2305M-1LFT

Overview

The Renesas Electronics Corporation 2305M-1LFT is a low phase noise, high-speed PLL-based clock buffer designed for zero delay synchronization. It operates at 3.3 V and provides four low skew outputs with speeds up to 133 MHz. The device features full CMOS outputs with 25 mA drive capability at TTL levels and 5 V tolerant CLKIN inputs. It utilizes an on-chip PLL feedback obtained from the CLKOUT pad, ensuring minimal input-to-output propagation delay. The component supports tri-state mode for board-level testing and is available in an 8-pin SOIC package.

Feature Summary

• Zero delay technology synchronizes clock signals by eliminating input-to-output propagation delay through internal PLL feedback.
• Provides four low skew outputs capable of generating clock signals up to 133 MHz at 3.3 V operating voltage.
• Features full CMOS outputs with 25 mA drive capability at TTL levels and 5 V tolerant CLKIN inputs.

Applications

• Synchronizing clock signals in high-speed digital systems
• Board-level testing requiring tri-state control capabilities
• Distributing low jitter clock signals to multiple downstream components

Procurement Notes

Verify the specific suffix and package type when ordering, as variations exist within the 2305 family. Confirm that the selected variant matches the required temperature range and output drive specifications for your application. Ensure compatibility with existing PCB footprints, particularly regarding the 8-pin SOIC dimensions. Cross-reference official datasheets to validate pinout configurations before integration into new designs.

Selection Notes

Select this component when zero delay synchronization is critical for system timing integrity. It is suitable for applications requiring low skew distribution of clocks up to 133 MHz. Consider the 25 mA drive strength for driving moderate loads directly. Evaluate the 5 V tolerance of the CLKIN input if interfacing with higher voltage logic sources without additional level shifting circuitry.

Part Context

The 2305M-1LFT belongs to the IDT/Renesas 2305 series of zero delay buffers. This family utilizes proprietary low jitter Phase Locked Loop techniques to provide precise clock distribution. The series includes various variants with different output counts and drive strengths, catering to diverse high-speed interface requirements in networking and computing equipment.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify functional equivalence carefully if considering alternative manufacturers, specifically regarding PLL architecture and skew specifications.