9DBU0631AKILFT

Overview

The 9DBU0631AKILFT is a PCI Express zero-delay buffer and fanout clock distribution IC manufactured by Renesas Electronics. It features a single HCSL differential input that drives six LP-HCSL differential outputs, providing a 1:6 input-to-output ratio. The device operates with a supply voltage range of 1.425V to 1.575V and supports maximum frequencies up to 167MHz. Designed for low power consumption, it integrates a PLL for jitter attenuation while maintaining zero delay characteristics. The component is housed in a 40-VFQFPN (5x5mm) package with an exposed pad, suitable for surface mount installation across an operating temperature range of -40°C to 85°C.

Feature Summary

• PCIe Zero-Delay Buffer: Provides 1:6 fanout with integrated PLL for jitter attenuation and zero input-to-output delay.
• LP-HCSL Outputs: Features six Low-Power HCSL differential outputs, reducing board space and power compared to standard HCSL.
• Flexible Configuration: Supports programmable slew rate and output amplitude tuning for various line lengths and environments.
• Low Power Operation: Typical power consumption of 35mW in PLL mode with OE# pins supporting deep power management.

Applications

• PCI Express Gen1/Gen2/Gen3 clock distribution systems
• High-speed server and storage backplane timing
• Network infrastructure equipment requiring low-jitter clocking

Procurement Notes

Verify the suffix 'AKILFT' corresponds to the tape and reel packaging variant, as opposed to the 'AKLF' tray version which may have different thermal or handling specifications. Confirm RoHS compliance status through official Renesas documentation prior to procurement. Ensure ESD protection protocols are followed during handling due to moisture sensitivity classification.

Selection Notes

Select this component when a 1:6 fanout ratio is required for PCIe applications. Compare against the 9DBU0441AKILFT if only four outputs are needed, or the 9DBU0231AKILFT for two outputs. Ensure the design environment supports the 1.5V core voltage and that the 40-pin VFQFPN footprint fits the PCB layout constraints.

Part Context

This part belongs to the Renesas IDT 9DBU series of ultra-low-power PCIe clock buffers. It is functionally related to the 9DBU0441 and 9DBU0231 models within the same family, differentiated primarily by the number of outputs (6, 4, and 2 respectively). The AKILFT suffix indicates specific packaging and environmental compliance attributes defined by the manufacturer.

Replacement Considerations

Direct pin-compatible replacements within the same package include the 9DBU0441AKILFT (4 outputs) and 9DBU0231AKILFT (2 outputs), provided fewer outputs are acceptable. Cross-family substitution requires verification of electrical parameters such as supply voltage and output signaling standards.