CSPT855PGG

Application Specific Clock/Timing Overview

The CSPT855PGG is a zero-delay buffer and clock driver manufactured by Renesas Electronics Corporation, designed primarily for memory and DDR applications. It operates with a single circuit configuration, providing a 1:4 input-to-output ratio. The device supports differential inputs and outputs, ensuring signal integrity in high-speed environments. It functions within a supply voltage range of 2.3V to 2.7V and supports maximum frequencies up to 220MHz. Integrated Phase-Locked Loop (PLL) technology enables precise clock synchronization. The component is housed in a 28-TSSOP surface-mount package and is rated for an operating temperature range of 0°C to 70°C.

Application Specific Clock/Timing Feature Summary

• Zero-delay buffer architecture with integrated PLL for input-to-output synchronization
• 1:4 clock distribution ratio supporting differential input and output signals
• Maximum operating frequency of 220MHz suitable for DDR memory interfaces
• Operates on a 2.3V to 2.7V supply voltage with 0°C to 70°C commercial temperature range

Application Specific Clock/Timing Applications

• DDR memory clock distribution systems
• High-performance memory controller interfaces
• Server and workstation motherboard clocking solutions

Application Specific Clock/Timing Procurement Notes

Verify the specific ordering suffix 'GG' against the manufacturer's current documentation to confirm package dimensions and tape-and-reel specifications. Confirm RoHS compliance status and lead-free material declarations as required by local regulations. Check for any product change notices or end-of-life announcements that may affect long-term availability and supply chain stability.

Application Specific Clock/Timing Selection Notes

Select this component when a low-skew, zero-delay clock buffer is required for DDR memory architectures. Ensure the system design accommodates the 2.3V to 2.7V supply voltage constraint. Verify that the 28-TSSOP package footprint matches the PCB layout requirements. Consider thermal management capabilities within the 0°C to 70°C operating range for the intended application environment.

Application Specific Clock/Timing Part Context

This part belongs to the CSPT855 series of clock buffers from Renesas Electronics. It is specifically engineered for memory interface applications requiring precise timing alignment. The device integrates PLL functionality to eliminate propagation delay between input and output clocks, making it suitable for high-speed data transmission systems where timing skew must be minimized.

Application Specific Clock/Timing Replacement Considerations

Consult official Renesas cross-reference guides for verified alternative part numbers. Ensure any substitute maintains the same 1:4 ratio, differential I/O capability, and 220MHz frequency limit. Verify pin compatibility and electrical parameters before implementation.