97ULP845AHILFT

Application Specific Clock/Timing Overview

The 97ULP845AHILFT is a zero-delay buffer, multiplexer, and clock driver manufactured by Renesas Electronics Corporation. Designed primarily for DDR2 memory applications, this integrated circuit operates with a maximum frequency of 410MHz. It features a single input to five output configuration (1:5 ratio) with differential input and output capabilities. The device is supplied in a 28-CABGA package measuring 4.0x4.5mm and requires a supply voltage between 1.7V and 1.9V. It supports SSTL-18 output standards and functions within an operating temperature range of 0°C to 70°C.

Application Specific Clock/Timing Feature Summary

• Zero-delay buffering and multiplexing functionality for DDR2 memory systems
• 1:5 input-to-output ratio with differential signaling on both input and output
• Maximum operating frequency of 410MHz
• Integrated PLL for clock generation and distribution

Application Specific Clock/Timing Applications

• DDR2 memory clock distribution networks
• High-speed digital system timing synchronization
• Server and workstation motherboard clock architectures

Application Specific Clock/Timing Procurement Notes

The 97ULP845AHILFT is listed as obsolete or end-of-life. Verification of current availability through authorized distributors is required. Alternative components from the same family or newer generations should be evaluated for compatibility. Supply chain stability cannot be guaranteed for discontinued parts.

Application Specific Clock/Timing Selection Notes

Select this component when designing DDR2 memory interfaces requiring low-skew clock distribution. Ensure the design accommodates the 1.7V to 1.9V supply voltage and the 28-VFBGA package constraints. Verify that the 410MHz maximum frequency meets the system's timing requirements. Consider thermal management within the 0°C to 70°C commercial temperature range.

Application Specific Clock/Timing Part Context

This part belongs to the 97U2A845 series of clock buffers and drivers. It shares functional similarities with other members of the family but is specifically optimized for DDR2 memory applications. The suffix 'HLFT' indicates specific packaging and lead-free compliance characteristics defined by Renesas.

Application Specific Clock/Timing Replacement Considerations

Due to the obsolete status, direct substitutes may not be available. Evaluate newer Renesas clock buffer families or generic high-speed differential clock drivers that match the 1:5 ratio, 410MHz speed, and CABGA package footprint. Pin-to-pin compatibility must be verified against alternative datasheets.