mm (6-Pad SMD) | | **Phase Jitter** | < 1.0 ps (Low Jitter) | --- ### ## Key Electronic Components & Features #### 1. LVDS Differential Output Unlike standard CMOS oscillators, the 575L20HD uses **LVDS**. This provides two signals that are 180 degrees out of phase. * **Benefit:** It significantly reduces electromagnetic interference (EMI) and provides excellent noise immunity, making it ideal for high-speed data transmission. #### 2. Frequency Control (Pin 1) This model typically features an **Enable/Disable (E/D)** or **Tri-state** function on Pin 1. * **Logic '1' (High):** The oscillator outputs the frequency. * **Logic '0' (Low):** The output goes to a high-impedance state, reducing power consumption when the system is idle. #### 3. Low Phase Jitter The internal circuitry is optimized to provide a very "clean" clock signal. Low phase jitter is critical for timing in Serial ATA (SATA), Fiber Channel, and Ethernet applications to prevent data bit errors. --- ### ## Pin Configuration (6-Pad Layout) The device uses a standard 6-pad ceramic package. | Pin Number | Function | Description | | :---: | :--- | :--- | | **1** | E/D or NC | Enable/Disable or No Connection | | **2** | NC | No Connection | | **3** | GND | Circuit and Package Ground | | **4** | Output | Main Oscillator Output | | **5** | Complementary Output | The inverted signal for LVDS | | **6** | Vcc | Supply Voltage (+3.3V) | --- ### ## Applications The 575L20HD is found in electronic hardware such as: * **Data Communications:** 10G/40G/100G Ethernet switches. * **Storage:** RAID controllers and high-speed server backplanes. * **Wireless:** Base stations and small cell infrastructure.