Description:The 8T39S11A is a high-performance clock fanout buffer. The input clock can be selected from two differential inputs or one crystal input. The internal oscillator circuit is automatically disabled if the crystal input is not selected. The crystal pin can be driven by a single-ended clock.The selected signal is distributed to ten differential outputs which can be configured as LVPECL, LVDS or HSCL outputs. In addition, an LVCMOS output is provided. All outputs can be disabled into a high-impedance state. The
Renesas provides a recommended PCB layout guide in their application notes (e.g., AN983A) and evaluation board documentation. It's essential to follow these guidelines to ensure optimal performance, especially for high-frequency signals.
For optimal jitter performance, it's recommended to use a high-quality clock source with a low jitter specification. Additionally, ensure the clock input is properly terminated, and the clock signal is clean and free from noise. Renesas also provides guidelines for clock input configuration in their application notes.
The 8T39S11ANLGI8 is rated for industrial temperature range operation, which is typically -40°C to 85°C. However, it's essential to check the specific temperature range for your application and ensure the device is operated within the recommended range to maintain reliability and performance.
Renesas recommends a specific power sequencing scheme to ensure proper device operation. This typically involves powering up the VDD and VDDA pins simultaneously, followed by the VDDIO pin. The exact sequence may vary depending on the application, so it's essential to consult the datasheet and application notes for specific guidance.
Renesas recommends using high-quality, low-ESR decoupling capacitors with a value of 0.1 μF to 1 μF, placed as close as possible to the power pins. The exact capacitor value and type may vary depending on the application and PCB layout, so it's essential to consult the datasheet and application notes for specific guidance.
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8T39S11ANLGI8 Overview
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