8743004DKILFT

Overview

The ICS8743004I is a FemtoClock zero-delay buffer and clock generator designed for PCI Express, Ethernet, Fibre Channel, and XAUI applications. It features four differential output pairs (LVDS or LVPECL) and one M-LVDS I/O pair. The device supports input frequencies from 19.6MHz to 165MHz and generates output frequencies between 98MHz and 165MHz using an internal VCO range of 490MHz to 660MHz. It utilizes external feedback for zero-delay clock regeneration and achieves typical RMS phase jitter of 0.57ps at 125MHz. Operating on a single 3.3V supply, it is housed in a 40-lead VFQFN package.

Feature Summary

• Four differential output pairs with selectable pin type: LVDS or LVPECL
• One M-LVDS I/O pair for backplane applications
• External feedback for zero-delay clock regeneration
• RMS phase jitter of 0.57ps (typical) at 125MHz

Applications

• PCI Express Generation 1 and 2 reference clocks
• Gigabit and 10 Gigabit Ethernet
• Fibre Channel (106.25MHz)
• XAUI (156.25MHz)

Procurement Notes

Verify the specific ordering suffix DKILFT against the manufacturer's current product status. Confirm that the component meets RoHS 6 lead-free requirements and operates within the specified -40°C to 85°C ambient temperature range. Ensure the 40-VFQFN package dimensions match the design constraints.

Selection Notes

Select this component when low phase noise and zero-delay buffering are required for high-speed serial interfaces. Ensure the VCO frequency remains within the 490MHz to 660MHz range by configuring the appropriate dividers. Verify compatibility with the target logic levels (LVDS/LVPECL) and power supply voltage (3.3V).

Part Context

The ICS8743004I belongs to the FemtoClock family of timing devices. It is manufactured by Integrated Device Technology (IDT), which was acquired by Renesas Electronics Corporation. This part is specifically engineered for high-performance clock distribution in data communication and storage systems.

Replacement Considerations

Consult official cross-reference lists for verified substitutes. Generic replacements may not match the specific FemtoClock technology or package dimensions.