557G-08LFT

Overview

The ICS557G-08LFT is a 2:1 multiplexer chip designed for PCI-Express Gen1 applications. It selects one of two HCSL input pairs and fans out to a single output pair. The device operates with typical power consumption of 132 mW. It is housed in a TSSOP package (PGG16) with 16 leads, measuring 5.0 x 4.4 x 1.0 mm.

Feature Summary

• Selects between two HCSL input clock pairs
• Fans out selected signal to one output pair
• Optimized for PCI-Express Gen1 clock distribution

Applications

• PCI-Express Gen1 clock multiplexing
• System clock selection circuits
• HCSL clock routing infrastructure

Procurement Notes

Verify the exact suffix 'LFT' corresponds to the lead-free TSSOP-16 variant. Confirm the manufacturer designation matches Renesas Electronics America or Renesas Technology Corp as per the specific datasheet revision. Ensure the part number aligns with the ICS557 series family specifications for Gen1 compatibility.

Selection Notes

Choose this component when a 2:1 selection mechanism for HCSL signals is required for PCI-Express Gen1 systems. Consider the TSSOP-16 footprint for board space constraints. Verify that the input signal levels match the HCSL specification before integration into the clock tree design.

Part Context

This part belongs to the ICS557 series of clock multiplexers from Renesas. It is specifically engineered for high-speed serial interface standards, providing reliable clock source switching. The series supports various packaging options to accommodate different thermal and spatial requirements in modern electronic designs.

Replacement Considerations

Check for direct cross-reference parts within the ICS557 family. Verify pinout compatibility if substituting with other 2:1 muxes. Ensure the replacement supports HCSL inputs and PCI-Express Gen1 performance metrics.