9DBU0231AKLF

Overview

The 9DBU0231AKLF is a zero-delay fanout buffer from the Renesas 1.5 V Ultra-Low-Power PCIe family, designed for PCI Express Gen1/2/3 applications. It features two LP-HCSL differential outputs and accepts HCSL-compatible differential inputs. The device operates with a supply voltage of 1.5 V and supports input frequencies ranging from 30 MHz to 175 MHz. Key electrical parameters include a typical power consumption of 35 mW in PLL mode and an additive phase jitter of 313 fs RMS. It is housed in a space-saving 4x4 mm 24-pin VFQFPN package.

Feature Summary

• Zero-delay buffer architecture with programmable slew rate and output amplitude tuning
• LP-HCSL differential outputs reduce board space by eliminating four resistors compared to standard HCSL
• Low power consumption of 35 mW typical in PLL mode with OE# pins for DIF power management
• Configuration via strapping pins without requiring an SMBus interface

Applications

• PCI Express Gen1/2/3 clock distribution
• High-performance computing systems
• Telecommunications infrastructure

Procurement Notes

Verify the specific suffix 'AKLF' against official Renesas documentation to confirm temperature range and packaging details. Ensure compatibility with existing PCB footprints for the 24-VFQFPN package. Confirm RoHS compliance status through the manufacturer's current datasheet or environmental declaration files.

Selection Notes

Select this component when low power consumption and minimal board space are critical for PCIe clock distribution. The LP-HCSL outputs are suitable for reducing passive component count. Verify that the required input frequency falls within the 30 MHz to 175 MHz range and that the system can accommodate the 1.5 V supply voltage.

Part Context

This part belongs to the IDT/Renesas 9DBU0231 series of ultra-low-power PCIe clock buffers. It is distinct from the 9FGV0231 (clock generator) and 9ZXL series (high-performance buffers). The device serves as a fanout buffer rather than a synthesizer, relying on an external clock source for its input signal.