9DB803DGLFT

Overview

The Renesas 9DB803DGLFT is an eight-output differential clock buffer designed for PCI Express Gen2 applications. It operates within a supply voltage range of 3.135 V to 3.465 V and supports maximum input frequencies up to 400 MHz. The device features zero propagation delay, cycle-cycle jitter under 50 ps, and PCIe Gen2 phase jitter below 3.0/3.1 ps rms. Packaged in a 48-pin SSOP with dimensions of 15.9 x 7.5 x 2.3 mm, it consumes typical power of 578 mW and functions as a zero-delay buffer or fanout driver.

Feature Summary

• Eight differential HCSL outputs supporting PCIe Gen2 clock distribution
• Zero propagation delay with cycle-cycle jitter less than 50 ps
• Supports spread spectrum modulation tolerance (0 to -0.5% down, +/- 0.25% center)
• Operates in PLL mode (50-100 MHz) and bypass mode (50-400 MHz)

Applications

• PCI Express Gen2 clock buffering
• System board clock distribution
• Server and storage backplane timing

Procurement Notes

Verify the suffix DGLF against the source material to confirm package type and temperature range. Confirm RoHS compliance status via official documentation before procurement. Check for moisture sensitivity level requirements during storage and handling.

Selection Notes

Select this component when eight differential outputs are required for PCIe Gen2 systems. Ensure the design accommodates the 48-pin SSOP footprint. Verify that the input clock source matches the HCSL signaling specification and frequency range requirements.

Part Context

This part belongs to the 9DB803 series of clock buffers from Renesas Electronics. It is compatible with the Intel DB800v2 Differential Buffer Specification and is typically driven by main clock generators such as the CK410B+, CK505, or CK509B.

Replacement Considerations

The 9DB803DFLF is a verified alternative within the same family, differing primarily in operating temperature range (-40°C to +85°C versus 0°C to +70°C). Verify pin compatibility and electrical specifications before substitution.