557G-08LF

Overview

The Renesas Electronics Corporation 557G-08LF is a low skew clock driver designed for PCI Express applications. It operates as a 2:1 multiplexer chip supporting PCI-Express Gen1 standards. The device features a single output channel with a maximum frequency of 200 MHz and accepts an input frequency up to 25 MHz. It functions on a 3.3 V supply voltage and is housed in a 16-pin TSSOP package with gull wing terminals. The component is currently classified as obsolete.

Feature Summary

• Provides low skew clock driving capabilities specifically engineered for high-speed digital interfaces.
• Functions as a 2:1 multiplexer to select between two input sources for signal routing.

Applications

• PCI Express (PCIe) clock generation systems
• High-speed data transmission interface circuits

Procurement Notes

This component is officially listed as obsolete by the manufacturer. Availability is restricted to surplus or secondary market channels. Verify authenticity and physical condition carefully when sourcing from non-primary distributors, as standard factory support may be limited. Confirm pin compatibility and package integrity prior to integration into new designs.

Selection Notes

Engineers should consider this part only for maintenance or legacy system upgrades where the specific 2:1 mux configuration is required. New designs must evaluate current replacement options within the same family that offer active production status. Ensure the 3.3 V logic level and TSSOP-16 footprint match the target board layout constraints before proceeding.

Part Context

The 557G series belongs to Renesas' portfolio of clock generators and support products tailored for peripheral interconnects. This specific model addresses the timing requirements for PCIe Gen1 links. It is distinct from other variants like the 557G-06LFT which utilizes a different pin count and output configuration.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation due to the obsolete status of this specific item.