9DBV0231AKLF

Overview

The 9DBV0231AKLF is a low-power, 2-output, 1.8V PCIe zero-delay/fanout clock buffer manufactured by Renesas Electronics. It features LP-HCSL differential outputs and accepts HCSL-compatible differential inputs. The device supports spread spectrum input for EMI reduction and includes output enable pins for power management. Key electrical parameters include a supply voltage of 1.8V, an output frequency range of 30 MHz to 137.5 MHz, and typical power consumption of 52 mW in PLL mode. It is housed in a space-saving 24-pin VFQFPN package (4.0 x 4.0 mm) with a 0.5 mm pitch.

Feature Summary

• LP-HCSL differential outputs reduce board space by eliminating external resistors required for standard HCSL.
• Zero-delay buffer architecture minimizes phase jitter with pin/software selectable PLL bandwidth.
• SMBus-selectable features allow optimization of signal integrity, slew rate, and output amplitude.
• Outputs are blocked until the PLL locks, ensuring clean system startup.

Applications

• 1.8V PCIe Gen 1–5 Zero-Delay/Fanout Buffer (ZDB/FOB)
• High-performance computing systems requiring low-jitter clock distribution
• Servers and workstations utilizing PCIe interfaces

Procurement Notes

Verify the specific suffix 'AKLF' against the manufacturer's current datasheet to confirm package type and temperature range. Ensure compatibility with 1.8V logic levels and SMBus interface requirements during component sourcing.

Selection Notes

Select this component for applications requiring a 2-output fanout buffer with zero-delay characteristics at 1.8V. Compare power consumption metrics against other PCIe clock buffers if battery life or thermal constraints are critical. Verify that the LP-HCSL output swing matches the receiver input requirements of the target PCIe devices.

Part Context

The 9DBV0231 belongs to Renesas' family of ultra-low-power PCIe clock buffers. It serves as a replacement for legacy IDT clocking solutions, offering improved power efficiency and reduced board footprint through its integrated LP-HCSL outputs and compact 24-pin VFQFPN packaging.

Replacement Considerations

Check for direct replacements within the 9DBV series or compatible 9FGV/9DBU families. Ensure substitute parts support the same 1.8V supply voltage and LP-HCSL output signaling to maintain signal integrity without hardware redesign.