ICS9250BF-27

Overview

The ICS9250BF-27 is a clock generator and buffer integrated circuit designed for Intel CPU server applications. It features a single circuit with a 1:27 input-to-output ratio, generating up to 133.3MHz from a crystal input. The device operates within a supply voltage range of 3.135V to 3.465V and supports an operating temperature of 0°C to 70°C. Packaged in a 56-BSSOP surface-mount case, it includes an internal PLL for frequency synthesis without differential signaling.

Feature Summary

• 1:27 Input/Output Ratio
• Internal PLL Frequency Synthesis
• Crystal Input Interface
• Intel CPU Server Application

Applications

• Intel CPU Servers
• System Clock Distribution
• Frequency Generation

Procurement Notes

Verify the specific suffix 'BF-27' against official Renesas documentation to confirm package dimensions and tape/reel specifications. Ensure compatibility with the required 3.135V to 3.465V power supply rails during system design validation.

Selection Notes

Select this component when a high-fanout (1:27) clock distribution solution is required for Intel-based server architectures. Confirm that the 56-SSOP package fits the PCB layout constraints and that the 133.3MHz maximum frequency meets the target bus speed requirements.

Part Context

This part belongs to the Renesas clock timing family, specifically optimized for high-performance computing environments. It serves as a central timing source, converting a single crystal reference into multiple synchronized clock signals for processor and chipset components.

Replacement Considerations

Consult Renesas datasheets for direct pin-compatible replacements or functional equivalents with updated packaging options. Verify that any substitute maintains the 1:27 ratio and 3.3V nominal supply operation.