8521AYI-03LN

Overview

The IDT 8521AYI-03LN is a differential fanout buffer designed for high-speed clock distribution. It accepts multiple input standards including HCSL, LVDS, LVHSTL, LVPECL, and SSTL, translating them to LVHSTL outputs. The device supports a maximum frequency of 500 MHz with a 2:9 input-to-output ratio. It operates on a single 3.3V supply (3.135V to 3.465V) within an industrial temperature range of -40°C to 85°C. Packaged in a 32-LQFP surface-mount case, it provides nine differential outputs for signal integrity applications.

Feature Summary

• Translates various differential inputs (LVPECL, LVDS, HCSL, etc.) to LVHSTL outputs
• Supports maximum operating frequency of 500 MHz
• 2:9 circuit configuration with single supply voltage operation
• Industrial temperature range from -40°C to 85°C

Applications

• High-speed clock distribution networks
• Data communication systems requiring level translation
• Server and storage infrastructure timing solutions

Procurement Notes

Verify the specific ordering suffix '03LN' against manufacturer documentation to confirm package type and tape/reel specifications. Ensure the component meets RoHS compliance requirements if applicable to the target assembly process. Cross-reference the 32-LQFP footprint dimensions during PCB layout finalization.

Selection Notes

Select this component when interfacing between different logic families such as LVPECL or LVDS sources and LVHSTL destinations. Confirm that the 500 MHz frequency limit aligns with system clock requirements. Verify that the 3.3V supply voltage matches the target board power rails and that the -40°C to 85°C range satisfies environmental constraints.

Part Context

This part belongs to the IDT clock buffer family, specifically engineered for fanout and distribution tasks. It addresses the need for driving multiple loads while maintaining signal integrity across different voltage levels. The 32-pin QFP package allows for compact integration into dense electronic designs.

Replacement Considerations

Consult official cross-reference tools for compatible alternatives. Verify pin compatibility and electrical parameters before substituting. Ensure any replacement maintains the 2:9 ratio and LVHSTL output capability.