874003DG-02LF

Overview

The Renesas 874003DG-02LF is a PCI Express jitter attenuator IC from the FemtoClock series, designed to reduce high-frequency random and deterministic jitter in PCIe systems. It features a single differential clock input supporting LVPECL, LVDS, LVHSTL, SSTL, or HCSL standards, and provides three differential LVDS output pairs. The device operates with a supply voltage of 3.135V to 3.465V and supports an output frequency range of 98MHz to 320MHz. It utilizes a 3MHz PLL loop bandwidth for effective jitter attenuation while tracking spread-spectrum profiles.

Feature Summary

• Three differential LVDS output pairs derived from one differential clock input
• Supports multiple input types: LVPECL, LVDS, LVHSTL, SSTL, HCSL
• Output frequency range of 98MHz to 320MHz with VCO range of 490MHz to 640MHz
• Cycle-to-cycle jitter specification of 30ps maximum

Applications

• PCI Express add-in cards
• Desktop PC motherboard clock distribution
• Systems requiring jitter attenuation from low-bandwidth PLL synthesizers

Procurement Notes

The part number 874003DG-02LF is listed as obsolete by the manufacturer. Verification of availability should focus on the specific suffix variants such as 874003DGI-02LF (Tube) or 874003DGI-02LFT (Reel), which are also marked as obsolete. Last-time buy status may apply; consult official Renesas documentation for final disposition details.

Selection Notes

Select this component when designing for PCI Express applications requiring jitter reduction from noisy source clocks. Ensure the design accommodates the 20-TSSOP package dimensions and the 3.3V nominal supply voltage. Verify that the required output frequency falls within the 98MHz to 320MHz range and that the input signal matches one of the supported logic families.

Part Context

This device belongs to the FemtoClock family of high-performance clock generators and jitter attenuators. It is specifically engineered for space-constrained applications like PCIe add-in cards, utilizing third-generation FemtoClock PLL technology to achieve low phase noise. The part is functionally related to the 874003DI-02 series.

Replacement Considerations

Publicly documented substitutes include the 874003I-02, which is also identified as a PCI Express Jitter Attenuator. Both parts share similar functional roles but require verification of pin compatibility and electrical specifications against the original design requirements.