8543AG-09LF

Overview

The Renesas 8543AG-09LF is a clock buffer and multiplexer IC designed for high-frequency signal distribution. It features a 2:4 input-to-output ratio with a maximum operating frequency of 800 MHz. The device supports multiple differential input and output standards, including LVDS, CML, HCSL, LVHSTL, LVPECL, and SSTL. It operates on a single 3.135V to 3.465V supply voltage and is housed in a 20-TSSOP package (0.173", 4.40mm width). The component is specified for commercial temperature ranges from 0°C to 70°C.

Feature Summary

• Supports 2:4 fan-out buffering and multiplexing functions
• Maximum frequency performance up to 800 MHz
• Compatible with LVDS, CML, HCSL, LVHSTL, LVPECL, and SSTL I/O standards
• Available in a 20-TSSOP surface-mount package

Applications

• High-speed data communication systems requiring clock distribution
• Telecommunications infrastructure equipment
• Server and storage system clock networks

Procurement Notes

The 8543AG-09LF is listed as an obsolete or discontinued product by the manufacturer. Verification of current availability should be conducted through authorized distributors or secondary market suppliers. Designers should consider end-of-life management strategies and plan for potential long-term supply constraints when integrating this component into production cycles.

Selection Notes

Select this component when a 2:4 clock distribution solution supporting mixed differential signaling standards is required. Ensure the design environment accommodates the 3.135V to 3.465V supply range. Verify that the 0°C to 70°C operating temperature range meets the application's thermal requirements. Confirm compatibility with the target PCB layout for the 20-TSSOP package.

Part Context

This part belongs to the Renesas 8543 series of clock buffers and multiplexers. It serves as a specialized timing solution for distributing reference clocks across multiple loads in high-speed digital systems. The series typically offers flexibility in input/output standard selection to interface with various logic families within a single system architecture.

Replacement Considerations

Due to the discontinued status, direct replacements may not be available. Evaluate newer Renesas clock buffer families with similar 2:4 ratios and 800MHz capabilities. Cross-reference pinouts and electrical specifications carefully to ensure functional equivalence in existing designs.