9DB403DFLFT

Overview

The Renesas Electronics 9DB403DFLFT is a clock buffer IC designed for PCI Express applications, supporting Gen1 and Gen2 standards. It features four outputs with HCSL output types and accepts clock inputs up to 400 MHz. The device operates within a supply voltage range of 3.135 V to 3.465 V and consumes 125 mA of operating current. Packaged in a 28-SSOP format, it functions between 0°C and +70°C. Key electrical parameters include a maximum propagation delay of 0 ps and a maximum duty cycle of 55%.

Feature Summary

• Four-output clock distribution with zero propagation delay
• HCSL input/output signaling compatible with PCIe Gen1/Gen2
• Operates at frequencies up to 400 MHz
• Integrated PLL functionality for signal integrity

Applications

• PCI Express (PCIe) Gen1 and Gen2 buffer distribution
• Zero-delay clock buffering systems
• High-speed digital interface timing solutions

Procurement Notes

Verify the specific suffix 'FLFT' against the manufacturer's datasheet to confirm package type and tape-and-reel specifications. Confirm RoHS compliance status directly from the official documentation, as regulatory details may vary by production batch or region. Ensure the ordering quantity matches the standard factory pack size of 1500 units if full reels are required.

Selection Notes

Select this component when a single-clock source must drive four distinct loads with minimal skew in PCIe architectures. Verify that the system power supply can maintain the 3.135 V to 3.465 V range under load. Check that the SSOP-28 footprint aligns with the PCB layout constraints and thermal requirements for the 125 mA operating current.

Part Context

This part belongs to the 9DB403 series of clock buffers. It is functionally related to other members like the 9DB803DFLFT, which provides eight outputs in an SSOP-48 package. The 'ICS' prefix alias indicates its heritage within the Integrated Circuit Systems product line now managed by Renesas.

Replacement Considerations

The 9DB803DFLFT serves as a higher-channel alternative with eight outputs in an SSOP-48 package. Direct pin-to-pin substitution is not possible due to the different package sizes and pin counts. Evaluate system design changes if upgrading to the 8-output variant.