Description:The 9DB403 is compatible with the Intel DB400v2 Differential Buffer Specification. This buffer provides 4 PCI Express® Gen2 clocks. The 9DB403 is driven by a differential output pair from a CK410B+, CK505 or CK509B main clock generator.
Renesas provides a recommended PCB layout guide in their application note (AN1844) for the 9DB403DGLFT. It suggests a 4-layer PCB with a dedicated thermal layer, and specific pad and via arrangements for efficient heat dissipation.
To ensure reliable operation in high-temperature environments, it's essential to follow the recommended thermal design guidelines, use a suitable thermal interface material, and consider using a heat sink or thermal pad. Additionally, ensure that the device is operated within the specified junction temperature range (TJ) of -40°C to 150°C.
Renesas recommends using a minimum of 2-3 decoupling capacitors (10uF to 22uF) placed close to the device, with a maximum distance of 1 cm from the power pins. The capacitors should be rated for high-frequency operation and have a low ESR (Equivalent Series Resistance).
The 9DB403DGLFT has an internal POR and BOR circuitry. To handle these features, ensure that the power supply ramps up slowly (typically 10ms to 100ms) to allow the internal voltage regulator to stabilize. Also, consider adding an external reset circuit or a supervisory IC to monitor the power supply and generate a reset signal if necessary.
The CLKIN pin requires a clock signal with a frequency range of 10 MHz to 40 MHz, and a duty cycle of 40% to 60%. The CLKOUT pin provides a clock signal that can be used as a system clock, but it's essential to ensure that the load capacitance is within the recommended range (10pF to 50pF) to maintain signal integrity.
Trust Checks
This model has been built in collaboration with the manufacturer.
Manufacturer Collaborated
This model has been verified by system checks.
System Verified
This model has been reviewed by community users.
Community Approved
Sponsored
9DB403DGLFT Overview
Use the download button to access the 9DB403DGLFT schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like 9DB40,
or try a keyword search, such as Clock Drivers
