8T49N287A-998NLGI

Overview

The Renesas 8T49N287A-998NLGI is a FemtoClock NG Octal Universal Frequency Translator (UFT) designed for high-performance clock generation and distribution. It integrates an on-chip EEPROM for configuration storage, eliminating the need for external memory devices. The device supports multiple input formats including LVDS, LVPECL, HCSL, and crystal oscillators, providing eight differential LVPECL outputs. It features low jitter performance suitable for demanding telecommunications applications, specifically complying with GR.1244-CORE Stratum standards.

Feature Summary

• Octal output architecture with eight differential LVPECL clocks
• Integrated non-volatile EEPROM for persistent configuration data
• Supports GR.1244-CORE Stratum timing standards
• Flexible input options: LVDS, LVPECL, HCSL, or Crystal

Applications

• Telecommunications base stations requiring Stratum-level timing
• Synchronous Ethernet (SyncE) network infrastructure
• High-speed data acquisition systems
• Test and measurement equipment

Part Context

This component belongs to the IDT/Renesas FemtoClock NG family of universal frequency translators. The 'A' suffix typically denotes a specific revision or pin-compatible update within the 8T49N287 series. It serves as a drop-in replacement for legacy clock generators in telecom gear, offering enhanced jitter cleaning and flexible frequency synthesis capabilities compared to fixed-frequency alternatives.

Replacement Considerations

Verify pinout compatibility with existing designs when substituting older 8T49N287 variants. Ensure the target application supports LVPECL output levels. Check if the integrated EEPROM programming interface matches the host controller's capabilities, as configuration methods may differ from external SPI flash solutions.