9LPRS477DKLFT

Overview

The Renesas 9LPRS477DKLFT is a clock synthesizer designed for AMD CPU and SATA/SRC applications. It features a single circuit with a 1:20 input-to-output ratio, accepting a crystal input to generate clock and crystal outputs. The device supports differential signaling on its outputs while lacking differential inputs. Operating at a maximum frequency of 48MHz, it requires a supply voltage between 3.135V and 3.465V. The component is housed in a 64-VFQFPN (9x9) package with an exposed pad, suitable for surface mount installation within a commercial temperature range of 0°C to 70°C.

Feature Summary

• Integrated PLL for clock synthesis in AMD CPU and SATA/SRC systems
• 1:20 output fan-out ratio with differential output capability
• Crystal input interface generating clock and crystal outputs
• Operates on 3.135V to 3.465V supply voltage

Applications

• AMD CPU timing solutions
• SATA/SRC controller synchronization
• System clock distribution networks

Procurement Notes

Verify the specific suffix DKLFT against official Renesas documentation to confirm package dimensions and tape-and-reel specifications. Ensure compatibility with the required 3.135V to 3.465V power domain during design-in. Confirm that the 64-VFQFPN footprint matches the target PCB layout constraints.

Selection Notes

Select this component when a 1:20 fan-out is required for AMD or SATA architectures. The fixed 48MHz maximum frequency limits usage to lower-speed timing references compared to higher-frequency PCIe buffers. Verify that the crystal input requirement aligns with the system oscillator strategy, as no external reference input types are supported.

Part Context

This part belongs to the Renesas programmable clock synthesizer family, distinct from non-programmable buffer devices like the 9DBL series. It serves as a dedicated timing generator for specific processor interfaces rather than a general-purpose clock distributor.

Replacement Considerations

Consult Renesas datasheets for direct pin-compatible alternatives within the 9LPRS series. Verify if newer revisions offer extended temperature ranges or updated packaging options.